December 2018 - LKP - Ml01.01.Org

Re: [LKP] [rcu] kernel BUG at include/linux/pagemap.h:149!

by Frederic Weisbecker

On Fri, Sep 11, 2015 at 10:19:47AM +0800, Boqun Feng wrote: > Subject: [PATCH 01/27] rcu: Don't disable preemption for Tiny and Tree RCU > readers > > Because preempt_disable() maps to barrier() for non-debug builds, > it forces the compiler to spill and reload registers. Because Tree > RCU and Tiny RCU now only appear in CONFIG_PREEMPT=n builds, these > barrier() instances generate needless extra code for each instance of > rcu_read_lock() and rcu_read_unlock(). This extra code slows down Tree > RCU and bloats Tiny RCU. > > This commit therefore removes the preempt_disable() and preempt_enable() > from the non-preemptible implementations of __rcu_read_lock() and > __rcu_read_unlock(), respectively. > > For debug purposes, preempt_disable() and preempt_enable() are still > kept if CONFIG_PREEMPT_COUNT=y, which makes the detection of sleeping > inside atomic sections still work in non-preemptible kernels. > > Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com> > Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> > --- > include/linux/rcupdate.h | 6 ++++-- > include/linux/rcutiny.h | 1 + > kernel/rcu/tree.c | 9 +++++++++ > 3 files changed, 14 insertions(+), 2 deletions(-) > > diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h > index d63bb77..6c3cece 100644 > --- a/include/linux/rcupdate.h > +++ b/include/linux/rcupdate.h > @@ -297,12 +297,14 @@ void synchronize_rcu(void); > > static inline void __rcu_read_lock(void) > { > - preempt_disable(); > + if (IS_ENABLED(CONFIG_PREEMPT_COUNT)) > + preempt_disable(); preempt_disable() is a no-op when !CONFIG_PREEMPT_COUNT, right? Or rather it's a barrier(), which is anyway implied by rcu_read_lock(). So perhaps we can get rid of the IS_ENABLED() check?

1 year, 3 months

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[mm] ac5b2c1891: vm-scalability.throughput -61.3% regression

by kernel test robot

Greeting, FYI, we noticed a -61.3% regression of vm-scalability.throughput due to commit: commit: ac5b2c18911ffe95c08d69273917f90212cf5659 ("mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: vm-scalability on test machine: 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory with following parameters: runtime: 300 thp_enabled: always thp_defrag: always nr_task: 32 nr_ssd: 1 test: swap-w-seq ucode: 0x3d cpufreq_governor: performance test-description: The motivation behind this suite is to exercise functions and regions of the mm/ of the Linux kernel which are of interest to us. test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/nr_ssd/nr_task/rootfs/runtime/tbox_group/test/testcase/thp_defrag/thp_enabled/ucode: gcc-7/performance/x86_64-rhel-7.2/1/32/debian-x86_64-2018-04-03.cgz/300/lkp-hsw-ep4/swap-w-seq/vm-scalability/always/always/0x3d commit: 94e297c50b ("include/linux/notifier.h: SRCU: fix ctags") ac5b2c1891 ("mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings") 94e297c50b529f5d ac5b2c18911ffe95c08d692739 ---------------- -------------------------- %stddev %change %stddev \ | \ 0.57 ± 35% +258.8% 2.05 ± 4% vm-scalability.free_time 146022 ± 14% -40.5% 86833 ± 2% vm-scalability.median 29.29 ± 40% -89.6% 3.06 ± 26% vm-scalability.stddev 7454656 ± 9% -61.3% 2885836 ± 3% vm-scalability.throughput 189.21 ± 10% +52.4% 288.34 ± 2% vm-scalability.time.elapsed_time 189.21 ± 10% +52.4% 288.34 ± 2% vm-scalability.time.elapsed_time.max 8768 ± 3% +11.6% 9781 ± 5% vm-scalability.time.involuntary_context_switches 20320196 ± 2% -33.4% 13531732 ± 3% vm-scalability.time.maximum_resident_set_size 425945 ± 9% +17.4% 499908 ± 4% vm-scalability.time.minor_page_faults 253.79 ± 6% +62.0% 411.07 ± 4% vm-scalability.time.system_time 322.52 +8.0% 348.18 vm-scalability.time.user_time 246150 ± 12% +50.3% 370019 ± 4% vm-scalability.time.voluntary_context_switches 7746519 ± 11% +49.0% 11538799 ± 4% cpuidle.C6.usage 192240 ± 10% +44.3% 277460 ± 8% interrupts.CAL:Function_call_interrupts 22.45 ± 85% -80.6% 4.36 ±173% sched_debug.cfs_rq:/.MIN_vruntime.avg 22.45 ± 85% -80.6% 4.36 ±173% sched_debug.cfs_rq:/.max_vruntime.avg 29.36 ± 13% +10.8% 32.52 ± 14% boot-time.boot 24.28 ± 16% +12.4% 27.30 ± 16% boot-time.dhcp 1597 ± 15% +10.2% 1760 ± 15% boot-time.idle 68.25 -9.8 58.48 ± 2% mpstat.cpu.idle% 27.12 ± 5% +10.3 37.42 ± 3% mpstat.cpu.iowait% 2.48 ± 11% -0.8 1.73 ± 2% mpstat.cpu.usr% 3422396 ± 14% +46.6% 5018492 ± 7% softirqs.RCU 1776561 ± 10% +52.4% 2707785 ± 2% softirqs.SCHED 5685772 ± 7% +54.3% 8774055 ± 3% softirqs.TIMER 7742519 ± 11% +49.0% 11534924 ± 4% turbostat.C6 29922317 ± 10% +55.0% 46366941 turbostat.IRQ 9.49 ± 64% -83.0% 1.62 ± 54% turbostat.Pkg%pc2 36878790 ± 27% -84.9% 5570259 ± 47% vmstat.memory.free 1.117e+08 ± 15% +73.5% 1.939e+08 ± 10% vmstat.memory.swpd 25.25 ± 4% +34.7% 34.00 vmstat.procs.b 513725 ± 7% +47.9% 759561 ± 12% numa-numastat.node0.local_node 35753 ±160% +264.7% 130386 ± 39% numa-numastat.node0.numa_foreign 519403 ± 6% +48.7% 772182 ± 12% numa-numastat.node0.numa_hit 35753 ±160% +264.7% 130386 ± 39% numa-numastat.node1.numa_miss 44315 ±138% +198.5% 132279 ± 40% numa-numastat.node1.other_node 32798032 ± 46% +80.6% 59228165 ± 2% numa-meminfo.node0.Active 32798009 ± 46% +80.6% 59228160 ± 2% numa-meminfo.node0.Active(anon) 33430762 ± 46% +80.8% 60429537 ± 2% numa-meminfo.node0.AnonHugePages 33572119 ± 46% +80.2% 60512777 ± 2% numa-meminfo.node0.AnonPages 1310559 ± 64% +86.4% 2442244 ± 2% numa-meminfo.node0.Inactive 1309969 ± 64% +86.4% 2442208 ± 2% numa-meminfo.node0.Inactive(anon) 30385359 ± 53% -90.7% 2821023 ± 44% numa-meminfo.node0.MemFree 35505047 ± 45% +77.6% 63055165 ± 2% numa-meminfo.node0.MemUsed 166560 ± 42% +130.2% 383345 ± 6% numa-meminfo.node0.PageTables 23702 ±105% -89.0% 2617 ± 44% numa-meminfo.node0.Shmem 1212 ± 65% +402.8% 6093 ± 57% numa-meminfo.node1.Shmem 8354144 ± 44% +77.1% 14798964 ± 2% numa-vmstat.node0.nr_active_anon 8552787 ± 44% +76.8% 15122222 ± 2% numa-vmstat.node0.nr_anon_pages 16648 ± 44% +77.1% 29492 ± 2% numa-vmstat.node0.nr_anon_transparent_hugepages 7436650 ± 53% -90.4% 712936 ± 44% numa-vmstat.node0.nr_free_pages 332106 ± 63% +83.8% 610268 ± 2% numa-vmstat.node0.nr_inactive_anon 41929 ± 41% +130.6% 96703 ± 6% numa-vmstat.node0.nr_page_table_pages 5900 ±106% -89.0% 650.75 ± 45% numa-vmstat.node0.nr_shmem 43336 ± 92% +151.2% 108840 ± 7% numa-vmstat.node0.nr_vmscan_write 43110 ± 92% +150.8% 108110 ± 7% numa-vmstat.node0.nr_written 8354142 ± 44% +77.1% 14798956 ± 2% numa-vmstat.node0.nr_zone_active_anon 332105 ± 63% +83.8% 610269 ± 2% numa-vmstat.node0.nr_zone_inactive_anon 321.50 ± 66% +384.9% 1559 ± 59% numa-vmstat.node1.nr_shmem 88815743 ± 10% +33.8% 1.188e+08 ± 2% meminfo.Active 88815702 ± 10% +33.8% 1.188e+08 ± 2% meminfo.Active(anon) 90446011 ± 11% +34.0% 1.212e+08 ± 2% meminfo.AnonHugePages 90613587 ± 11% +34.0% 1.214e+08 ± 2% meminfo.AnonPages 5.15e+08 ± 3% +22.2% 6.293e+08 ± 2% meminfo.Committed_AS 187419 ± 10% -19.6% 150730 ± 7% meminfo.DirectMap4k 3620693 ± 18% +35.3% 4897093 ± 2% meminfo.Inactive 3620054 ± 18% +35.3% 4896961 ± 2% meminfo.Inactive(anon) 36144979 ± 28% -87.0% 4715681 ± 57% meminfo.MemAvailable 36723121 ± 27% -85.9% 5179468 ± 52% meminfo.MemFree 395801 ± 2% +56.9% 620816 ± 4% meminfo.PageTables 178672 +15.1% 205668 ± 2% meminfo.SUnreclaim 249496 +12.6% 280897 meminfo.Slab 1751813 ± 2% +34.7% 2360437 ± 3% meminfo.SwapCached 6.716e+08 -12.4% 5.88e+08 ± 2% meminfo.SwapFree 3926 ± 17% +72.9% 6788 ± 13% meminfo.Writeback 1076 ± 3% +42.9% 1538 ± 4% slabinfo.biovec-max.active_objs 275.75 ± 2% +41.1% 389.00 ± 4% slabinfo.biovec-max.active_slabs 1104 ± 2% +41.0% 1557 ± 4% slabinfo.biovec-max.num_objs 275.75 ± 2% +41.1% 389.00 ± 4% slabinfo.biovec-max.num_slabs 588.25 ± 7% +17.9% 693.75 ± 7% slabinfo.file_lock_cache.active_objs 588.25 ± 7% +17.9% 693.75 ± 7% slabinfo.file_lock_cache.num_objs 13852 ± 3% +37.5% 19050 ± 3% slabinfo.kmalloc-4k.active_objs 1776 ± 3% +37.7% 2446 ± 3% slabinfo.kmalloc-4k.active_slabs 14217 ± 3% +37.7% 19577 ± 3% slabinfo.kmalloc-4k.num_objs 1776 ± 3% +37.7% 2446 ± 3% slabinfo.kmalloc-4k.num_slabs 158.25 ± 15% +54.0% 243.75 ± 18% slabinfo.nfs_read_data.active_objs 158.25 ± 15% +54.0% 243.75 ± 18% slabinfo.nfs_read_data.num_objs 17762 ± 4% +44.3% 25638 ± 4% slabinfo.pool_workqueue.active_objs 563.25 ± 3% +43.7% 809.25 ± 4% slabinfo.pool_workqueue.active_slabs 18048 ± 3% +43.5% 25906 ± 4% slabinfo.pool_workqueue.num_objs 563.25 ± 3% +43.7% 809.25 ± 4% slabinfo.pool_workqueue.num_slabs 34631 ± 3% +21.0% 41905 ± 2% slabinfo.radix_tree_node.active_objs 624.50 ± 3% +20.7% 753.75 ± 2% slabinfo.radix_tree_node.active_slabs 34998 ± 3% +20.7% 42228 ± 2% slabinfo.radix_tree_node.num_objs 624.50 ± 3% +20.7% 753.75 ± 2% slabinfo.radix_tree_node.num_slabs 9.727e+11 ± 8% +50.4% 1.463e+12 ± 12% perf-stat.branch-instructions 1.11 ± 12% +1.2 2.31 ± 8% perf-stat.branch-miss-rate% 1.078e+10 ± 13% +214.9% 3.395e+10 ± 17% perf-stat.branch-misses 3.17 ± 11% -1.5 1.65 ± 9% perf-stat.cache-miss-rate% 8.206e+08 ± 7% +49.4% 1.226e+09 ± 11% perf-stat.cache-misses 2.624e+10 ± 14% +187.0% 7.532e+10 ± 17% perf-stat.cache-references 1174249 ± 9% +52.3% 1788442 ± 3% perf-stat.context-switches 2.921e+12 ± 8% +71.1% 4.998e+12 ± 9% perf-stat.cpu-cycles 1437 ± 14% +85.1% 2661 ± 20% perf-stat.cpu-migrations 7.586e+08 ± 21% +134.7% 1.78e+09 ± 30% perf-stat.dTLB-load-misses 7.943e+11 ± 11% +84.3% 1.464e+12 ± 14% perf-stat.dTLB-loads 93963731 ± 22% +40.9% 1.324e+08 ± 10% perf-stat.dTLB-store-misses 3.394e+11 ± 6% +60.5% 5.449e+11 ± 10% perf-stat.dTLB-stores 1.531e+08 ± 22% +44.0% 2.204e+08 ± 11% perf-stat.iTLB-load-misses 1.688e+08 ± 23% +71.1% 2.888e+08 ± 12% perf-stat.iTLB-loads 3.267e+12 ± 7% +58.5% 5.177e+12 ± 13% perf-stat.instructions 3988 ± 43% +123.9% 8930 ± 22% perf-stat.major-faults 901474 ± 5% +34.2% 1209877 ± 2% perf-stat.minor-faults 31.24 ± 10% +21.7 52.91 ± 2% perf-stat.node-load-miss-rate% 1.135e+08 ± 16% +187.6% 3.264e+08 ± 13% perf-stat.node-load-misses 6.27 ± 17% +26.9 33.19 ± 4% perf-stat.node-store-miss-rate% 27354489 ± 15% +601.2% 1.918e+08 ± 13% perf-stat.node-store-misses 905482 ± 5% +34.6% 1218833 ± 2% perf-stat.page-faults 4254 ± 7% +58.5% 6741 ± 13% perf-stat.path-length 6364 ± 25% +84.1% 11715 ± 14% proc-vmstat.allocstall_movable 46439 ± 12% +100.4% 93049 ± 21% proc-vmstat.compact_migrate_scanned 22425696 ± 10% +29.0% 28932634 ± 6% proc-vmstat.nr_active_anon 22875703 ± 11% +29.2% 29560082 ± 6% proc-vmstat.nr_anon_pages 44620 ± 11% +29.2% 57643 ± 6% proc-vmstat.nr_anon_transparent_hugepages 879436 ± 28% -77.3% 199768 ± 98% proc-vmstat.nr_dirty_background_threshold 1761029 ± 28% -77.3% 400034 ± 98% proc-vmstat.nr_dirty_threshold 715724 +17.6% 841386 ± 3% proc-vmstat.nr_file_pages 8960545 ± 28% -76.4% 2111248 ± 93% proc-vmstat.nr_free_pages 904330 ± 18% +31.2% 1186458 ± 7% proc-vmstat.nr_inactive_anon 11137 ± 2% +27.1% 14154 ± 9% proc-vmstat.nr_isolated_anon 12566 +3.5% 13012 proc-vmstat.nr_kernel_stack 97491 ± 2% +52.6% 148790 ± 10% proc-vmstat.nr_page_table_pages 17674 +6.2% 18763 ± 2% proc-vmstat.nr_slab_reclaimable 44820 +13.0% 50645 ± 2% proc-vmstat.nr_slab_unreclaimable 135763 ± 9% +68.4% 228600 ± 6% proc-vmstat.nr_vmscan_write 1017 ± 10% +54.7% 1573 ± 14% proc-vmstat.nr_writeback 220023 ± 5% +73.5% 381732 ± 6% proc-vmstat.nr_written 22425696 ± 10% +29.0% 28932635 ± 6% proc-vmstat.nr_zone_active_anon 904330 ± 18% +31.2% 1186457 ± 7% proc-vmstat.nr_zone_inactive_anon 1018 ± 10% +55.3% 1581 ± 13% proc-vmstat.nr_zone_write_pending 145368 ± 48% +63.1% 237050 ± 17% proc-vmstat.numa_foreign 671.50 ± 96% +479.4% 3890 ± 71% proc-vmstat.numa_hint_faults 1122389 ± 9% +17.2% 1315380 ± 4% proc-vmstat.numa_hit 214722 ± 5% +21.6% 261076 ± 3% proc-vmstat.numa_huge_pte_updates 1108142 ± 9% +17.4% 1300857 ± 4% proc-vmstat.numa_local 145368 ± 48% +63.1% 237050 ± 17% proc-vmstat.numa_miss 159615 ± 44% +57.6% 251573 ± 16% proc-vmstat.numa_other 185.50 ± 81% +8278.6% 15542 ± 40% proc-vmstat.numa_pages_migrated 1.1e+08 ± 5% +21.6% 1.337e+08 ± 3% proc-vmstat.numa_pte_updates 688332 ±106% +177.9% 1913062 ± 3% proc-vmstat.pgalloc_dma32 72593045 ± 10% +51.1% 1.097e+08 ± 3% proc-vmstat.pgdeactivate 919059 ± 4% +35.1% 1241472 ± 2% proc-vmstat.pgfault 3716 ± 45% +120.3% 8186 ± 25% proc-vmstat.pgmajfault 7.25 ± 26% +4.2e+05% 30239 ± 25% proc-vmstat.pgmigrate_fail 5340 ±106% +264.0% 19438 ± 33% proc-vmstat.pgmigrate_success 2.837e+08 ± 10% +51.7% 4.303e+08 ± 3% proc-vmstat.pgpgout 211428 ± 6% +74.1% 368188 ± 4% proc-vmstat.pgrefill 219051 ± 5% +73.7% 380419 ± 5% proc-vmstat.pgrotated 559397 ± 8% +43.0% 800110 ± 11% proc-vmstat.pgscan_direct 32894 ± 59% +158.3% 84981 ± 23% proc-vmstat.pgscan_kswapd 207042 ± 8% +71.5% 355174 ± 5% proc-vmstat.pgsteal_direct 14745 ± 65% +104.3% 30121 ± 18% proc-vmstat.pgsteal_kswapd 70934968 ± 10% +51.7% 1.076e+08 ± 3% proc-vmstat.pswpout 5852284 ± 12% +145.8% 14382881 ± 5% proc-vmstat.slabs_scanned 13453 ± 24% +204.9% 41023 ± 8% proc-vmstat.thp_split_page_failed 138385 ± 10% +51.6% 209783 ± 3% proc-vmstat.thp_split_pmd 138385 ± 10% +51.6% 209782 ± 3% proc-vmstat.thp_swpout 4.61 ± 24% -1.2 3.37 ± 10% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state.do_idle 2.90 ± 18% -0.7 2.19 ± 8% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state 1.86 ± 32% -0.6 1.22 ± 7% perf-profile.calltrace.cycles-pp.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt 1.60 ± 31% -0.5 1.08 ± 10% perf-profile.calltrace.cycles-pp.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.smp_apic_timer_interrupt 2.98 ± 8% -0.5 2.48 ± 10% perf-profile.calltrace.cycles-pp.menu_select.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 1.46 ± 32% -0.5 0.96 ± 9% perf-profile.calltrace.cycles-pp.update_process_times.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt 0.74 ± 27% -0.5 0.28 ±100% perf-profile.calltrace.cycles-pp.scheduler_tick.update_process_times.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues 1.03 ± 52% -0.4 0.63 ± 15% perf-profile.calltrace.cycles-pp.clockevents_program_event.hrtimer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state 1.17 ± 19% -0.3 0.87 ± 11% perf-profile.calltrace.cycles-pp.tick_nohz_next_event.tick_nohz_get_sleep_length.menu_select.do_idle.cpu_startup_entry 0.80 ± 17% +0.4 1.22 ± 7% perf-profile.calltrace.cycles-pp.nvme_queue_rq.__blk_mq_try_issue_directly.blk_mq_try_issue_directly.blk_mq_make_request.generic_make_request 0.81 ± 16% +0.4 1.23 ± 8% perf-profile.calltrace.cycles-pp.blk_mq_try_issue_directly.blk_mq_make_request.generic_make_request.submit_bio.__swap_writepage 0.81 ± 16% +0.4 1.23 ± 8% perf-profile.calltrace.cycles-pp.__blk_mq_try_issue_directly.blk_mq_try_issue_directly.blk_mq_make_request.generic_make_request.submit_bio 0.52 ± 60% +0.5 1.03 ± 6% perf-profile.calltrace.cycles-pp.dma_pool_alloc.nvme_queue_rq.__blk_mq_try_issue_directly.blk_mq_try_issue_directly.blk_mq_make_request 1.64 ± 16% +0.6 2.21 ± 15% perf-profile.calltrace.cycles-pp.find_next_bit.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_done 0.51 ± 64% +0.8 1.31 ± 17% perf-profile.calltrace.cycles-pp.bt_iter.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_start 0.80 ± 25% +0.9 1.67 ± 19% perf-profile.calltrace.cycles-pp.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_start.blk_mq_make_request 0.82 ± 24% +0.9 1.71 ± 19% perf-profile.calltrace.cycles-pp.blk_mq_in_flight.part_round_stats.blk_account_io_start.blk_mq_make_request.generic_make_request 0.82 ± 25% +0.9 1.73 ± 19% perf-profile.calltrace.cycles-pp.part_round_stats.blk_account_io_start.blk_mq_make_request.generic_make_request.submit_bio 0.87 ± 25% +1.0 1.87 ± 14% perf-profile.calltrace.cycles-pp.blk_account_io_start.blk_mq_make_request.generic_make_request.submit_bio.__swap_writepage 2.05 ± 15% +1.4 3.48 ± 7% perf-profile.calltrace.cycles-pp.generic_make_request.submit_bio.__swap_writepage.pageout.shrink_page_list 2.09 ± 15% +1.4 3.53 ± 7% perf-profile.calltrace.cycles-pp.__swap_writepage.pageout.shrink_page_list.shrink_inactive_list.shrink_node_memcg 2.05 ± 15% +1.4 3.49 ± 7% perf-profile.calltrace.cycles-pp.blk_mq_make_request.generic_make_request.submit_bio.__swap_writepage.pageout 2.06 ± 15% +1.4 3.50 ± 7% perf-profile.calltrace.cycles-pp.submit_bio.__swap_writepage.pageout.shrink_page_list.shrink_inactive_list 2.10 ± 15% +1.4 3.54 ± 6% perf-profile.calltrace.cycles-pp.pageout.shrink_page_list.shrink_inactive_list.shrink_node_memcg.shrink_node 3.31 ± 12% +1.5 4.83 ± 5% perf-profile.calltrace.cycles-pp.shrink_page_list.shrink_inactive_list.shrink_node_memcg.shrink_node.do_try_to_free_pages 3.33 ± 12% +1.5 4.86 ± 5% perf-profile.calltrace.cycles-pp.shrink_inactive_list.shrink_node_memcg.shrink_node.do_try_to_free_pages.try_to_free_pages 3.40 ± 12% +1.6 4.97 ± 6% perf-profile.calltrace.cycles-pp.shrink_node_memcg.shrink_node.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath 3.57 ± 12% +1.6 5.19 ± 7% perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault.__do_page_fault 3.48 ± 12% +1.6 5.13 ± 6% perf-profile.calltrace.cycles-pp.shrink_node.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask 3.48 ± 12% +1.6 5.13 ± 6% perf-profile.calltrace.cycles-pp.do_try_to_free_pages.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask.do_huge_pmd_anonymous_page 3.49 ± 12% +1.6 5.13 ± 6% perf-profile.calltrace.cycles-pp.try_to_free_pages.__alloc_pages_slowpath.__alloc_pages_nodemask.do_huge_pmd_anonymous_page.__handle_mm_fault 3.51 ± 12% +1.7 5.17 ± 6% perf-profile.calltrace.cycles-pp.__alloc_pages_slowpath.__alloc_pages_nodemask.do_huge_pmd_anonymous_page.__handle_mm_fault.handle_mm_fault 3.34 ± 14% +2.2 5.57 ± 21% perf-profile.calltrace.cycles-pp.blk_mq_check_inflight.bt_iter.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats 9.14 ± 17% +5.5 14.66 ± 22% perf-profile.calltrace.cycles-pp.bt_iter.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_done 12.10 ± 17% +6.8 18.89 ± 20% perf-profile.calltrace.cycles-pp.blk_mq_queue_tag_busy_iter.blk_mq_in_flight.part_round_stats.blk_account_io_done.blk_mq_end_request 13.88 ± 15% +7.1 21.01 ± 20% perf-profile.calltrace.cycles-pp.handle_irq.do_IRQ.ret_from_intr.cpuidle_enter_state.do_idle 13.87 ± 15% +7.1 21.00 ± 20% perf-profile.calltrace.cycles-pp.handle_edge_irq.handle_irq.do_IRQ.ret_from_intr.cpuidle_enter_state 13.97 ± 15% +7.1 21.10 ± 20% perf-profile.calltrace.cycles-pp.ret_from_intr.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 13.94 ± 15% +7.1 21.07 ± 20% perf-profile.calltrace.cycles-pp.do_IRQ.ret_from_intr.cpuidle_enter_state.do_idle.cpu_startup_entry 12.50 ± 17% +7.2 19.65 ± 20% perf-profile.calltrace.cycles-pp.blk_account_io_done.blk_mq_end_request.blk_mq_complete_request.nvme_irq.__handle_irq_event_percpu 12.70 ± 17% +7.2 19.86 ± 21% perf-profile.calltrace.cycles-pp.blk_mq_end_request.blk_mq_complete_request.nvme_irq.__handle_irq_event_percpu.handle_irq_event_percpu 12.48 ± 17% +7.2 19.65 ± 20% perf-profile.calltrace.cycles-pp.part_round_stats.blk_account_io_done.blk_mq_end_request.blk_mq_complete_request.nvme_irq 12.46 ± 17% +7.2 19.63 ± 21% perf-profile.calltrace.cycles-pp.blk_mq_in_flight.part_round_stats.blk_account_io_done.blk_mq_end_request.blk_mq_complete_request 14.78 ± 18% +8.1 22.83 ± 20% perf-profile.calltrace.cycles-pp.blk_mq_complete_request.nvme_irq.__handle_irq_event_percpu.handle_irq_event_percpu.handle_irq_event 14.87 ± 18% +8.1 22.95 ± 21% perf-profile.calltrace.cycles-pp.nvme_irq.__handle_irq_event_percpu.handle_irq_event_percpu.handle_irq_event.handle_edge_irq 14.89 ± 18% +8.1 22.98 ± 21% perf-profile.calltrace.cycles-pp.handle_irq_event_percpu.handle_irq_event.handle_edge_irq.handle_irq.do_IRQ 14.90 ± 18% +8.1 22.99 ± 21% perf-profile.calltrace.cycles-pp.handle_irq_event.handle_edge_irq.handle_irq.do_IRQ.ret_from_intr 14.88 ± 18% +8.1 22.97 ± 21% perf-profile.calltrace.cycles-pp.__handle_irq_event_percpu.handle_irq_event_percpu.handle_irq_event.handle_edge_irq.handle_irq 4.79 ± 22% -1.3 3.52 ± 9% perf-profile.children.cycles-pp.hrtimer_interrupt 3.04 ± 16% -0.7 2.30 ± 8% perf-profile.children.cycles-pp.__hrtimer_run_queues 1.98 ± 29% -0.7 1.29 ± 7% perf-profile.children.cycles-pp.tick_sched_timer 1.70 ± 27% -0.6 1.14 ± 9% perf-profile.children.cycles-pp.tick_sched_handle 1.57 ± 29% -0.5 1.03 ± 10% perf-profile.children.cycles-pp.update_process_times 3.02 ± 8% -0.5 2.52 ± 10% perf-profile.children.cycles-pp.menu_select 1.19 ± 19% -0.3 0.89 ± 10% perf-profile.children.cycles-pp.tick_nohz_next_event 0.81 ± 25% -0.2 0.56 ± 11% perf-profile.children.cycles-pp.scheduler_tick 0.42 ± 19% -0.1 0.30 ± 14% perf-profile.children.cycles-pp._raw_spin_lock 0.27 ± 13% -0.1 0.21 ± 15% perf-profile.children.cycles-pp.hrtimer_next_event_without 0.11 ± 35% -0.0 0.07 ± 19% perf-profile.children.cycles-pp.run_local_timers 0.10 ± 15% -0.0 0.07 ± 28% perf-profile.children.cycles-pp.cpu_load_update 0.14 ± 9% -0.0 0.11 ± 15% perf-profile.children.cycles-pp.perf_event_task_tick 0.07 ± 17% +0.0 0.10 ± 12% perf-profile.children.cycles-pp.blk_flush_plug_list 0.07 ± 17% +0.0 0.10 ± 12% perf-profile.children.cycles-pp.blk_mq_flush_plug_list 0.06 ± 26% +0.0 0.11 ± 17% perf-profile.children.cycles-pp.read 0.07 ± 17% +0.0 0.11 ± 36% perf-profile.children.cycles-pp.deferred_split_scan 0.15 ± 14% +0.1 0.21 ± 13% perf-profile.children.cycles-pp.blk_mq_sched_dispatch_requests 0.15 ± 16% +0.1 0.21 ± 15% perf-profile.children.cycles-pp.blk_mq_dispatch_rq_list 0.15 ± 14% +0.1 0.22 ± 14% perf-profile.children.cycles-pp.__blk_mq_run_hw_queue 0.08 ± 23% +0.1 0.14 ± 34% perf-profile.children.cycles-pp.shrink_slab 0.08 ± 23% +0.1 0.14 ± 34% perf-profile.children.cycles-pp.do_shrink_slab 0.72 ± 19% +0.3 1.00 ± 8% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 0.44 ± 18% +0.3 0.74 ± 14% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 0.86 ± 18% +0.4 1.30 ± 9% perf-profile.children.cycles-pp.blk_mq_try_issue_directly 0.88 ± 18% +0.5 1.34 ± 9% perf-profile.children.cycles-pp.__blk_mq_try_issue_directly 0.82 ± 19% +0.5 1.30 ± 9% perf-profile.children.cycles-pp.dma_pool_alloc 1.02 ± 15% +0.5 1.55 ± 9% perf-profile.children.cycles-pp.nvme_queue_rq 1.07 ± 15% +0.7 1.76 ± 21% perf-profile.children.cycles-pp.__indirect_thunk_start 2.42 ± 16% +0.7 3.16 ± 13% perf-profile.children.cycles-pp.find_next_bit 0.95 ± 26% +1.1 2.00 ± 15% perf-profile.children.cycles-pp.blk_account_io_start 2.19 ± 17% +1.5 3.72 ± 8% perf-profile.children.cycles-pp.blk_mq_make_request 2.20 ± 17% +1.5 3.73 ± 8% perf-profile.children.cycles-pp.submit_bio 2.20 ± 17% +1.5 3.73 ± 8% perf-profile.children.cycles-pp.generic_make_request 2.21 ± 17% +1.5 3.76 ± 8% perf-profile.children.cycles-pp.__swap_writepage 2.23 ± 17% +1.5 3.77 ± 7% perf-profile.children.cycles-pp.pageout 3.60 ± 13% +1.6 5.22 ± 7% perf-profile.children.cycles-pp.__alloc_pages_nodemask 3.51 ± 15% +1.6 5.15 ± 6% perf-profile.children.cycles-pp.shrink_page_list 3.48 ± 12% +1.6 5.13 ± 6% perf-profile.children.cycles-pp.do_try_to_free_pages 3.53 ± 14% +1.6 5.17 ± 6% perf-profile.children.cycles-pp.shrink_inactive_list 3.49 ± 12% +1.6 5.13 ± 6% perf-profile.children.cycles-pp.try_to_free_pages 3.51 ± 12% +1.7 5.19 ± 6% perf-profile.children.cycles-pp.__alloc_pages_slowpath 3.61 ± 14% +1.7 5.30 ± 6% perf-profile.children.cycles-pp.shrink_node_memcg 3.69 ± 15% +1.8 5.45 ± 7% perf-profile.children.cycles-pp.shrink_node 4.10 ± 17% +2.4 6.47 ± 18% perf-profile.children.cycles-pp.blk_mq_check_inflight 10.64 ± 16% +6.8 17.39 ± 17% perf-profile.children.cycles-pp.bt_iter 13.17 ± 16% +7.4 20.59 ± 18% perf-profile.children.cycles-pp.blk_account_io_done 13.39 ± 16% +7.4 20.81 ± 19% perf-profile.children.cycles-pp.blk_mq_end_request 15.67 ± 17% +8.2 23.84 ± 20% perf-profile.children.cycles-pp.handle_irq 15.66 ± 17% +8.2 23.83 ± 20% perf-profile.children.cycles-pp.handle_edge_irq 15.57 ± 17% +8.2 23.73 ± 20% perf-profile.children.cycles-pp.nvme_irq 15.60 ± 17% +8.2 23.77 ± 20% perf-profile.children.cycles-pp.handle_irq_event 15.58 ± 17% +8.2 23.75 ± 20% perf-profile.children.cycles-pp.__handle_irq_event_percpu 15.59 ± 17% +8.2 23.77 ± 20% perf-profile.children.cycles-pp.handle_irq_event_percpu 15.75 ± 17% +8.2 23.93 ± 20% perf-profile.children.cycles-pp.ret_from_intr 15.73 ± 17% +8.2 23.91 ± 20% perf-profile.children.cycles-pp.do_IRQ 15.54 ± 17% +8.2 23.73 ± 19% perf-profile.children.cycles-pp.blk_mq_complete_request 14.07 ± 16% +8.4 22.45 ± 16% perf-profile.children.cycles-pp.part_round_stats 14.05 ± 16% +8.4 22.45 ± 16% perf-profile.children.cycles-pp.blk_mq_queue_tag_busy_iter 14.05 ± 16% +8.4 22.45 ± 16% perf-profile.children.cycles-pp.blk_mq_in_flight 0.38 ± 20% -0.1 0.28 ± 16% perf-profile.self.cycles-pp._raw_spin_lock 0.10 ± 13% -0.0 0.07 ± 17% perf-profile.self.cycles-pp.idle_cpu 0.12 ± 14% -0.0 0.09 ± 7% perf-profile.self.cycles-pp.perf_mux_hrtimer_handler 0.10 ± 15% -0.0 0.07 ± 28% perf-profile.self.cycles-pp.cpu_load_update 0.14 ± 9% -0.0 0.11 ± 15% perf-profile.self.cycles-pp.perf_event_task_tick 0.62 ± 16% +0.3 0.89 ± 12% perf-profile.self.cycles-pp.dma_pool_alloc 0.44 ± 18% +0.3 0.74 ± 14% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath 0.81 ± 16% +0.5 1.32 ± 25% perf-profile.self.cycles-pp.__indirect_thunk_start 2.07 ± 16% +0.6 2.69 ± 12% perf-profile.self.cycles-pp.find_next_bit 1.77 ± 16% +1.1 2.91 ± 15% perf-profile.self.cycles-pp.blk_mq_queue_tag_busy_iter 3.82 ± 16% +2.2 6.00 ± 18% perf-profile.self.cycles-pp.blk_mq_check_inflight 6.43 ± 15% +4.1 10.56 ± 16% perf-profile.self.cycles-pp.bt_iter vm-scalability.time.system_time 600 +-+-------------------------------------------------------------------+ | | 500 +-O OO | O O OO | | O O O O O O | 400 +-+ O O O O | | | 300 +-+ .+.++. .+ .+ .+ .+.+ +.+ .++.+.++ .++.+.++. | | ++ + :.+ + + + : +.+ : +.+ + .++.+ +.+ .| 200 +-+ + + : : : : + + | |: : : : : | |: :: : : | 100 +-+ :: :: | | : : | 0 +-+-------------------------------------------------------------------+ vm-scalability.time.maximum_resident_set_size 2.5e+07 +-+---------------------------------------------------------------+ | | | ++.++.++.+. +. +. + +.++.+ +.++.+ .+.++. .++. .++.+ .+ | 2e+07 +-+ + .+ + +.+: : : : + ++ + + +.| | : + : : : : | | : : : : : | 1.5e+07 O-+O OO: : : : | |: O O O O : : : : | 1e+07 +-+ O O O O OO O : : : : | |:O O :: :: | |: :: :: | 5e+06 +-+ : : | | : : | | : : | 0 +-+---------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 5 months

8
75
0 / 0

[page cache] eb797a8ee0: vm-scalability.throughput -16.5% regression

by kernel test robot

Greeting, FYI, we noticed a -16.5% regression of vm-scalability.throughput due to commit: commit: eb797a8ee0ab4cd03df556980ce7bf167cadaa50 ("page cache: Rearrange address_space") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: vm-scalability on test machine: 80 threads Skylake with 64G memory with following parameters: runtime: 300s test: small-allocs cpufreq_governor: performance test-description: The motivation behind this suite is to exercise functions and regions of the mm/ of the Linux kernel which are of interest to us. test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/ In addition to that, the commit also has significant impact on the following tests: +------------------+----------------------------------------------------------------------+ | testcase: change | unixbench: unixbench.score 20.9% improvement | | test machine | 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G memory | | test parameters | cpufreq_governor=performance | | | nr_task=100% | | | runtime=300s | | | test=shell8 | | | ucode=0xb00002e | +------------------+----------------------------------------------------------------------+ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/tbox_group/test/testcase: gcc-7/performance/x86_64-rhel-7.2/debian-x86_64-2018-04-03.cgz/300s/lkp-skl-2sp2/small-allocs/vm-scalability commit: f32f004cdd ("ida: Convert to XArray") eb797a8ee0 ("page cache: Rearrange address_space") f32f004cddf86d63 eb797a8ee0ab4cd03df556980c ---------------- -------------------------- fail:runs %reproduction fail:runs | | | 3:4 -13% 3:4 perf-profile.calltrace.cycles-pp.error_entry 3:4 -12% 3:4 perf-profile.children.cycles-pp.error_entry 1:4 -6% 1:4 perf-profile.self.cycles-pp.error_entry %stddev %change %stddev \ | \ 235891 -16.5% 197085 vm-scalability.median 18881481 -16.5% 15769081 vm-scalability.throughput 316.19 +14.4% 361.58 vm-scalability.time.elapsed_time 316.19 +14.4% 361.58 vm-scalability.time.elapsed_time.max 22924 +15.9% 26576 vm-scalability.time.system_time 3254041 ± 9% +36.4% 4437311 ± 3% vm-scalability.time.voluntary_context_switches 277831 ± 3% +9.5% 304359 interrupts.CAL:Function_call_interrupts 102367 ± 2% +10.1% 112694 ± 2% meminfo.Shmem 6.67 ± 5% -0.9 5.76 ± 2% mpstat.cpu.usr% 0.49 -5.0% 0.46 pmeter.Average_Active_Power 38678749 -12.1% 34005251 pmeter.performance_per_watt 2621420 ± 38% +59.2% 4173292 ± 3% turbostat.C1 62964314 ± 10% +18.7% 74735975 turbostat.IRQ 20821 ± 10% +20.6% 25103 ± 2% vmstat.system.cs 192700 ± 8% +5.9% 204006 vmstat.system.in 76742 +3.7% 79550 proc-vmstat.nr_active_anon 25578 ± 2% +10.1% 28154 ± 2% proc-vmstat.nr_shmem 76742 +3.7% 79550 proc-vmstat.nr_zone_active_anon 34211075 ± 14% +28.7% 44023085 ± 3% cpuidle.C1.time 2628057 ± 37% +59.1% 4179955 ± 3% cpuidle.C1.usage 200488 ± 20% +75.5% 351836 ± 13% cpuidle.POLL.time 57706 ± 49% +93.1% 111419 ± 18% cpuidle.POLL.usage 2.08 ± 14% +20.7% 2.51 ± 4% sched_debug.cfs_rq:/.nr_spread_over.avg 50.05 ± 36% -38.0% 31.04 ± 24% sched_debug.cpu.cpu_load[1].max 0.25 ± 14% +17.4% 0.29 ± 7% sched_debug.cpu.nr_running.stddev 42905 ± 12% +26.2% 54143 ± 3% sched_debug.cpu.nr_switches.avg 19996 ± 17% +43.0% 28586 ± 7% sched_debug.cpu.nr_switches.min 43774 ± 12% +26.5% 55370 ± 3% sched_debug.cpu.sched_count.avg 20285 ± 17% +43.1% 29024 ± 8% sched_debug.cpu.sched_count.min 19949 ± 12% +28.0% 25530 ± 3% sched_debug.cpu.sched_goidle.avg 9260 ± 16% +44.9% 13422 ± 8% sched_debug.cpu.sched_goidle.min 23108 ± 12% +26.0% 29110 ± 3% sched_debug.cpu.ttwu_count.avg 25905 ± 11% +25.8% 32593 ± 2% sched_debug.cpu.ttwu_count.max 21683 ± 12% +26.0% 27323 ± 3% sched_debug.cpu.ttwu_count.min 73.74 -3.6 70.12 perf-stat.cache-miss-rate% 2.83e+10 ± 2% +5.5% 2.985e+10 perf-stat.cache-misses 3.838e+10 +10.9% 4.257e+10 perf-stat.cache-references 6787110 ± 9% +35.5% 9197959 ± 3% perf-stat.context-switches 3.17 +11.1% 3.52 perf-stat.cpi 7.609e+13 +14.5% 8.715e+13 perf-stat.cpu-cycles 21380 +11.1% 23753 perf-stat.cpu-migrations 0.08 -0.0 0.07 perf-stat.dTLB-load-miss-rate% 6.634e+12 +3.8% 6.888e+12 perf-stat.dTLB-loads 0.13 -0.0 0.12 perf-stat.dTLB-store-miss-rate% 1.135e+09 -5.6% 1.071e+09 perf-stat.dTLB-store-misses 2.184e+09 -2.3% 2.135e+09 perf-stat.iTLB-load-misses 2.404e+13 +3.1% 2.479e+13 perf-stat.instructions 11006 +5.5% 11614 perf-stat.instructions-per-iTLB-miss 0.32 -10.0% 0.28 perf-stat.ipc 2.898e+09 +15.2% 3.337e+09 ± 2% perf-stat.node-load-misses 7.235e+08 +19.1% 8.615e+08 ± 4% perf-stat.node-store-misses 4975 +5.3% 5236 perf-stat.path-length 1.10 -0.1 0.97 ± 2% perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.vma_link 0.68 ± 2% -0.1 0.59 perf-profile.calltrace.cycles-pp.vma_interval_tree_insert.vma_link.mmap_region.do_mmap.vm_mmap_pgoff 0.59 ± 3% -0.0 0.55 ± 2% perf-profile.calltrace.cycles-pp.swapgs_restore_regs_and_return_to_usermode 1.04 ± 5% +0.1 1.19 ± 3% perf-profile.calltrace.cycles-pp.task_numa_work.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.04 ± 5% +0.1 1.19 ± 3% perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.04 ± 5% +0.1 1.19 ± 3% perf-profile.calltrace.cycles-pp.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.64 ± 2% +0.4 2.00 perf-profile.calltrace.cycles-pp.page_fault 1.57 ± 2% +0.4 1.93 perf-profile.calltrace.cycles-pp.__do_page_fault.do_page_fault.page_fault 1.59 ± 2% +0.4 1.96 perf-profile.calltrace.cycles-pp.do_page_fault.page_fault 0.65 +0.5 1.19 ± 3% perf-profile.calltrace.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 +1.0 1.03 ± 4% perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 1.10 -0.1 0.97 ± 2% perf-profile.children.cycles-pp.rwsem_spin_on_owner 0.68 ± 2% -0.1 0.59 perf-profile.children.cycles-pp.vma_interval_tree_insert 0.62 ± 2% -0.1 0.55 ± 2% perf-profile.children.cycles-pp.native_irq_return_iret 0.47 -0.1 0.41 perf-profile.children.cycles-pp.sync_regs 0.32 ± 4% -0.1 0.27 ± 3% perf-profile.children.cycles-pp.get_unmapped_area 0.26 ± 3% -0.1 0.21 ± 3% perf-profile.children.cycles-pp.__perf_sw_event 0.21 ± 4% -0.0 0.17 ± 5% perf-profile.children.cycles-pp.find_vma 0.27 ± 3% -0.0 0.22 ± 3% perf-profile.children.cycles-pp.unmapped_area_topdown 0.11 ± 42% -0.0 0.07 ± 7% perf-profile.children.cycles-pp.syscall_return_via_sysret 0.29 ± 2% -0.0 0.24 ± 3% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown 0.19 ± 4% -0.0 0.15 ± 2% perf-profile.children.cycles-pp.___perf_sw_event 0.13 ± 3% -0.0 0.10 ± 4% perf-profile.children.cycles-pp.vma_policy_mof 0.59 ± 3% -0.0 0.56 ± 2% perf-profile.children.cycles-pp.swapgs_restore_regs_and_return_to_usermode 0.16 ± 2% -0.0 0.13 perf-profile.children.cycles-pp.__rb_insert_augmented 0.19 ± 2% -0.0 0.17 ± 4% perf-profile.children.cycles-pp.perf_event_mmap 0.08 ± 10% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.vmacache_find 0.08 ± 10% -0.0 0.06 ± 6% perf-profile.children.cycles-pp.__fget 0.08 -0.0 0.07 ± 6% perf-profile.children.cycles-pp.d_path 0.09 ± 4% +0.0 0.13 ± 3% perf-profile.children.cycles-pp.__vma_link_rb 0.01 ±173% +0.1 0.12 ± 4% perf-profile.children.cycles-pp.osq_unlock 1.19 ± 3% +0.2 1.36 ± 2% perf-profile.children.cycles-pp.exit_to_usermode_loop 1.19 ± 3% +0.2 1.36 ± 2% perf-profile.children.cycles-pp.task_work_run 1.19 ± 3% +0.2 1.36 ± 2% perf-profile.children.cycles-pp.task_numa_work 1.66 ± 2% +0.4 2.01 perf-profile.children.cycles-pp.page_fault 1.59 ± 2% +0.4 1.96 perf-profile.children.cycles-pp.do_page_fault 1.58 ± 2% +0.4 1.95 perf-profile.children.cycles-pp.__do_page_fault 0.66 +0.5 1.20 ± 4% perf-profile.children.cycles-pp.handle_mm_fault 0.47 +0.6 1.04 ± 4% perf-profile.children.cycles-pp.__handle_mm_fault 1.09 -0.1 0.96 ± 2% perf-profile.self.cycles-pp.rwsem_spin_on_owner 0.67 ± 2% -0.1 0.59 ± 2% perf-profile.self.cycles-pp.vma_interval_tree_insert 0.62 ± 2% -0.1 0.55 ± 3% perf-profile.self.cycles-pp.native_irq_return_iret 0.46 -0.1 0.40 perf-profile.self.cycles-pp.sync_regs 0.43 -0.1 0.37 ± 2% perf-profile.self.cycles-pp.swapgs_restore_regs_and_return_to_usermode 0.30 ± 5% -0.1 0.25 ± 3% perf-profile.self.cycles-pp.__do_page_fault 0.11 ± 42% -0.0 0.07 ± 7% perf-profile.self.cycles-pp.syscall_return_via_sysret 0.27 ± 3% -0.0 0.22 ± 3% perf-profile.self.cycles-pp.unmapped_area_topdown 0.17 ± 3% -0.0 0.13 ± 3% perf-profile.self.cycles-pp.___perf_sw_event 0.14 ± 8% -0.0 0.11 perf-profile.self.cycles-pp.mmap_region 0.18 ± 2% -0.0 0.15 ± 2% perf-profile.self.cycles-pp.handle_mm_fault 0.15 -0.0 0.12 ± 4% perf-profile.self.cycles-pp.__rb_insert_augmented 0.12 ± 4% -0.0 0.10 ± 7% perf-profile.self.cycles-pp.find_vma 0.08 ± 5% -0.0 0.06 perf-profile.self.cycles-pp.vma_policy_mof 0.08 ± 8% -0.0 0.06 ± 6% perf-profile.self.cycles-pp.vmacache_find 0.08 ± 10% -0.0 0.06 ± 6% perf-profile.self.cycles-pp.__fget 0.07 ± 6% -0.0 0.05 ± 8% perf-profile.self.cycles-pp.__perf_sw_event 0.06 -0.0 0.05 perf-profile.self.cycles-pp.d_path 0.08 ± 5% +0.0 0.10 ± 7% perf-profile.self.cycles-pp.down_write 0.11 ± 4% +0.0 0.16 ± 2% perf-profile.self.cycles-pp.up_write 0.00 +0.1 0.08 ± 5% perf-profile.self.cycles-pp.__vma_link_rb 0.18 ± 9% +0.1 0.28 ± 6% perf-profile.self.cycles-pp.rwsem_down_write_failed 0.01 ±173% +0.1 0.12 ± 4% perf-profile.self.cycles-pp.osq_unlock 1.05 ± 4% +0.2 1.26 ± 2% perf-profile.self.cycles-pp.task_numa_work 0.35 ± 2% +0.6 0.95 ± 5% perf-profile.self.cycles-pp.__handle_mm_fault vm-scalability.time.system_time 30000 +-+-----------------------------------------------------------------+ | O O | 25000 O-O O O O O O O O O O O O O O O O O O O O O | |.+..+.+..+.+..+.+.+..+.+..+.+..+.+ .+..+.+.+..+.+..+.+..+.| | : + + | 20000 +-+ : : : | | : :: : | 15000 +-+ : : : : | | : : : : | 10000 +-+ : : : : | | : : : : | | : : : : | 5000 +-+ :: :: | | : : | 0 +-+-----------------------------------------------------------------+ vm-scalability.time.elapsed_time 400 +-+-------------------------------------------------------------------+ O O O O O O O O O O O O O O O O O O O O O O O O | 350 +-+ | 300 +-++.+..+.+..+.+..+.+..+.+..+.+..+.+ + +..+.+..+.+..+.+..+.+..+.| | : : : | 250 +-+ : :: : | | : : : : | 200 +-+ : : : : | | : : : : | 150 +-+ : : : : | 100 +-+ : : : : | | : : : : | 50 +-+ :: :: | | : : | 0 +-+-------------------------------------------------------------------+ vm-scalability.time.elapsed_time.max 400 +-+-------------------------------------------------------------------+ O O O O O O O O O O O O O O O O O O O O O O O O | 350 +-+ | 300 +-++.+..+.+..+.+..+.+..+.+..+.+..+.+ + +..+.+..+.+..+.+..+.+..+.| | : : : | 250 +-+ : :: : | | : : : : | 200 +-+ : : : : | | : : : : | 150 +-+ : : : : | 100 +-+ : : : : | | : : : : | 50 +-+ :: :: | | : : | 0 +-+-------------------------------------------------------------------+ vm-scalability.throughput 2e+07 +-+---------------------------------------------------------------+ 1.8e+07 +-+..+.+.+..+.+..+.+.+..+.+.+..+.+ + +..+.+..+.+.+..+.+.+..+.| | : : : | 1.6e+07 O-O O O O O O O O O O O O O O O O O O O O O O O | 1.4e+07 +-+ : :: : | | : : : : | 1.2e+07 +-+ : : : : | 1e+07 +-+ : : : : | 8e+06 +-+ : : : : | | : : : : | 6e+06 +-+ : : : : | 4e+06 +-+ :: : | | : : | 2e+06 +-+ : : | 0 +-+---------------------------------------------------------------+ vm-scalability.median 250000 +-+----------------------------------------------------------------+ |.+..+.+..+.+.+..+.+..+.+.+..+ + + +.+..+.+..+.+.+..+.+..+.| | : : : | 200000 O-O O O O O O O O O O O O O O O O O O O O O O O | | : :: : | | : : : : | 150000 +-+ : : : : | | : : : : | 100000 +-+ : : : : | | : : : : | | : : : : | 50000 +-+ : :: | | : : | | : : | 0 +-+----------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample *************************************************************************************************** lkp-bdw-ep3b: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G memory ========================================================================================= compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-rhel-7.2/100%/debian-x86_64-2018-04-03.cgz/300s/lkp-bdw-ep3b/shell8/unixbench/0xb00002e commit: f32f004cdd ("ida: Convert to XArray") eb797a8ee0 ("page cache: Rearrange address_space") f32f004cddf86d63 eb797a8ee0ab4cd03df556980c ---------------- -------------------------- fail:runs %reproduction fail:runs | | | :4 25% 1:4 dmesg.WARNING:at_ip___perf_sw_event/0x :4 25% 1:4 dmesg.WARNING:at_ip__slab_free/0x :4 25% 1:4 dmesg.WARNING:at_ip_filename_lookup/0x 1:4 -25% :4 dmesg.WARNING:at_ip_fsnotify/0x 1:4 -25% :4 dmesg.WARNING:at_ip_perf_event_mmap_output/0x 1:4 9% 2:4 perf-profile.children.cycles-pp.error_entry 1:4 7% 1:4 perf-profile.self.cycles-pp.error_entry %stddev %change %stddev \ | \ 39940 +20.9% 48288 unixbench.score 641.38 +1.0% 647.51 unixbench.time.elapsed_time 641.38 +1.0% 647.51 unixbench.time.elapsed_time.max 24220392 +29.1% 31263367 ± 2% unixbench.time.involuntary_context_switches 1.836e+09 +20.8% 2.217e+09 unixbench.time.minor_page_faults 7052 +2.1% 7200 unixbench.time.percent_of_cpu_this_job_got 36337 -2.7% 35347 unixbench.time.system_time 8893 +26.8% 11279 ± 2% unixbench.time.user_time 85632909 +4.3% 89281018 unixbench.time.voluntary_context_switches 15301176 +21.7% 18622462 unixbench.workload 42884872 +19.0% 51033794 softirqs.RCU 43387938 ± 6% -12.9% 37797790 ± 2% cpuidle.C1.usage 1155156 ± 4% -24.0% 878414 ± 4% cpuidle.POLL.usage 152008 ± 9% +15.2% 175048 ± 7% meminfo.DirectMap4k 255196 +13.6% 289806 meminfo.Shmem 100.25 +26.7% 127.00 ± 2% vmstat.procs.r 337268 +3.6% 349315 vmstat.system.cs 19.30 -1.7 17.59 mpstat.cpu.idle% 0.01 ± 30% +0.0 0.02 ± 35% mpstat.cpu.iowait% 15.54 +3.6 19.11 mpstat.cpu.usr% 7.086e+08 +20.8% 8.56e+08 ± 2% numa-numastat.node0.local_node 7.086e+08 +20.8% 8.561e+08 ± 2% numa-numastat.node0.numa_hit 7.053e+08 +21.3% 8.558e+08 numa-numastat.node1.local_node 7.053e+08 +21.3% 8.558e+08 numa-numastat.node1.numa_hit 2274 +2.1% 2322 turbostat.Avg_MHz 43383925 ± 6% -12.9% 37793914 ± 2% turbostat.C1 14.41 ± 2% -17.4% 11.90 ± 7% turbostat.CPU%c1 243.24 +2.2% 248.48 turbostat.PkgWatt 14.16 +8.1% 15.30 turbostat.RAMWatt 6807 ± 4% +48.1% 10084 ± 5% slabinfo.files_cache.active_objs 6807 ± 4% +48.2% 10090 ± 5% slabinfo.files_cache.num_objs 3616 +23.8% 4475 ± 5% slabinfo.kmalloc-256.active_objs 3616 +23.8% 4475 ± 5% slabinfo.kmalloc-256.num_objs 17134 ± 4% +13.8% 19493 ± 2% slabinfo.proc_inode_cache.active_objs 17134 ± 4% +14.0% 19524 ± 2% slabinfo.proc_inode_cache.num_objs 3393 ± 6% +17.7% 3994 ± 3% slabinfo.sock_inode_cache.active_objs 3393 ± 6% +17.7% 3994 ± 3% slabinfo.sock_inode_cache.num_objs 1241 ± 8% +15.0% 1427 ± 6% slabinfo.task_group.active_objs 1241 ± 8% +15.0% 1427 ± 6% slabinfo.task_group.num_objs 713963 ± 14% -20.9% 564405 ± 4% numa-meminfo.node0.FilePages 20539 ± 9% -19.7% 16496 ± 15% numa-meminfo.node0.Mapped 1281514 ± 9% -10.6% 1145886 ± 4% numa-meminfo.node0.MemUsed 683.75 ± 11% +54.1% 1053 ± 12% numa-meminfo.node0.Mlocked 48239 ± 4% -19.8% 38686 ± 17% numa-meminfo.node0.SReclaimable 669804 ± 15% +27.8% 856173 ± 3% numa-meminfo.node1.FilePages 4719 ± 56% +227.5% 15456 ± 43% numa-meminfo.node1.Inactive 4644 ± 57% +232.0% 15419 ± 43% numa-meminfo.node1.Inactive(anon) 14609 ± 12% +47.2% 21499 ± 11% numa-meminfo.node1.Mapped 40126 ± 6% +29.6% 52000 ± 12% numa-meminfo.node1.SReclaimable 119605 ± 96% +131.3% 276593 ± 3% numa-meminfo.node1.Shmem 130207 +18.0% 153583 ± 5% numa-meminfo.node1.Slab 547652 ± 4% +5.4% 577200 ± 4% numa-meminfo.node1.Unevictable 178549 ± 14% -21.0% 141123 ± 4% numa-vmstat.node0.nr_file_pages 5179 ± 9% -20.3% 4130 ± 16% numa-vmstat.node0.nr_mapped 170.50 ± 12% +54.5% 263.50 ± 13% numa-vmstat.node0.nr_mlock 12061 ± 4% -19.8% 9670 ± 17% numa-vmstat.node0.nr_slab_reclaimable 3.542e+08 +21.5% 4.304e+08 ± 2% numa-vmstat.node0.numa_hit 3.542e+08 +21.5% 4.304e+08 ± 2% numa-vmstat.node0.numa_local 167459 ± 15% +27.9% 214111 ± 3% numa-vmstat.node1.nr_file_pages 1150 ± 57% +234.3% 3845 ± 44% numa-vmstat.node1.nr_inactive_anon 3673 ± 11% +49.4% 5488 ± 13% numa-vmstat.node1.nr_mapped 29911 ± 96% +131.3% 69188 ± 3% numa-vmstat.node1.nr_shmem 10036 ± 6% +29.5% 13000 ± 12% numa-vmstat.node1.nr_slab_reclaimable 22541 +12.7% 25401 ± 3% numa-vmstat.node1.nr_slab_unreclaimable 136898 ± 4% +5.4% 144317 ± 4% numa-vmstat.node1.nr_unevictable 1150 ± 57% +234.3% 3845 ± 44% numa-vmstat.node1.nr_zone_inactive_anon 136898 ± 4% +5.4% 144317 ± 4% numa-vmstat.node1.nr_zone_unevictable 3.525e+08 +22.0% 4.301e+08 ± 2% numa-vmstat.node1.numa_hit 3.523e+08 +22.0% 4.299e+08 ± 2% numa-vmstat.node1.numa_local 149893 +6.3% 159383 proc-vmstat.nr_active_anon 345938 +2.7% 355212 proc-vmstat.nr_file_pages 6075 +9.3% 6643 proc-vmstat.nr_inactive_anon 30490 +2.2% 31159 proc-vmstat.nr_kernel_stack 8870 +8.1% 9585 proc-vmstat.nr_mapped 9254 +2.3% 9471 proc-vmstat.nr_page_table_pages 63803 +13.6% 72460 proc-vmstat.nr_shmem 22097 +2.6% 22671 proc-vmstat.nr_slab_reclaimable 47965 +6.9% 51274 proc-vmstat.nr_slab_unreclaimable 149893 +6.3% 159383 proc-vmstat.nr_zone_active_anon 6075 +9.3% 6643 proc-vmstat.nr_zone_inactive_anon 1.414e+09 +21.1% 1.712e+09 proc-vmstat.numa_hit 1.414e+09 +21.1% 1.712e+09 proc-vmstat.numa_local 47447 +10.8% 52569 proc-vmstat.pgactivate 1.487e+09 +21.1% 1.801e+09 proc-vmstat.pgalloc_normal 1.846e+09 +20.7% 2.228e+09 proc-vmstat.pgfault 1.487e+09 +21.1% 1.801e+09 proc-vmstat.pgfree 63795 +20.6% 76962 proc-vmstat.thp_deferred_split_page 63790 +20.6% 76940 proc-vmstat.thp_fault_alloc 26894638 +20.9% 32515246 proc-vmstat.unevictable_pgs_culled 1.556e+13 +4.9% 1.632e+13 perf-stat.branch-instructions 1.54 +0.2 1.75 perf-stat.branch-miss-rate% 2.399e+11 +19.4% 2.863e+11 perf-stat.branch-misses 1.034e+11 +17.1% 1.21e+11 ± 2% perf-stat.cache-misses 9.784e+11 +18.6% 1.161e+12 perf-stat.cache-references 2.18e+08 +4.6% 2.281e+08 perf-stat.context-switches 1.60 -1.0% 1.59 perf-stat.cpi 1.281e+14 +3.2% 1.322e+14 perf-stat.cpu-cycles 46095973 +22.0% 56220581 perf-stat.cpu-migrations 0.19 +0.0 0.23 ± 2% perf-stat.dTLB-load-miss-rate% 4.148e+10 +23.3% 5.113e+10 ± 2% perf-stat.dTLB-load-misses 2.213e+13 +2.1% 2.261e+13 perf-stat.dTLB-loads 5.537e+09 +22.2% 6.767e+09 ± 2% perf-stat.dTLB-store-misses 8.001e+12 +20.3% 9.625e+12 perf-stat.dTLB-stores 2.034e+10 +20.1% 2.443e+10 perf-stat.iTLB-load-misses 1.3e+10 +17.1% 1.522e+10 perf-stat.iTLB-loads 7.991e+13 +4.3% 8.332e+13 perf-stat.instructions 3929 -13.2% 3411 perf-stat.instructions-per-iTLB-miss 1.81e+09 +20.7% 2.184e+09 perf-stat.minor-faults 91.68 -2.3 89.39 perf-stat.node-load-miss-rate% 3.395e+10 +14.5% 3.889e+10 perf-stat.node-load-misses 3.083e+09 +49.7% 4.616e+09 ± 3% perf-stat.node-loads 1.018e+10 +20.2% 1.224e+10 ± 2% perf-stat.node-store-misses 8.896e+09 +21.3% 1.079e+10 ± 2% perf-stat.node-stores 1.81e+09 +20.7% 2.184e+09 perf-stat.page-faults 5222880 -14.3% 4475405 perf-stat.path-length 1942 ± 7% +37.3% 2665 ± 18% sched_debug.cfs_rq:/.exec_clock.stddev 47.72 ± 7% +18.8% 56.67 ± 2% sched_debug.cfs_rq:/.load_avg.avg 4.95 ± 9% +44.0% 7.14 ± 7% sched_debug.cfs_rq:/.load_avg.min 265960 ± 8% +36.3% 362493 ± 15% sched_debug.cfs_rq:/.min_vruntime.stddev 0.33 ± 6% -11.5% 0.29 ± 5% sched_debug.cfs_rq:/.nr_running.stddev 2.77 ± 7% +88.4% 5.23 ± 3% sched_debug.cfs_rq:/.nr_spread_over.avg 7.18 ± 5% +79.1% 12.86 ± 15% sched_debug.cfs_rq:/.nr_spread_over.max 0.27 ± 52% +358.3% 1.25 ± 25% sched_debug.cfs_rq:/.nr_spread_over.min 1.57 ± 2% +40.9% 2.21 ± 2% sched_debug.cfs_rq:/.nr_spread_over.stddev 27.36 ± 5% +13.2% 30.98 ± 6% sched_debug.cfs_rq:/.removed.load_avg.avg 1263 ± 5% +14.1% 1442 ± 6% sched_debug.cfs_rq:/.removed.runnable_sum.avg 265962 ± 8% +36.3% 362499 ± 15% sched_debug.cfs_rq:/.spread0.stddev 8169 ± 28% +64.2% 13411 ± 21% sched_debug.cpu.avg_idle.min 298.80 ± 11% +57.4% 470.43 ± 28% sched_debug.cpu.cpu_load[0].max 7.46 ± 5% +34.4% 10.03 ± 12% sched_debug.cpu.cpu_load[1].avg 212.55 ± 15% +52.5% 324.14 ± 17% sched_debug.cpu.cpu_load[1].max 25.69 ± 9% +52.4% 39.15 ± 19% sched_debug.cpu.cpu_load[1].stddev 7.18 ± 3% +32.7% 9.53 ± 5% sched_debug.cpu.cpu_load[2].avg 151.27 ± 16% +51.9% 229.80 ± 11% sched_debug.cpu.cpu_load[2].max 19.45 ± 11% +50.2% 29.22 ± 10% sched_debug.cpu.cpu_load[2].stddev 6.92 ± 2% +29.5% 8.96 ± 4% sched_debug.cpu.cpu_load[3].avg 106.45 ± 23% +52.6% 162.50 ± 15% sched_debug.cpu.cpu_load[3].max 14.94 ± 15% +48.0% 22.10 ± 10% sched_debug.cpu.cpu_load[3].stddev 6.45 ± 2% +25.9% 8.12 ± 6% sched_debug.cpu.cpu_load[4].avg 79.82 ± 34% +56.2% 124.64 ± 25% sched_debug.cpu.cpu_load[4].max 11.70 ± 23% +47.3% 17.23 ± 17% sched_debug.cpu.cpu_load[4].stddev 422565 ± 24% +22.7% 518276 ± 15% sched_debug.cpu.load.max 0.00 ± 3% +23.4% 0.00 ± 14% sched_debug.cpu.next_balance.stddev 1.14 ± 5% +31.4% 1.50 ± 7% sched_debug.cpu.nr_running.avg 3.16 ± 2% +38.1% 4.36 ± 9% sched_debug.cpu.nr_running.max 0.71 ± 2% +33.7% 0.95 ± 7% sched_debug.cpu.nr_running.stddev 39284 ± 7% +47.6% 57979 ± 20% sched_debug.cpu.nr_switches.stddev 1658 ± 12% +73.9% 2884 ± 11% sched_debug.cpu.nr_uninterruptible.max -1902 +212.1% -5938 sched_debug.cpu.nr_uninterruptible.min 716.66 ± 9% +107.5% 1487 ± 30% sched_debug.cpu.nr_uninterruptible.stddev 43221 ± 7% +46.5% 63340 ± 18% sched_debug.cpu.sched_count.stddev 351785 ± 3% -14.1% 302212 sched_debug.cpu.sched_goidle.min 21765 ± 7% +51.5% 32969 ± 24% sched_debug.cpu.sched_goidle.stddev 148360 +23.9% 183753 ± 2% sched_debug.cpu.ttwu_local.avg 152765 +24.4% 190065 ± 2% sched_debug.cpu.ttwu_local.max 2051 ± 10% +87.1% 3838 ± 32% sched_debug.cpu.ttwu_local.stddev 0.00 ± 25% +2.1e+05% 0.56 ± 46% sched_debug.rt_rq:/.rt_time.avg 0.02 ± 25% +2.1e+05% 49.46 ± 46% sched_debug.rt_rq:/.rt_time.max 0.00 ± 25% +2.1e+05% 5.24 ± 46% sched_debug.rt_rq:/.rt_time.stddev 20.84 ± 2% -4.4 16.42 ± 3% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.unlink_file_vma 21.69 ± 2% -4.4 17.32 ± 2% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.unlink_file_vma.free_pgtables 17.27 ± 2% -3.4 13.86 ± 3% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.unlink_file_vma.free_pgtables.exit_mmap 17.44 -3.4 14.05 ± 3% perf-profile.calltrace.cycles-pp.down_write.unlink_file_vma.free_pgtables.exit_mmap.mmput 36.96 -3.1 33.88 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 36.94 -3.1 33.87 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 12.69 -2.2 10.53 ± 2% perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 12.71 -2.2 10.55 ± 2% perf-profile.calltrace.cycles-pp.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 13.36 -2.0 11.41 perf-profile.calltrace.cycles-pp.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64 8.96 ± 2% -1.9 7.03 ± 3% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.__vma_adjust.__split_vma 8.63 ± 2% -1.9 6.71 ± 3% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.__vma_adjust 13.61 -1.9 11.71 perf-profile.calltrace.cycles-pp.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.11 -1.8 6.36 ± 3% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.copy_process 8.44 -1.7 6.70 ± 2% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.copy_process._do_fork.do_syscall_64 8.44 -1.7 6.70 ± 2% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.copy_process._do_fork 8.50 -1.7 6.76 ± 2% perf-profile.calltrace.cycles-pp.down_write.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.70 ± 2% -1.7 7.01 ± 3% perf-profile.calltrace.cycles-pp.unlink_file_vma.free_pgtables.exit_mmap.mmput.flush_old_exec 9.06 -1.6 7.47 ± 2% perf-profile.calltrace.cycles-pp.unlink_file_vma.free_pgtables.exit_mmap.mmput.do_exit 9.36 ± 2% -1.6 7.77 ± 2% perf-profile.calltrace.cycles-pp.free_pgtables.exit_mmap.mmput.flush_old_exec.load_elf_binary 9.71 -1.5 8.21 ± 2% perf-profile.calltrace.cycles-pp.free_pgtables.exit_mmap.mmput.do_exit.do_group_exit 6.71 ± 2% -1.5 5.26 ± 3% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.__vma_adjust.__split_vma.mprotect_fixup 6.77 ± 2% -1.4 5.32 ± 3% perf-profile.calltrace.cycles-pp.down_write.__vma_adjust.__split_vma.mprotect_fixup.do_mprotect_pkey 9.54 -1.3 8.23 ± 3% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 10.17 -1.3 8.86 ± 4% perf-profile.calltrace.cycles-pp.secondary_startup_64 9.31 -1.3 8.01 ± 4% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 10.04 -1.3 8.74 ± 3% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 7.63 ± 2% -1.3 6.33 ± 2% perf-profile.calltrace.cycles-pp.__vma_adjust.__split_vma.mprotect_fixup.do_mprotect_pkey.__x64_sys_mprotect 10.04 -1.3 8.75 ± 3% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64 10.04 -1.3 8.75 ± 3% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64 7.34 -1.3 6.05 ± 2% perf-profile.calltrace.cycles-pp.do_munmap.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff 7.71 ± 2% -1.3 6.43 ± 2% perf-profile.calltrace.cycles-pp.__split_vma.mprotect_fixup.do_mprotect_pkey.__x64_sys_mprotect.do_syscall_64 10.84 -1.2 9.62 perf-profile.calltrace.cycles-pp.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork 8.01 ± 2% -1.2 6.80 ± 2% perf-profile.calltrace.cycles-pp.mprotect_fixup.do_mprotect_pkey.__x64_sys_mprotect.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.09 ± 2% -1.2 6.90 ± 2% perf-profile.calltrace.cycles-pp.do_mprotect_pkey.__x64_sys_mprotect.do_syscall_64.entry_SYSCALL_64_after_hwframe 8.10 ± 2% -1.2 6.90 ± 2% perf-profile.calltrace.cycles-pp.__x64_sys_mprotect.do_syscall_64.entry_SYSCALL_64_after_hwframe 11.17 -1.2 9.99 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__libc_fork 11.16 -1.2 9.99 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork 11.15 -1.2 9.98 perf-profile.calltrace.cycles-pp._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe.__libc_fork 11.80 -1.1 10.73 perf-profile.calltrace.cycles-pp.__libc_fork 4.28 -1.1 3.21 ± 3% perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.vma_link 4.44 ± 2% -1.0 3.47 ± 2% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.unlink_file_vma.free_pgtables.unmap_region 4.45 -1.0 3.49 ± 2% perf-profile.calltrace.cycles-pp.down_write.unlink_file_vma.free_pgtables.unmap_region.do_munmap 11.18 -1.0 10.22 perf-profile.calltrace.cycles-pp.exit_mmap.mmput.flush_old_exec.load_elf_binary.search_binary_handler 4.48 -1.0 3.52 ± 2% perf-profile.calltrace.cycles-pp.unlink_file_vma.free_pgtables.unmap_region.do_munmap.mmap_region 11.19 -1.0 10.23 perf-profile.calltrace.cycles-pp.mmput.flush_old_exec.load_elf_binary.search_binary_handler.__do_execve_file 4.43 -0.9 3.48 ± 8% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.vma_link.mmap_region.do_mmap 4.43 -0.9 3.48 ± 8% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed.call_rwsem_down_write_failed.down_write.vma_link.mmap_region 4.67 -0.9 3.73 ± 2% perf-profile.calltrace.cycles-pp.free_pgtables.unmap_region.do_munmap.mmap_region.do_mmap 4.45 -0.9 3.51 ± 9% perf-profile.calltrace.cycles-pp.down_write.vma_link.mmap_region.do_mmap.vm_mmap_pgoff 11.30 -0.9 10.38 perf-profile.calltrace.cycles-pp.flush_old_exec.load_elf_binary.search_binary_handler.__do_execve_file.__x64_sys_execve 4.85 -0.9 3.98 ± 2% perf-profile.calltrace.cycles-pp.unmap_region.do_munmap.mmap_region.do_mmap.vm_mmap_pgoff 5.40 -0.8 4.57 ± 2% perf-profile.calltrace.cycles-pp.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.ksys_mmap_pgoff 2.25 -0.5 1.78 ± 3% perf-profile.calltrace.cycles-pp.down_write.__vma_adjust.__split_vma.do_munmap.mmap_region 2.25 -0.5 1.78 ± 3% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed.down_write.__vma_adjust.__split_vma.do_munmap 2.42 -0.4 1.98 ± 2% perf-profile.calltrace.cycles-pp.__vma_adjust.__split_vma.do_munmap.mmap_region.do_mmap 2.43 -0.4 1.99 ± 2% perf-profile.calltrace.cycles-pp.__split_vma.do_munmap.mmap_region.do_mmap.vm_mmap_pgoff 13.17 -0.3 12.82 perf-profile.calltrace.cycles-pp.exit_mmap.mmput.do_exit.do_group_exit.__x64_sys_exit_group 13.17 -0.3 12.83 perf-profile.calltrace.cycles-pp.mmput.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64 2.69 ± 2% -0.1 2.56 perf-profile.calltrace.cycles-pp.filemap_map_pages.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault 0.56 +0.2 0.72 ± 2% perf-profile.calltrace.cycles-pp._IO_default_xsputn 0.63 +0.2 0.78 ± 3% perf-profile.calltrace.cycles-pp.copy_strings.__do_execve_file.__x64_sys_execve.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.75 +0.2 0.92 ± 2% perf-profile.calltrace.cycles-pp.wp_page_copy.do_wp_page.__handle_mm_fault.handle_mm_fault.__do_page_fault 0.82 +0.2 1.01 ± 2% perf-profile.calltrace.cycles-pp.do_wp_page.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault 0.94 ± 2% +0.2 1.16 perf-profile.calltrace.cycles-pp._dl_addr 0.64 ± 2% +0.2 0.87 ± 4% perf-profile.calltrace.cycles-pp.ret_from_fork 0.63 ± 2% +0.2 0.87 ± 4% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork 0.67 ± 2% +0.2 0.91 ± 4% perf-profile.calltrace.cycles-pp.page_remove_rmap.unmap_page_range.unmap_vmas.exit_mmap.mmput 0.87 +0.2 1.12 ± 2% perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.88 +0.2 1.13 perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.setlocale 0.70 ± 2% +0.3 0.96 ± 3% perf-profile.calltrace.cycles-pp.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap.mmput.flush_old_exec 1.10 +0.3 1.37 ± 2% perf-profile.calltrace.cycles-pp.__strcoll_l 0.70 ± 2% +0.3 0.97 ± 3% perf-profile.calltrace.cycles-pp.tlb_finish_mmu.exit_mmap.mmput.flush_old_exec.load_elf_binary 1.04 +0.3 1.32 ± 2% perf-profile.calltrace.cycles-pp.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.setlocale 0.89 +0.3 1.17 ± 3% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.exit_mmap.mmput.flush_old_exec 0.95 +0.3 1.25 ± 3% perf-profile.calltrace.cycles-pp.unmap_vmas.exit_mmap.mmput.flush_old_exec.load_elf_binary 1.15 +0.3 1.46 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.setlocale 4.73 +0.3 5.04 perf-profile.calltrace.cycles-pp.__handle_mm_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 1.15 +0.3 1.46 ± 2% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.setlocale 1.07 +0.3 1.39 perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64 1.09 ± 2% +0.3 1.42 perf-profile.calltrace.cycles-pp.ksys_mmap_pgoff.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64 1.11 ± 2% +0.3 1.45 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.mmap64 1.11 +0.3 1.44 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.mmap64 0.26 ±100% +0.3 0.60 perf-profile.calltrace.cycles-pp.copy_page_range.copy_process._do_fork.do_syscall_64.entry_SYSCALL_64_after_hwframe 4.85 +0.3 5.19 perf-profile.calltrace.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.39 ± 57% +0.4 0.74 ± 3% perf-profile.calltrace.cycles-pp.wait4 1.20 +0.4 1.56 perf-profile.calltrace.cycles-pp.mmap64 13.89 +0.4 14.25 perf-profile.calltrace.cycles-pp.load_elf_binary.search_binary_handler.__do_execve_file.__x64_sys_execve.do_syscall_64 13.91 +0.4 14.28 perf-profile.calltrace.cycles-pp.search_binary_handler.__do_execve_file.__x64_sys_execve.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.78 ± 2% +0.4 2.19 perf-profile.calltrace.cycles-pp.vfprintf.__vsnprintf_chk 0.55 ± 3% +0.4 0.99 ± 3% perf-profile.calltrace.cycles-pp.mmap_region.do_mmap.vm_mmap_pgoff.elf_map.load_elf_binary 0.60 ± 4% +0.5 1.06 ± 3% perf-profile.calltrace.cycles-pp.do_mmap.vm_mmap_pgoff.elf_map.load_elf_binary.search_binary_handler 0.66 ± 3% +0.5 1.12 ± 2% perf-profile.calltrace.cycles-pp.vm_mmap_pgoff.elf_map.load_elf_binary.search_binary_handler.__do_execve_file 5.43 +0.5 5.91 perf-profile.calltrace.cycles-pp.__do_page_fault.do_page_fault.page_fault 5.45 +0.5 5.92 perf-profile.calltrace.cycles-pp.do_page_fault.page_fault 0.00 +0.5 0.51 perf-profile.calltrace.cycles-pp.page_fault.setlocale 0.00 +0.5 0.51 ± 3% perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 5.58 +0.5 6.09 perf-profile.calltrace.cycles-pp.page_fault 0.00 +0.5 0.52 ± 4% perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork 0.00 +0.5 0.53 ± 2% perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 1.37 ± 2% +0.5 1.90 ± 5% perf-profile.calltrace.cycles-pp.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap.mmput.do_exit 1.38 ± 2% +0.5 1.90 ± 5% perf-profile.calltrace.cycles-pp.tlb_finish_mmu.exit_mmap.mmput.do_exit.do_group_exit 0.00 +0.5 0.53 ± 3% perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.00 +0.5 0.54 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 1.73 ± 2% +0.5 2.26 ± 3% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.exit_mmap.mmput.do_exit 0.00 +0.5 0.54 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write 0.00 +0.5 0.54 ± 3% perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 2.69 +0.5 3.24 perf-profile.calltrace.cycles-pp.__vsnprintf_chk 1.80 ± 2% +0.6 2.35 ± 3% perf-profile.calltrace.cycles-pp.unmap_vmas.exit_mmap.mmput.do_exit.do_group_exit 0.00 +0.6 0.56 ± 2% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.00 +0.6 0.56 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read 2.46 +0.6 3.03 ± 2% perf-profile.calltrace.cycles-pp.setlocale 0.00 +0.6 0.58 ± 3% perf-profile.calltrace.cycles-pp.write 0.00 +0.6 0.58 ± 2% perf-profile.calltrace.cycles-pp.do_faccessat.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.12 ±173% +0.6 0.71 ± 4% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.wait4 0.12 ±173% +0.6 0.71 ± 4% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait4 0.00 +0.6 0.61 ± 3% perf-profile.calltrace.cycles-pp.read 0.00 +0.6 0.61 ± 5% perf-profile.calltrace.cycles-pp.do_wait.kernel_wait4.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.62 ± 5% perf-profile.calltrace.cycles-pp.kernel_wait4.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait4 0.00 +0.6 0.63 ± 4% perf-profile.calltrace.cycles-pp.__do_sys_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.wait4 1.63 ± 2% +0.7 2.31 ± 5% perf-profile.calltrace.cycles-pp.release_pages.tlb_flush_mmu_free.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap 0.00 +0.7 0.74 ± 3% perf-profile.calltrace.cycles-pp.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.elf_map 0.12 ±173% +0.8 0.91 ± 3% perf-profile.calltrace.cycles-pp.do_munmap.vm_munmap.elf_map.load_elf_binary.search_binary_handler 2.05 ± 2% +0.8 2.84 ± 4% perf-profile.calltrace.cycles-pp.tlb_flush_mmu_free.arch_tlb_finish_mmu.tlb_finish_mmu.exit_mmap.mmput 0.13 ±173% +0.8 0.92 ± 4% perf-profile.calltrace.cycles-pp.vm_munmap.elf_map.load_elf_binary.search_binary_handler.__do_execve_file 15.67 +0.8 16.48 perf-profile.calltrace.cycles-pp.__do_execve_file.__x64_sys_execve.do_syscall_64.entry_SYSCALL_64_after_hwframe.execve 15.68 +0.8 16.50 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.execve 15.68 +0.8 16.50 perf-profile.calltrace.cycles-pp.__x64_sys_execve.do_syscall_64.entry_SYSCALL_64_after_hwframe.execve 15.68 +0.8 16.50 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.execve 15.71 +0.8 16.53 perf-profile.calltrace.cycles-pp.execve 1.16 ± 3% +0.9 2.05 ± 3% perf-profile.calltrace.cycles-pp.elf_map.load_elf_binary.search_binary_handler.__do_execve_file.__x64_sys_execve 42.48 -8.6 33.85 ± 3% perf-profile.children.cycles-pp.osq_lock 44.24 -8.5 35.76 ± 2% perf-profile.children.cycles-pp.rwsem_down_write_failed 44.25 -8.5 35.78 ± 2% perf-profile.children.cycles-pp.call_rwsem_down_write_failed 44.77 -8.4 36.37 ± 2% perf-profile.children.cycles-pp.down_write 22.58 -4.1 18.50 ± 2% perf-profile.children.cycles-pp.unlink_file_vma 24.10 -3.9 20.25 ± 2% perf-profile.children.cycles-pp.free_pgtables 13.81 -1.8 11.97 perf-profile.children.cycles-pp.ksys_mmap_pgoff 69.44 -1.8 67.68 perf-profile.children.cycles-pp.do_syscall_64 69.50 -1.8 67.74 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 10.31 ± 2% -1.5 8.80 ± 2% perf-profile.children.cycles-pp.__vma_adjust 13.93 -1.5 12.43 perf-profile.children.cycles-pp.mmap_region 10.40 -1.5 8.90 ± 2% perf-profile.children.cycles-pp.__split_vma 14.23 -1.4 12.80 perf-profile.children.cycles-pp.do_mmap 14.44 -1.4 13.06 perf-profile.children.cycles-pp.vm_mmap_pgoff 9.67 -1.3 8.35 ± 4% perf-profile.children.cycles-pp.cpuidle_enter_state 24.58 -1.3 23.26 perf-profile.children.cycles-pp.mmput 24.55 -1.3 23.24 perf-profile.children.cycles-pp.exit_mmap 9.44 -1.3 8.12 ± 4% perf-profile.children.cycles-pp.intel_idle 10.17 -1.3 8.86 ± 4% perf-profile.children.cycles-pp.secondary_startup_64 10.17 -1.3 8.86 ± 4% perf-profile.children.cycles-pp.cpu_startup_entry 10.17 -1.3 8.86 ± 4% perf-profile.children.cycles-pp.do_idle 10.04 -1.3 8.75 ± 3% perf-profile.children.cycles-pp.start_secondary 11.07 -1.2 9.82 perf-profile.children.cycles-pp.copy_process 8.02 ± 2% -1.2 6.80 ± 2% perf-profile.children.cycles-pp.mprotect_fixup 11.38 -1.2 10.18 perf-profile.children.cycles-pp._do_fork 8.10 ± 2% -1.2 6.90 ± 2% perf-profile.children.cycles-pp.do_mprotect_pkey 8.10 ± 2% -1.2 6.90 ± 2% perf-profile.children.cycles-pp.__x64_sys_mprotect 11.84 -1.1 10.77 perf-profile.children.cycles-pp.__libc_fork 11.51 -0.9 10.57 perf-profile.children.cycles-pp.flush_old_exec 8.20 -0.8 7.44 perf-profile.children.cycles-pp.do_munmap 5.36 -0.6 4.79 perf-profile.children.cycles-pp.unmap_region 5.70 ± 2% -0.5 5.21 perf-profile.children.cycles-pp.filemap_map_pages 5.81 -0.4 5.39 perf-profile.children.cycles-pp.vma_link 0.29 ± 3% -0.1 0.15 perf-profile.children.cycles-pp.radix_tree_next_chunk 0.39 ± 3% -0.0 0.36 perf-profile.children.cycles-pp.time 0.16 ± 4% -0.0 0.13 perf-profile.children.cycles-pp.find_busiest_group 0.30 -0.0 0.29 perf-profile.children.cycles-pp.load_balance 0.23 -0.0 0.21 ± 2% perf-profile.children.cycles-pp.__strcasecmp 0.17 -0.0 0.15 ± 3% perf-profile.children.cycles-pp.fopen 0.05 +0.0 0.06 perf-profile.children.cycles-pp.__put_task_struct 0.05 +0.0 0.06 perf-profile.children.cycles-pp.vm_brk_flags 0.05 +0.0 0.06 perf-profile.children.cycles-pp.__perf_event__output_id_sample 0.05 +0.0 0.06 perf-profile.children.cycles-pp.security_mmap_addr 0.05 +0.0 0.06 perf-profile.children.cycles-pp.selinux_file_open 0.06 +0.0 0.07 perf-profile.children.cycles-pp.__switch_to 0.07 ± 5% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.__x64_sys_pipe 0.07 ± 5% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.do_pipe2 0.07 ± 5% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.unmap_single_vma 0.07 +0.0 0.08 ± 5% perf-profile.children.cycles-pp.__errno_location 0.05 +0.0 0.06 ± 6% perf-profile.children.cycles-pp.mem_cgroup_throttle_swaprate 0.05 ± 8% +0.0 0.07 ± 7% perf-profile.children.cycles-pp.perf_event_task_output 0.05 ± 8% +0.0 0.07 ± 7% perf-profile.children.cycles-pp.load_elf_phdrs 0.17 ± 2% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.sched_ttwu_pending 0.06 ± 6% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.cpumask_next 0.06 +0.0 0.07 ± 5% perf-profile.children.cycles-pp.kfree 0.08 ± 6% +0.0 0.09 perf-profile.children.cycles-pp.do_signal 0.08 ± 6% +0.0 0.09 perf-profile.children.cycles-pp.memcpy 0.08 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.__pipe 0.08 +0.0 0.10 ± 5% perf-profile.children.cycles-pp.vfs_getattr 0.08 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.security_inode_getattr 0.08 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.avc_has_perm 0.07 ± 6% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.fsnotify 0.07 +0.0 0.09 ± 5% perf-profile.children.cycles-pp.__tsearch 0.07 ± 7% +0.0 0.08 perf-profile.children.cycles-pp.memchr 0.05 ± 8% +0.0 0.07 ± 6% perf-profile.children.cycles-pp.file_has_perm 0.05 ± 8% +0.0 0.07 ± 6% perf-profile.children.cycles-pp.__alloc_fd 0.05 +0.0 0.07 ± 7% perf-profile.children.cycles-pp.free_unref_page_commit 0.05 +0.0 0.07 ± 7% perf-profile.children.cycles-pp.up_read 0.29 +0.0 0.30 ± 2% perf-profile.children.cycles-pp.save_stack_trace_tsk 0.13 ± 3% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.pipe_wait 0.06 +0.0 0.08 ± 6% perf-profile.children.cycles-pp.__put_anon_vma 0.06 ± 11% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.wake_up_page_bit 0.05 ± 9% +0.0 0.07 perf-profile.children.cycles-pp.dup_fd 0.19 ± 2% +0.0 0.21 perf-profile.children.cycles-pp.dequeue_entity 0.10 ± 5% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.move_queued_task 0.10 ± 7% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.__list_add_valid 0.08 ± 6% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.find_next_bit 0.07 ± 5% +0.0 0.09 ± 7% perf-profile.children.cycles-pp.arch_dup_task_struct 0.11 +0.0 0.13 ± 3% perf-profile.children.cycles-pp.find_get_entry 0.07 ± 10% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.cp_new_stat 0.07 ± 7% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.load_new_mm_cr3 0.07 ± 7% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.set_next_entity 0.07 ± 6% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.__install_special_mapping 0.06 ± 6% +0.0 0.08 perf-profile.children.cycles-pp._IO_setb 0.07 ± 6% +0.0 0.09 ± 5% perf-profile.children.cycles-pp.trailing_symlink 0.06 ± 6% +0.0 0.08 perf-profile.children.cycles-pp.setup_new_exec 0.06 ± 6% +0.0 0.08 perf-profile.children.cycles-pp.perf_event_task 0.05 +0.0 0.07 ± 6% perf-profile.children.cycles-pp.__legitimize_mnt 0.05 ± 8% +0.0 0.07 perf-profile.children.cycles-pp.vma_gap_callbacks_rotate 0.05 +0.0 0.07 ± 6% perf-profile.children.cycles-pp.security_file_free 0.05 ± 8% +0.0 0.07 perf-profile.children.cycles-pp.down_write_killable 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.children.cycles-pp.available_idle_cpu 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.children.cycles-pp._vm_normal_page 0.08 ± 5% +0.0 0.10 perf-profile.children.cycles-pp.expand_downwards 0.06 ± 7% +0.0 0.08 ± 6% perf-profile.children.cycles-pp._copy_to_user 0.06 +0.0 0.08 ± 5% perf-profile.children.cycles-pp.__unlock_page_memcg 0.06 ± 7% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.security_file_alloc 0.17 ± 2% +0.0 0.19 ± 4% perf-profile.children.cycles-pp.osq_unlock 0.10 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.finish_fault 0.09 ± 4% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.may_open 0.09 ± 4% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.perf_output_copy 0.10 ± 4% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.selinux_mmap_file 0.07 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.try_charge 0.07 ± 5% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.___slab_alloc 0.08 ± 6% +0.0 0.10 ± 5% perf-profile.children.cycles-pp.__pthread_once_slow 0.07 +0.0 0.09 perf-profile.children.cycles-pp.move_page_tables 0.07 +0.0 0.09 perf-profile.children.cycles-pp.touch_atime 0.06 ± 6% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.queue_work_on 0.09 ± 7% +0.0 0.11 perf-profile.children.cycles-pp.filp_close 0.08 ± 8% +0.0 0.10 perf-profile.children.cycles-pp.selinux_vm_enough_memory 0.09 ± 4% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.sync_regs 0.08 +0.0 0.10 perf-profile.children.cycles-pp.__inode_security_revalidate 0.07 ± 6% +0.0 0.09 ± 4% perf-profile.children.cycles-pp.prepend_name 0.06 ± 6% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.complete_walk 0.06 +0.0 0.08 ± 8% perf-profile.children.cycles-pp.unlock_page_memcg 0.06 ± 11% +0.0 0.08 perf-profile.children.cycles-pp.cred_has_capability 0.06 +0.0 0.08 perf-profile.children.cycles-pp.security_file_open 0.06 +0.0 0.08 perf-profile.children.cycles-pp.__queue_work 0.05 ± 8% +0.0 0.07 ± 11% perf-profile.children.cycles-pp.copyin 0.06 ± 9% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.entry_SYSCALL_64_stage2 0.06 ± 9% +0.0 0.08 ± 6% perf-profile.children.cycles-pp.simple_write_begin 0.06 ± 7% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.security_file_permission 0.14 ± 5% +0.0 0.16 ± 2% perf-profile.children.cycles-pp.switch_mm_irqs_off 0.13 +0.0 0.15 ± 2% perf-profile.children.cycles-pp.__anon_vma_prepare 0.10 ± 7% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.migration_cpu_stop 0.09 ± 7% +0.0 0.11 ± 3% perf-profile.children.cycles-pp._IO_file_close 0.09 +0.0 0.11 ± 3% perf-profile.children.cycles-pp.__call_rcu 0.07 +0.0 0.09 ± 4% perf-profile.children.cycles-pp.kmem_cache_alloc_trace 0.11 ± 4% +0.0 0.13 perf-profile.children.cycles-pp.do_brk_flags 0.10 ± 8% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.prepare_creds 0.09 +0.0 0.11 ± 3% perf-profile.children.cycles-pp.put_task_stack 0.08 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.__slab_alloc 0.09 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.__x64_sys_brk 0.08 ± 5% +0.0 0.10 perf-profile.children.cycles-pp.map_vdso 0.11 ± 7% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.get_zeroed_page 0.08 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.anon_vma_interval_tree_remove 0.12 ± 3% +0.0 0.15 ± 2% perf-profile.children.cycles-pp.__libc_sigaction 0.11 ± 4% +0.0 0.13 ± 5% perf-profile.children.cycles-pp.cpu_stopper_thread 0.10 ± 5% +0.0 0.12 ± 5% perf-profile.children.cycles-pp.prepare_binprm 0.09 +0.0 0.11 ± 4% perf-profile.children.cycles-pp.__d_alloc 0.09 ± 4% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.simple_lookup 0.08 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.vm_area_alloc 0.04 ± 57% +0.0 0.06 ± 6% perf-profile.children.cycles-pp.alloc_pid 0.11 ± 4% +0.0 0.13 ± 3% perf-profile.children.cycles-pp.brk 0.08 ± 5% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.memset_erms 0.11 ± 3% +0.0 0.14 ± 6% perf-profile.children.cycles-pp.__get_user_8 0.09 ± 5% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.evict 0.15 ± 3% +0.0 0.17 ± 2% perf-profile.children.cycles-pp.avc_has_perm_noaudit 0.13 ± 3% +0.0 0.15 ± 3% perf-profile.children.cycles-pp.sched_move_task 0.11 ± 7% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.__dentry_kill 0.10 ± 4% +0.0 0.13 ± 5% perf-profile.children.cycles-pp.unmapped_area_topdown 0.10 ± 4% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.__snprintf_chk 0.09 ± 4% +0.0 0.11 ± 7% perf-profile.children.cycles-pp.select_idle_sibling 0.08 ± 5% +0.0 0.11 ± 8% perf-profile.children.cycles-pp.lockref_get_not_dead 0.07 +0.0 0.10 ± 4% perf-profile.children.cycles-pp.d_add 0.04 ± 57% +0.0 0.07 ± 7% perf-profile.children.cycles-pp.do_huge_pmd_anonymous_page 0.11 +0.0 0.14 ± 3% perf-profile.children.cycles-pp.fput 0.11 ± 6% +0.0 0.14 ± 3% perf-profile.children.cycles-pp._exit 0.12 ± 6% +0.0 0.15 ± 5% perf-profile.children.cycles-pp.security_vm_enough_memory_mm 0.12 ± 3% +0.0 0.15 ± 2% perf-profile.children.cycles-pp.free_pgd_range 0.11 ± 4% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.vm_area_dup 0.10 ± 7% +0.0 0.13 perf-profile.children.cycles-pp.vma_interval_tree_augment_rotate 0.10 ± 5% +0.0 0.12 ± 4% perf-profile.children.cycles-pp.rcu_all_qs 0.09 ± 4% +0.0 0.12 ± 3% perf-profile.children.cycles-pp.munmap 0.08 ± 6% +0.0 0.11 ± 4% perf-profile.children.cycles-pp.__mmdrop 0.07 ± 6% +0.0 0.10 ± 4% perf-profile.children.cycles-pp.truncate_inode_pages_range 0.04 ± 57% +0.0 0.07 ± 6% perf-profile.children.cycles-pp.grab_cache_page_write_begin 0.12 ± 3% +0.0 0.15 ± 2% perf-profile.children.cycles-pp.__lru_cache_add 0.11 ± 4% +0.0 0.15 ± 3% perf-profile.children.cycles-pp.prepend_path 0.14 ± 3% +0.0 0.17 ± 6% perf-profile.children.cycles-pp.security_mmap_file 0.14 ± 3% +0.0 0.17 ± 7% perf-profile.children.cycles-pp.mem_cgroup_try_charge 0.12 ± 3% +0.0 0.15 ± 9% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.13 +0.0 0.16 ± 2% perf-profile.children.cycles-pp.lockref_put_or_lock 0.14 ± 6% +0.0 0.17 ± 4% perf-profile.children.cycles-pp.kernel_read 0.12 ± 3% +0.0 0.15 ± 3% perf-profile.children.cycles-pp.__put_user_4 0.09 +0.0 0.12 ± 8% perf-profile.children.cycles-pp.file_free_rcu 0.11 ± 4% +0.0 0.15 ± 5% perf-profile.children.cycles-pp.__x64_sys_close 0.20 ± 3% +0.0 0.23 ± 2% perf-profile.children.cycles-pp.update_load_avg 0.16 +0.0 0.20 ± 5% perf-profile.children.cycles-pp.vfs_statx_fd 0.17 ± 3% +0.0 0.20 ± 3% perf-profile.children.cycles-pp.d_path 0.15 ± 3% +0.0 0.19 ± 3% perf-profile.children.cycles-pp.stop_one_cpu 0.16 +0.0 0.20 ± 2% perf-profile.children.cycles-pp.anon_vma_clone 0.16 ± 2% +0.0 0.20 ± 2% perf-profile.children.cycles-pp.vma_compute_subtree_gap 0.16 ± 2% +0.0 0.20 ± 2% perf-profile.children.cycles-pp.getenv 0.15 ± 2% +0.0 0.18 ± 2% perf-profile.children.cycles-pp._init 0.14 ± 5% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.__pud_alloc 0.12 ± 4% +0.0 0.16 ± 4% perf-profile.children.cycles-pp.__getrlimit 0.09 +0.0 0.12 ± 4% perf-profile.children.cycles-pp.wake_q_add 0.30 ± 2% +0.0 0.34 ± 3% perf-profile.children.cycles-pp.strchrnul 0.18 ± 2% +0.0 0.21 ± 3% perf-profile.children.cycles-pp.open_exec 0.14 +0.0 0.18 ± 2% perf-profile.children.cycles-pp.shift_arg_pages 0.14 ± 5% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.preempt_schedule_common 0.19 ± 4% +0.0 0.23 perf-profile.children.cycles-pp.getname_flags 0.17 ± 4% +0.0 0.21 ± 2% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown 0.14 ± 3% +0.0 0.18 ± 5% perf-profile.children.cycles-pp.__might_fault 0.15 ± 2% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.perf_event_mmap_output 0.13 ± 6% +0.0 0.17 ± 5% perf-profile.children.cycles-pp.dentry_kill 0.13 ± 5% +0.0 0.17 ± 4% perf-profile.children.cycles-pp.copy_user_generic_unrolled 0.13 ± 3% +0.0 0.17 ± 3% perf-profile.children.cycles-pp.do_unlinkat 0.11 +0.0 0.15 ± 2% perf-profile.children.cycles-pp.inode_permission 0.14 ± 5% +0.0 0.18 perf-profile.children.cycles-pp.free_pcppages_bulk 0.08 +0.0 0.12 ± 11% perf-profile.children.cycles-pp.rcu_cblist_dequeue 0.23 ± 2% +0.0 0.27 ± 4% perf-profile.children.cycles-pp.ptep_clear_flush 0.18 ± 4% +0.0 0.22 perf-profile.children.cycles-pp.change_protection_range 0.16 ± 2% +0.0 0.20 ± 4% perf-profile.children.cycles-pp.memcpy_erms 0.15 ± 3% +0.0 0.20 ± 4% perf-profile.children.cycles-pp.pagecache_get_page 0.14 ± 3% +0.0 0.18 ± 4% perf-profile.children.cycles-pp.legitimize_path 0.39 ± 2% +0.0 0.43 ± 3% perf-profile.children.cycles-pp.malloc 0.54 +0.0 0.58 perf-profile.children.cycles-pp.ttwu_do_activate 0.25 ± 3% +0.0 0.29 perf-profile.children.cycles-pp.dequeue_task_fair 0.19 ± 2% +0.0 0.23 ± 3% perf-profile.children.cycles-pp._copy_from_user 0.18 ± 2% +0.0 0.22 ± 3% perf-profile.children.cycles-pp.vmacache_find 0.18 ± 2% +0.0 0.22 perf-profile.children.cycles-pp.open64 0.14 ± 3% +0.0 0.18 perf-profile.children.cycles-pp.lock_page_memcg 0.01 ±173% +0.0 0.05 ± 9% perf-profile.children.cycles-pp.__follow_mount_rcu 0.21 ± 6% +0.0 0.26 ± 3% perf-profile.children.cycles-pp._IO_file_xsputn 0.17 ± 3% +0.0 0.21 ± 3% perf-profile.children.cycles-pp.signal_wake_up_state 0.14 ± 3% +0.0 0.18 ± 3% perf-profile.children.cycles-pp.count 0.13 ± 3% +0.0 0.18 ± 2% perf-profile.children.cycles-pp.unlinkat 0.11 ± 7% +0.0 0.15 ± 9% perf-profile.children.cycles-pp.__get_vm_area_node 0.09 ± 4% +0.0 0.14 ± 13% perf-profile.children.cycles-pp.alloc_vmap_area 0.20 ± 2% +0.0 0.24 ± 3% perf-profile.children.cycles-pp.__vma_link_rb 0.17 ± 2% +0.0 0.21 ± 3% perf-profile.children.cycles-pp.schedule_tail 0.14 ± 3% +0.0 0.19 ± 4% perf-profile.children.cycles-pp.__rb_erase_color 0.01 ±173% +0.0 0.06 ± 7% perf-profile.children.cycles-pp.insert_vm_struct 0.01 ±173% +0.0 0.06 ± 7% perf-profile.children.cycles-pp.put_prev_entity 0.19 ± 2% +0.0 0.24 ± 2% perf-profile.children.cycles-pp.copy_strings_kernel 0.19 ± 2% +0.0 0.24 ± 5% perf-profile.children.cycles-pp.setup_arg_pages 0.17 ± 4% +0.0 0.22 perf-profile.children.cycles-pp.__pmd_alloc 0.15 ± 3% +0.0 0.19 ± 5% perf-profile.children.cycles-pp.unlazy_walk 0.14 ± 5% +0.0 0.19 ± 4% perf-profile.children.cycles-pp.__get_free_pages 0.01 ±173% +0.0 0.06 perf-profile.children.cycles-pp.__free_pages_ok 0.15 +0.0 0.20 ± 4% perf-profile.children.cycles-pp.mark_page_accessed 0.15 ± 2% +0.0 0.20 ± 3% perf-profile.children.cycles-pp.d_alloc 0.57 +0.0 0.61 perf-profile.children.cycles-pp.enqueue_entity 0.23 +0.0 0.28 ± 4% perf-profile.children.cycles-pp.__do_sys_newfstat 0.16 ± 5% +0.0 0.21 ± 6% perf-profile.children.cycles-pp.__generic_file_write_iter 0.15 ± 7% +0.0 0.20 ± 5% perf-profile.children.cycles-pp.generic_perform_write 0.00 +0.1 0.05 perf-profile.children.cycles-pp.vma_merge 0.00 +0.1 0.05 perf-profile.children.cycles-pp.free_one_page 0.00 +0.1 0.05 perf-profile.children.cycles-pp.rcu_segcblist_enqueue 0.00 +0.1 0.05 perf-profile.children.cycles-pp.__fget_light 0.17 ± 7% +0.1 0.22 ± 5% perf-profile.children.cycles-pp.generic_file_write_iter 0.24 ± 2% +0.1 0.30 ± 3% perf-profile.children.cycles-pp.anon_vma_fork 0.19 ± 3% +0.1 0.24 ± 4% perf-profile.children.cycles-pp.mem_cgroup_try_charge_delay 0.19 +0.1 0.24 ± 3% perf-profile.children.cycles-pp.finish_task_switch 0.18 ± 2% +0.1 0.24 ± 3% perf-profile.children.cycles-pp.__send_signal 0.18 ± 2% +0.1 0.23 ± 2% perf-profile.children.cycles-pp.__pagevec_lru_add_fn 0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.__pagevec_release 0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.__perf_event_header__init_id 0.00 +0.1 0.05 ± 8% perf-profile.children.cycles-pp.check_preempt_curr 0.21 ± 2% +0.1 0.27 ± 5% perf-profile.children.cycles-pp.autoremove_wake_function 0.21 ± 3% +0.1 0.27 ± 3% perf-profile.children.cycles-pp.generic_file_read_iter 0.30 ± 2% +0.1 0.36 ± 3% perf-profile.children.cycles-pp.wake_up_new_task 0.25 +0.1 0.30 perf-profile.children.cycles-pp.get_unmapped_area 0.19 ± 3% +0.1 0.24 ± 4% perf-profile.children.cycles-pp.get_user_arg_ptr 0.17 ± 2% +0.1 0.22 ± 3% perf-profile.children.cycles-pp.pgd_alloc 0.00 +0.1 0.05 ± 9% perf-profile.children.cycles-pp.page_add_new_anon_rmap 0.21 ± 2% +0.1 0.26 ± 4% perf-profile.children.cycles-pp.__might_sleep 0.31 +0.1 0.36 perf-profile.children.cycles-pp.native_flush_tlb_one_user 0.26 ± 3% +0.1 0.31 ± 2% perf-profile.children.cycles-pp.do_open_execat 0.20 ± 4% +0.1 0.25 ± 7% perf-profile.children.cycles-pp.__vmalloc_node_range 0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.__mod_node_page_state 0.00 +0.1 0.06 ± 7% perf-profile.children.cycles-pp.anon_vma_interval_tree_insert 0.22 +0.1 0.28 ± 4% perf-profile.children.cycles-pp.__wake_up_common_lock 0.22 ± 3% +0.1 0.28 ± 4% perf-profile.children.cycles-pp.do_notify_parent 0.28 ± 2% +0.1 0.34 ± 5% perf-profile.children.cycles-pp.__rb_insert_augmented 0.23 ± 2% +0.1 0.29 perf-profile.children.cycles-pp.strlen 0.19 ± 2% +0.1 0.25 ± 5% perf-profile.children.cycles-pp.copyout 0.19 ± 4% +0.1 0.25 ± 3% perf-profile.children.cycles-pp.mm_init 0.64 +0.1 0.70 perf-profile.children.cycles-pp.enqueue_task_fair 0.29 ± 2% +0.1 0.35 ± 3% perf-profile.children.cycles-pp.___perf_sw_event 0.24 ± 2% +0.1 0.30 ± 3% perf-profile.children.cycles-pp.terminate_walk 0.26 ± 3% +0.1 0.33 perf-profile.children.cycles-pp.free_unref_page_list 0.23 +0.1 0.30 ± 5% perf-profile.children.cycles-pp.__wake_up_common 0.32 +0.1 0.38 perf-profile.children.cycles-pp.__perf_sw_event 0.28 ± 2% +0.1 0.35 ± 4% perf-profile.children.cycles-pp.get_user_pages_remote 0.25 ± 2% +0.1 0.32 ± 4% perf-profile.children.cycles-pp.pipe_write 0.22 ± 3% +0.1 0.29 ± 5% perf-profile.children.cycles-pp.copy_page_to_iter 0.23 ± 2% +0.1 0.29 ± 2% perf-profile.children.cycles-pp._IO_file_open 0.32 ± 3% +0.1 0.38 ± 2% perf-profile.children.cycles-pp._fini 0.28 +0.1 0.34 ± 4% perf-profile.children.cycles-pp.__get_user_pages 0.34 ± 2% +0.1 0.41 perf-profile.children.cycles-pp.unlock_page 0.30 ± 2% +0.1 0.36 ± 4% perf-profile.children.cycles-pp.__pte_alloc 0.32 +0.1 0.39 perf-profile.children.cycles-pp.vma_interval_tree_remove 0.29 ± 2% +0.1 0.36 ± 3% perf-profile.children.cycles-pp.pipe_read 0.23 +0.1 0.30 ± 2% perf-profile.children.cycles-pp.do_dentry_open 0.10 ± 5% +0.1 0.16 ± 10% perf-profile.children.cycles-pp.run_ksoftirqd 0.22 ± 3% +0.1 0.29 ± 3% perf-profile.children.cycles-pp.d_alloc_parallel 0.39 +0.1 0.46 ± 3% perf-profile.children.cycles-pp.__fxstat64 0.34 +0.1 0.41 perf-profile.children.cycles-pp.flush_tlb_func_common 0.27 ± 3% +0.1 0.34 ± 3% perf-profile.children.cycles-pp.__d_lookup_rcu 0.34 ± 2% +0.1 0.41 ± 2% perf-profile.children.cycles-pp._IO_padn 0.16 ± 2% +0.1 0.23 ± 3% perf-profile.children.cycles-pp.release_task 0.24 +0.1 0.31 ± 3% perf-profile.children.cycles-pp.__lookup_slow 0.00 +0.1 0.07 ± 11% perf-profile.children.cycles-pp.do_prlimit 0.32 +0.1 0.40 ± 2% perf-profile.children.cycles-pp.selinux_inode_permission 0.39 ± 2% +0.1 0.46 ± 2% perf-profile.children.cycles-pp.find_vma 0.00 +0.1 0.08 ± 6% perf-profile.children.cycles-pp.__x64_sys_getrlimit 0.59 +0.1 0.67 ± 2% perf-profile.children.cycles-pp.schedule 0.28 +0.1 0.36 ± 2% perf-profile.children.cycles-pp.__list_del_entry_valid 0.35 ± 2% +0.1 0.42 ± 2% perf-profile.children.cycles-pp.security_inode_permission 0.32 ± 3% +0.1 0.40 ± 3% perf-profile.children.cycles-pp.__do_sys_newstat 0.27 ± 3% +0.1 0.35 ± 2% perf-profile.children.cycles-pp.lookup_slow 0.33 ± 2% +0.1 0.41 ± 2% perf-profile.children.cycles-pp._cond_resched 0.32 +0.1 0.40 ± 3% perf-profile.children.cycles-pp.remove_vma 0.30 ± 2% +0.1 0.39 ± 2% perf-profile.children.cycles-pp.perf_iterate_sb 0.13 ± 5% +0.1 0.21 ± 14% perf-profile.children.cycles-pp.find_vmap_area 0.33 ± 3% +0.1 0.41 ± 3% perf-profile.children.cycles-pp.vfs_statx 0.39 ± 2% +0.1 0.47 ± 2% perf-profile.children.cycles-pp._IO_fwrite 0.29 ± 2% +0.1 0.38 ± 3% perf-profile.children.cycles-pp.exit_to_usermode_loop 0.18 ± 8% +0.1 0.27 ± 12% perf-profile.children.cycles-pp.__vunmap 0.43 +0.1 0.52 ± 2% perf-profile.children.cycles-pp.flush_tlb_mm_range 0.37 ± 3% +0.1 0.46 ± 4% perf-profile.children.cycles-pp.___might_sleep 0.40 ± 3% +0.1 0.49 ± 2% perf-profile.children.cycles-pp.__slab_free 0.29 +0.1 0.38 ± 2% perf-profile.children.cycles-pp.create_elf_tables 0.18 ± 7% +0.1 0.27 ± 10% perf-profile.children.cycles-pp.free_work 0.37 ± 2% +0.1 0.46 perf-profile.children.cycles-pp.swapgs_restore_regs_and_return_to_usermode 0.18 ± 4% +0.1 0.28 ± 4% perf-profile.children.cycles-pp.wait_consider_task 0.39 ± 2% +0.1 0.48 ± 3% perf-profile.children.cycles-pp.__xstat64 0.39 +0.1 0.48 ± 2% perf-profile.children.cycles-pp.pte_alloc_one 0.29 ± 2% +0.1 0.39 ± 2% perf-profile.children.cycles-pp.__alloc_file 0.40 ± 2% +0.1 0.49 ± 2% perf-profile.children.cycles-pp.unlink_anon_vmas 0.32 ± 2% +0.1 0.41 ± 3% perf-profile.children.cycles-pp.alloc_empty_file 0.44 +0.1 0.54 perf-profile.children.cycles-pp.page_add_file_rmap 0.41 ± 2% +0.1 0.51 ± 2% perf-profile.children.cycles-pp.sched_exec 0.39 +0.1 0.48 perf-profile.children.cycles-pp.copy_page 0.31 ± 3% +0.1 0.41 ± 3% perf-profile.children.cycles-pp.copy_user_enhanced_fast_string 0.52 +0.1 0.62 ± 3% perf-profile.children.cycles-pp.native_irq_return_iret 0.20 ± 6% +0.1 0.30 ± 9% perf-profile.children.cycles-pp.process_one_work 0.36 ± 2% +0.1 0.47 ± 3% perf-profile.children.cycles-pp.__fput 0.51 +0.1 0.62 ± 2% perf-profile.children.cycles-pp.copy_page_range 0.40 ± 2% +0.1 0.50 ± 3% perf-profile.children.cycles-pp.__clear_user 0.36 ± 2% +0.1 0.47 perf-profile.children.cycles-pp.__x64_sys_munmap 0.35 +0.1 0.46 perf-profile.children.cycles-pp.strnlen_user 0.23 ± 5% +0.1 0.34 ± 9% perf-profile.children.cycles-pp.worker_thread 0.48 ± 2% +0.1 0.59 ± 2% perf-profile.children.cycles-pp.syscall_return_via_sysret 0.40 ± 2% +0.1 0.51 ± 3% perf-profile.children.cycles-pp.dput 0.44 +0.1 0.55 ± 4% perf-profile.children.cycles-pp.lookup_fast 1.14 +0.1 1.25 ± 4% perf-profile.children.cycles-pp.__softirqentry_text_start 0.42 ± 2% +0.1 0.54 ± 2% perf-profile.children.cycles-pp.free_pages_and_swap_cache 1.08 ± 2% +0.1 1.20 ± 2% perf-profile.children.cycles-pp.__sched_text_start 0.51 +0.1 0.63 ± 2% perf-profile.children.cycles-pp.ksys_read 0.40 +0.1 0.52 ± 4% perf-profile.children.cycles-pp.smpboot_thread_fn 0.46 +0.1 0.58 ± 3% perf-profile.children.cycles-pp.write 0.49 +0.1 0.62 ± 3% perf-profile.children.cycles-pp.read 0.42 ± 2% +0.1 0.55 ± 3% perf-profile.children.cycles-pp.__vfs_write 0.44 +0.1 0.57 ± 2% perf-profile.children.cycles-pp.task_work_run 0.99 ± 2% +0.1 1.12 ± 4% perf-profile.children.cycles-pp.rcu_process_callbacks 0.55 ± 2% +0.1 0.67 ± 2% perf-profile.children.cycles-pp.kmem_cache_free 0.54 +0.1 0.66 ± 3% perf-profile.children.cycles-pp.__vfs_read 0.62 +0.1 0.75 ± 3% perf-profile.children.cycles-pp.select_task_rq_fair 0.46 +0.1 0.59 ± 4% perf-profile.children.cycles-pp.vfs_write 0.45 ± 2% +0.1 0.58 ± 2% perf-profile.children.cycles-pp.do_faccessat 0.47 +0.1 0.60 ± 3% perf-profile.children.cycles-pp.ksys_write 0.15 ± 6% +0.1 0.28 ± 7% perf-profile.children.cycles-pp.queued_write_lock_slowpath 0.14 ± 8% +0.1 0.27 ± 9% perf-profile.children.cycles-pp.queued_read_lock_slowpath 0.51 ± 3% +0.1 0.65 perf-profile.children.cycles-pp.kmem_cache_alloc 0.58 +0.1 0.72 ± 2% perf-profile.children.cycles-pp.__entry_SYSCALL_64_trampoline 0.62 +0.1 0.77 perf-profile.children.cycles-pp.vfs_read 0.63 +0.2 0.78 ± 2% perf-profile.children.cycles-pp.perf_event_mmap 0.62 +0.2 0.77 ± 2% perf-profile.children.cycles-pp.alloc_pages_vma 0.35 ± 4% +0.2 0.51 ± 4% perf-profile.children.cycles-pp.lru_add_drain 0.35 ± 3% +0.2 0.52 ± 5% perf-profile.children.cycles-pp.lru_add_drain_cpu 0.60 ± 2% +0.2 0.78 ± 2% perf-profile.children.cycles-pp.path_lookupat 0.62 ± 2% +0.2 0.80 ± 2% perf-profile.children.cycles-pp.filename_lookup 0.43 ± 2% +0.2 0.61 ± 3% perf-profile.children.cycles-pp.pagevec_lru_move_fn 0.64 +0.2 0.83 ± 3% perf-profile.children.cycles-pp.walk_component 0.75 ± 2% +0.2 0.95 ± 2% perf-profile.children.cycles-pp._IO_default_xsputn 0.86 +0.2 1.07 ± 3% perf-profile.children.cycles-pp.clear_page_erms 0.84 +0.2 1.04 ± 3% perf-profile.children.cycles-pp.copy_strings 0.41 ± 4% +0.2 0.62 ± 5% perf-profile.children.cycles-pp.do_wait 0.43 ± 5% +0.2 0.64 ± 5% perf-profile.children.cycles-pp.__do_sys_wait4 0.42 ± 4% +0.2 0.64 ± 5% perf-profile.children.cycles-pp.kernel_wait4 0.95 ± 2% +0.2 1.16 perf-profile.children.cycles-pp._dl_addr 0.95 +0.2 1.17 ± 2% perf-profile.children.cycles-pp.wp_page_copy 0.80 +0.2 1.02 ± 2% perf-profile.children.cycles-pp.link_path_walk 0.93 +0.2 1.16 perf-profile.children.cycles-pp.vma_interval_tree_insert 0.95 +0.2 1.18 perf-profile.children.cycles-pp.alloc_set_pte 0.51 ± 3% +0.2 0.74 ± 3% perf-profile.children.cycles-pp.wait4 0.63 ± 2% +0.2 0.87 ± 4% perf-profile.children.cycles-pp.kthread 1.04 +0.2 1.27 ± 2% perf-profile.children.cycles-pp.do_wp_page 1.29 +0.2 1.54 ± 3% perf-profile.children.cycles-pp.wake_up_q 2.06 +0.3 2.33 ± 2% perf-profile.children.cycles-pp.up_write 9.02 +0.3 9.29 perf-profile.children.cycles-pp.handle_mm_fault 1.53 +0.3 1.79 ± 2% perf-profile.children.cycles-pp.rwsem_wake 0.81 +0.3 1.08 ± 3% perf-profile.children.cycles-pp.ret_from_fork 1.53 +0.3 1.81 ± 2% perf-profile.children.cycles-pp.call_rwsem_wake 1.10 +0.3 1.38 ± 2% perf-profile.children.cycles-pp.__strcoll_l 0.81 ± 2% +0.3 1.08 ± 4% perf-profile.children.cycles-pp._raw_spin_lock 0.93 +0.3 1.23 perf-profile.children.cycles-pp.rwsem_spin_on_owner 1.24 +0.3 1.54 ± 3% perf-profile.children.cycles-pp.get_page_from_freelist 1.35 +0.3 1.69 ± 3% perf-profile.children.cycles-pp.__alloc_pages_nodemask 1.68 +0.4 2.04 ± 3% perf-profile.children.cycles-pp.try_to_wake_up 1.22 +0.4 1.58 perf-profile.children.cycles-pp.mmap64 14.16 +0.4 14.53 perf-profile.children.cycles-pp.load_elf_binary 1.05 ± 2% +0.4 1.42 ± 4% perf-profile.children.cycles-pp.page_remove_rmap 14.19 +0.4 14.56 perf-profile.children.cycles-pp.search_binary_handler 2.09 ± 2% +0.4 2.52 perf-profile.children.cycles-pp.vfprintf 9.80 +0.5 10.26 perf-profile.children.cycles-pp.__do_page_fault 9.82 +0.5 10.29 perf-profile.children.cycles-pp.do_page_fault 1.27 ± 2% +0.5 1.79 ± 5% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 1.96 +0.5 2.49 ± 2% perf-profile.children.cycles-pp.path_openat 2.01 +0.5 2.54 perf-profile.children.cycles-pp.do_sys_open 1.98 +0.5 2.52 ± 2% perf-profile.children.cycles-pp.do_filp_open 0.86 ± 2% +0.5 1.40 ± 2% perf-profile.children.cycles-pp.vm_munmap 10.22 +0.6 10.78 perf-profile.children.cycles-pp.page_fault 2.73 +0.6 3.29 perf-profile.children.cycles-pp.__vsnprintf_chk 2.76 +0.6 3.39 ± 2% perf-profile.children.cycles-pp.setlocale 1.77 ± 2% +0.7 2.50 ± 4% perf-profile.children.cycles-pp.release_pages 1.47 +0.8 2.27 ± 6% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 2.12 ± 2% +0.8 2.93 ± 4% perf-profile.children.cycles-pp.tlb_flush_mmu_free 15.71 +0.8 16.53 perf-profile.children.cycles-pp.execve 16.01 +0.8 16.84 perf-profile.children.cycles-pp.__do_execve_file 16.02 +0.8 16.86 perf-profile.children.cycles-pp.__x64_sys_execve 2.24 ± 2% +0.8 3.09 ± 4% perf-profile.children.cycles-pp.arch_tlb_finish_mmu 2.25 ± 2% +0.8 3.10 ± 4% perf-profile.children.cycles-pp.tlb_finish_mmu 2.77 +0.9 3.62 ± 3% perf-profile.children.cycles-pp.unmap_page_range 2.89 +0.9 3.77 ± 3% perf-profile.children.cycles-pp.unmap_vmas 1.18 ± 3% +0.9 2.09 ± 2% perf-profile.children.cycles-pp.elf_map 41.69 -8.5 33.23 ± 3% perf-profile.self.cycles-pp.osq_lock 9.44 -1.3 8.12 ± 4% perf-profile.self.cycles-pp.intel_idle 4.14 ± 2% -0.6 3.53 perf-profile.self.cycles-pp.filemap_map_pages 0.54 ± 2% -0.2 0.37 perf-profile.self.cycles-pp.rwsem_down_write_failed 0.28 ± 3% -0.1 0.15 ± 2% perf-profile.self.cycles-pp.radix_tree_next_chunk 0.13 ± 6% -0.0 0.11 ± 4% perf-profile.self.cycles-pp.find_busiest_group 0.05 +0.0 0.06 perf-profile.self.cycles-pp.anon_vma_fork 0.05 +0.0 0.06 perf-profile.self.cycles-pp.__call_rcu 0.05 +0.0 0.06 perf-profile.self.cycles-pp.__unlock_page_memcg 0.06 +0.0 0.07 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 0.06 +0.0 0.07 perf-profile.self.cycles-pp.do_wp_page 0.06 +0.0 0.07 perf-profile.self.cycles-pp.kfree 0.06 +0.0 0.07 perf-profile.self.cycles-pp.__switch_to 0.07 ± 5% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.find_next_bit 0.07 +0.0 0.08 ± 5% perf-profile.self.cycles-pp.__tsearch 0.05 ± 8% +0.0 0.07 ± 7% perf-profile.self.cycles-pp.path_openat 0.05 +0.0 0.06 ± 6% perf-profile.self.cycles-pp.d_alloc_parallel 0.05 +0.0 0.06 ± 6% perf-profile.self.cycles-pp.unlock_page_memcg 0.05 +0.0 0.06 ± 6% perf-profile.self.cycles-pp.up_read 0.06 +0.0 0.07 ± 5% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore 0.06 ± 6% +0.0 0.08 ± 6% perf-profile.self.cycles-pp.__perf_sw_event 0.06 ± 7% +0.0 0.07 perf-profile.self.cycles-pp.strncpy_from_user 0.09 ± 4% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.update_load_avg 0.07 +0.0 0.09 ± 5% perf-profile.self.cycles-pp.find_get_entry 0.05 +0.0 0.07 ± 7% perf-profile.self.cycles-pp.__d_alloc 0.05 ± 9% +0.0 0.07 perf-profile.self.cycles-pp.create_elf_tables 0.17 ± 3% +0.0 0.18 ± 2% perf-profile.self.cycles-pp.osq_unlock 0.07 ± 11% +0.0 0.09 perf-profile.self.cycles-pp.__alloc_pages_nodemask 0.07 ± 5% +0.0 0.09 perf-profile.self.cycles-pp.getenv 0.07 ± 11% +0.0 0.09 perf-profile.self.cycles-pp._vm_normal_page 0.11 ± 7% +0.0 0.12 ± 4% perf-profile.self.cycles-pp.__sched_text_start 0.09 ± 4% +0.0 0.11 ± 6% perf-profile.self.cycles-pp._cond_resched 0.09 ± 4% +0.0 0.11 perf-profile.self.cycles-pp.__list_add_valid 0.08 ± 5% +0.0 0.10 perf-profile.self.cycles-pp.perf_iterate_sb 0.07 ± 7% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.__vma_adjust 0.08 ± 8% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.sync_regs 0.07 ± 7% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.load_new_mm_cr3 0.06 ± 6% +0.0 0.08 perf-profile.self.cycles-pp._IO_setb 0.05 +0.0 0.07 ± 6% perf-profile.self.cycles-pp.__legitimize_mnt 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.__libc_fork 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.change_protection_range 0.06 +0.0 0.08 ± 5% perf-profile.self.cycles-pp.memchr 0.08 ± 6% +0.0 0.10 ± 5% perf-profile.self.cycles-pp.anon_vma_interval_tree_remove 0.07 ± 12% +0.0 0.09 ± 9% perf-profile.self.cycles-pp.try_charge 0.08 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.inode_permission 0.07 +0.0 0.09 perf-profile.self.cycles-pp.avc_has_perm 0.08 +0.0 0.10 ± 7% perf-profile.self.cycles-pp.free_pgd_range 0.07 ± 7% +0.0 0.09 ± 5% perf-profile.self.cycles-pp.prepend_name 0.05 ± 8% +0.0 0.07 ± 5% perf-profile.self.cycles-pp.entry_SYSCALL_64_stage2 0.08 ± 10% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.available_idle_cpu 0.10 ± 8% +0.0 0.12 ± 4% perf-profile.self.cycles-pp.unlink_anon_vmas 0.10 ± 7% +0.0 0.12 ± 6% perf-profile.self.cycles-pp.copy_user_generic_unrolled 0.08 ± 8% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.memset_erms 0.07 ± 5% +0.0 0.10 ± 5% perf-profile.self.cycles-pp.rcu_all_qs 0.08 ± 6% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.lockref_get_not_dead 0.06 ± 9% +0.0 0.08 ± 5% perf-profile.self.cycles-pp.memcpy 0.08 ± 5% +0.0 0.10 perf-profile.self.cycles-pp.fput 0.12 ± 6% +0.0 0.15 ± 4% perf-profile.self.cycles-pp.do_syscall_64 0.07 ± 5% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.__snprintf_chk 0.04 ± 57% +0.0 0.06 ± 6% perf-profile.self.cycles-pp.vm_area_dup 0.11 ± 4% +0.0 0.13 ± 3% perf-profile.self.cycles-pp.__get_user_8 0.08 ± 5% +0.0 0.11 ± 7% perf-profile.self.cycles-pp.file_free_rcu 0.08 +0.0 0.11 ± 4% perf-profile.self.cycles-pp.__vma_link_rb 0.13 ± 5% +0.0 0.16 ± 5% perf-profile.self.cycles-pp.copy_page_range 0.11 ± 3% +0.0 0.14 ± 3% perf-profile.self.cycles-pp.perf_event_mmap 0.18 ± 2% +0.0 0.21 ± 2% perf-profile.self.cycles-pp.find_vma 0.14 +0.0 0.17 ± 2% perf-profile.self.cycles-pp.copy_process 0.10 ± 4% +0.0 0.13 perf-profile.self.cycles-pp.link_path_walk 0.08 +0.0 0.11 ± 4% perf-profile.self.cycles-pp.__fput 0.08 ± 8% +0.0 0.11 ± 4% perf-profile.self.cycles-pp.free_pcppages_bulk 0.04 ± 57% +0.0 0.07 ± 7% perf-profile.self.cycles-pp.do_mmap 0.04 ± 57% +0.0 0.07 ± 7% perf-profile.self.cycles-pp.kmem_cache_alloc_trace 0.10 ± 4% +0.0 0.13 ± 3% perf-profile.self.cycles-pp.vma_interval_tree_augment_rotate 0.15 ± 2% +0.0 0.18 ± 2% perf-profile.self.cycles-pp.vma_compute_subtree_gap 0.14 ± 3% +0.0 0.17 ± 4% perf-profile.self.cycles-pp.avc_has_perm_noaudit 0.12 +0.0 0.15 ± 2% perf-profile.self.cycles-pp.lock_page_memcg 0.11 ± 4% +0.0 0.15 ± 2% perf-profile.self.cycles-pp._init 0.10 ± 5% +0.0 0.13 ± 3% perf-profile.self.cycles-pp.unmapped_area_topdown 0.11 +0.0 0.14 ± 3% perf-profile.self.cycles-pp.lockref_put_or_lock 0.03 ±100% +0.0 0.06 perf-profile.self.cycles-pp.unmap_vmas 0.18 +0.0 0.21 ± 4% perf-profile.self.cycles-pp.handle_mm_fault 0.09 +0.0 0.12 ± 4% perf-profile.self.cycles-pp.wake_q_add 0.15 ± 5% +0.0 0.18 ± 2% perf-profile.self.cycles-pp.kmem_cache_free 0.08 ± 5% +0.0 0.12 ± 5% perf-profile.self.cycles-pp.queued_write_lock_slowpath 0.18 ± 3% +0.0 0.22 ± 3% perf-profile.self.cycles-pp._IO_file_xsputn 0.17 ± 2% +0.0 0.21 ± 3% perf-profile.self.cycles-pp.strchrnul 0.16 ± 5% +0.0 0.20 ± 4% perf-profile.self.cycles-pp.memcpy_erms 0.12 ± 3% +0.0 0.16 ± 4% perf-profile.self.cycles-pp.__rb_erase_color 0.12 ± 7% +0.0 0.15 ± 3% perf-profile.self.cycles-pp.__pagevec_lru_add_fn 0.17 ± 2% +0.0 0.21 ± 2% perf-profile.self.cycles-pp.vmacache_find 0.08 +0.0 0.12 ± 11% perf-profile.self.cycles-pp.rcu_cblist_dequeue 0.16 +0.0 0.20 perf-profile.self.cycles-pp.mmap_region 0.14 +0.0 0.18 ± 2% perf-profile.self.cycles-pp.mark_page_accessed 0.07 ± 6% +0.0 0.11 ± 11% perf-profile.self.cycles-pp.queued_read_lock_slowpath 0.21 ± 2% +0.0 0.26 ± 4% perf-profile.self.cycles-pp.get_page_from_freelist 0.17 ± 2% +0.0 0.22 perf-profile.self.cycles-pp.malloc 0.16 ± 2% +0.0 0.21 ± 2% perf-profile.self.cycles-pp.strlen 0.01 ±173% +0.0 0.06 ± 7% perf-profile.self.cycles-pp.down_read_trylock 0.01 ±173% +0.0 0.06 ± 7% perf-profile.self.cycles-pp.__errno_location 0.17 ± 2% +0.0 0.22 ± 3% perf-profile.self.cycles-pp.selinux_inode_permission 0.26 +0.0 0.30 ± 5% perf-profile.self.cycles-pp.__rb_insert_augmented 0.18 ± 2% +0.0 0.23 ± 5% perf-profile.self.cycles-pp.__might_sleep 0.00 +0.1 0.05 perf-profile.self.cycles-pp.load_elf_binary 0.00 +0.1 0.05 perf-profile.self.cycles-pp.page_fault 0.00 +0.1 0.05 perf-profile.self.cycles-pp.pagevec_lru_move_fn 0.00 +0.1 0.05 perf-profile.self.cycles-pp.flush_tlb_mm_range 0.00 +0.1 0.05 perf-profile.self.cycles-pp.__inode_security_revalidate 0.00 +0.1 0.05 perf-profile.self.cycles-pp.dup_fd 0.00 +0.1 0.05 perf-profile.self.cycles-pp.acct_collect 0.00 +0.1 0.05 perf-profile.self.cycles-pp.vma_merge 0.00 +0.1 0.05 perf-profile.self.cycles-pp.rcu_segcblist_enqueue 0.24 ± 2% +0.1 0.30 ± 2% perf-profile.self.cycles-pp.___perf_sw_event 0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.mem_cgroup_throttle_swaprate 0.00 +0.1 0.05 ± 8% perf-profile.self.cycles-pp.anon_vma_interval_tree_insert 0.44 ± 2% +0.1 0.49 ± 4% perf-profile.self.cycles-pp.down_write 0.00 +0.1 0.05 ± 9% perf-profile.self.cycles-pp.__might_fault 0.00 +0.1 0.05 ± 9% perf-profile.self.cycles-pp.__mod_node_page_state 0.22 +0.1 0.28 ± 3% perf-profile.self.cycles-pp.__vsnprintf_chk 0.15 ± 2% +0.1 0.21 ± 5% perf-profile.self.cycles-pp.__alloc_file 0.30 +0.1 0.36 perf-profile.self.cycles-pp.native_flush_tlb_one_user 0.18 ± 4% +0.1 0.24 ± 3% perf-profile.self.cycles-pp.__do_page_fault 0.31 ± 2% +0.1 0.37 perf-profile.self.cycles-pp._IO_padn 0.33 ± 3% +0.1 0.40 perf-profile.self.cycles-pp.unlock_page 0.21 ± 3% +0.1 0.28 perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.20 ± 2% +0.1 0.27 ± 4% perf-profile.self.cycles-pp.copy_user_enhanced_fast_string 0.36 +0.1 0.43 ± 2% perf-profile.self.cycles-pp.page_add_file_rmap 0.31 +0.1 0.38 perf-profile.self.cycles-pp.vma_interval_tree_remove 0.27 ± 3% +0.1 0.34 ± 3% perf-profile.self.cycles-pp.__d_lookup_rcu 0.28 +0.1 0.35 ± 3% perf-profile.self.cycles-pp.__list_del_entry_valid 0.41 +0.1 0.49 ± 3% perf-profile.self.cycles-pp.select_task_rq_fair 0.34 +0.1 0.42 perf-profile.self.cycles-pp.swapgs_restore_regs_and_return_to_usermode 0.35 ± 3% +0.1 0.43 ± 3% perf-profile.self.cycles-pp.___might_sleep 0.29 ± 3% +0.1 0.38 perf-profile.self.cycles-pp.kmem_cache_alloc 0.36 ± 3% +0.1 0.45 perf-profile.self.cycles-pp._IO_fwrite 0.44 +0.1 0.53 perf-profile.self.cycles-pp.__handle_mm_fault 0.39 ± 3% +0.1 0.48 ± 2% perf-profile.self.cycles-pp.__slab_free 0.32 ± 2% +0.1 0.41 perf-profile.self.cycles-pp.alloc_set_pte 0.38 +0.1 0.47 perf-profile.self.cycles-pp.copy_page 0.52 +0.1 0.62 ± 3% perf-profile.self.cycles-pp.native_irq_return_iret 0.34 ± 2% +0.1 0.45 ± 2% perf-profile.self.cycles-pp.strnlen_user 0.41 ± 2% +0.1 0.52 ± 2% perf-profile.self.cycles-pp.free_pages_and_swap_cache 0.47 ± 2% +0.1 0.59 ± 2% perf-profile.self.cycles-pp.syscall_return_via_sysret 0.51 +0.1 0.64 ± 4% perf-profile.self.cycles-pp._raw_spin_lock 0.53 +0.1 0.66 perf-profile.self.cycles-pp.__entry_SYSCALL_64_trampoline 0.65 ± 2% +0.2 0.82 perf-profile.self.cycles-pp._IO_default_xsputn 0.84 +0.2 1.05 ± 3% perf-profile.self.cycles-pp.clear_page_erms 0.91 ± 2% +0.2 1.13 perf-profile.self.cycles-pp._dl_addr 0.91 +0.2 1.14 perf-profile.self.cycles-pp.vma_interval_tree_insert 1.08 +0.3 1.35 ± 2% perf-profile.self.cycles-pp.__strcoll_l 0.91 +0.3 1.20 perf-profile.self.cycles-pp.rwsem_spin_on_owner 0.92 ± 2% +0.3 1.26 ± 4% perf-profile.self.cycles-pp.page_remove_rmap 1.33 +0.4 1.72 ± 2% perf-profile.self.cycles-pp.unmap_page_range 1.75 ± 2% +0.4 2.18 perf-profile.self.cycles-pp.vfprintf 1.23 ± 2% +0.5 1.73 ± 5% perf-profile.self.cycles-pp.release_pages 1.47 +0.8 2.26 ± 6% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 6 months

5
9
0 / 0

[mm] 9bc8039e71: will-it-scale.per_thread_ops -64.1% regression

by kernel test robot

Greeting, FYI, we noticed a -64.1% regression of will-it-scale.per_thread_ops due to commit: commit: 9bc8039e715da3b53dbac89525323a9f2f69b7b5 ("mm: brk: downgrade mmap_sem to read when shrinking") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: will-it-scale on test machine: 8 threads Ivy Bridge with 16G memory with following parameters: nr_task: 100% mode: thread test: brk1 ucode: 0x20 cpufreq_governor: performance test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two. test-url: https://github.com/antonblanchard/will-it-scale Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-rhel-7.2/thread/100%/debian-x86_64-2018-04-03.cgz/lkp-ivb-d01/brk1/will-it-scale/0x20 commit: 85a06835f6 ("mm: mremap: downgrade mmap_sem to read when shrinking") 9bc8039e71 ("mm: brk: downgrade mmap_sem to read when shrinking") 85a06835f6f1ba79 9bc8039e715da3b53dbac89525 ---------------- -------------------------- fail:runs %reproduction fail:runs | | | 1:4 -25% :4 kmsg.a0f723>]usb_hcd_irq :4 25% 1:4 kmsg.b6a4a7>]usb_hcd_irq 1:4 -25% :4 kmsg.cae42e>]usb_hcd_irq :4 25% 1:4 kmsg.fb#f87>]usb_hcd_irq :4 25% 1:4 kmsg.fd#>]usb_hcd_irq %stddev %change %stddev \ | \ 196250 ± 8% -64.1% 70494 will-it-scale.per_thread_ops 127330 ± 19% -98.0% 2525 ± 24% will-it-scale.time.involuntary_context_switches 727.50 ± 2% -77.0% 167.25 will-it-scale.time.percent_of_cpu_this_job_got 2141 ± 2% -77.6% 479.12 will-it-scale.time.system_time 50.48 ± 7% -48.5% 25.98 will-it-scale.time.user_time 34925294 ± 18% +270.3% 1.293e+08 ± 4% will-it-scale.time.voluntary_context_switches 1570007 ± 8% -64.1% 563958 will-it-scale.workload 6435 ± 2% -6.4% 6024 proc-vmstat.nr_shmem 1298 ± 16% -44.5% 721.00 ± 18% proc-vmstat.pgactivate 2341 +16.4% 2724 slabinfo.kmalloc-96.active_objs 2341 +16.4% 2724 slabinfo.kmalloc-96.num_objs 6346 ±150% -87.8% 776.25 ± 9% softirqs.NET_RX 160107 ± 8% +151.9% 403273 softirqs.SCHED 1097999 -13.0% 955526 softirqs.TIMER 5.50 ± 9% -81.8% 1.00 vmstat.procs.r 230700 ± 19% +269.9% 853292 ± 4% vmstat.system.cs 26706 ± 3% +15.7% 30910 ± 5% vmstat.system.in 11.24 ± 23% +72.2 83.39 mpstat.cpu.idle% 0.00 ±131% +0.0 0.04 ± 99% mpstat.cpu.iowait% 86.32 ± 2% -70.8 15.54 mpstat.cpu.sys% 2.44 ± 7% -1.4 1.04 ± 8% mpstat.cpu.usr% 20610709 ± 15% +2376.0% 5.103e+08 ± 34% cpuidle.C1.time 3233399 ± 8% +241.5% 11042785 ± 25% cpuidle.C1.usage 36172040 ± 6% +931.3% 3.73e+08 ± 15% cpuidle.C1E.time 783605 ± 4% +548.7% 5083041 ± 18% cpuidle.C1E.usage 28753819 ± 39% +1054.5% 3.319e+08 ± 49% cpuidle.C3.time 283912 ± 25% +688.4% 2238225 ± 34% cpuidle.C3.usage 1.507e+08 ± 47% +292.3% 5.913e+08 ± 28% cpuidle.C6.time 339861 ± 37% +549.7% 2208222 ± 24% cpuidle.C6.usage 2709719 ± 5% +824.2% 25043444 cpuidle.POLL.time 28602864 ± 18% +173.7% 78276116 ± 10% cpuidle.POLL.usage 3338 ± 2% -71.8% 941.75 turbostat.Avg_MHz 90.40 ± 2% -65.1 25.31 turbostat.Busy% 3233316 ± 8% +241.5% 11042588 ± 25% turbostat.C1 0.83 ± 16% +20.2 21.02 ± 35% turbostat.C1% 783559 ± 4% +548.7% 5082972 ± 18% turbostat.C1E 1.46 ± 7% +13.9 15.34 ± 15% turbostat.C1E% 283898 ± 25% +688.4% 2238202 ± 34% turbostat.C3 1.17 ± 39% +12.5 13.66 ± 49% turbostat.C3% 339857 ± 37% +549.7% 2208205 ± 24% turbostat.C6 6.05 ± 46% +18.2 24.30 ± 28% turbostat.C6% 6.12 ± 18% +755.7% 52.39 ± 9% turbostat.CPU%c1 2.18 ±105% +735.9% 18.18 ± 45% turbostat.CPU%c3 1.30 ±117% +216.3% 4.12 ± 92% turbostat.CPU%c6 38.31 -37.2% 24.06 turbostat.CorWatt 8285923 ± 2% +13.9% 9436075 ± 6% turbostat.IRQ 43.17 -33.4% 28.77 turbostat.PkgWatt 8.92e+11 -67.9% 2.862e+11 ± 31% perf-stat.branch-instructions 0.55 ± 4% +1.0 1.53 ± 5% perf-stat.branch-miss-rate% 0.19 ± 22% +0.7 0.89 ± 69% perf-stat.cache-miss-rate% 2.401e+10 -57.3% 1.025e+10 ± 28% perf-stat.cache-references 71517245 ± 18% +264.5% 2.607e+08 ± 4% perf-stat.context-switches 1.85 -21.9% 1.44 ± 2% perf-stat.cpi 8.223e+12 ± 2% -76.8% 1.904e+12 ± 32% perf-stat.cpu-cycles 0.34 ± 11% +0.3 0.63 ± 9% perf-stat.dTLB-load-miss-rate% 4.563e+09 ± 10% -50.7% 2.252e+09 ± 27% perf-stat.dTLB-load-misses 1.357e+12 -73.2% 3.63e+11 ± 31% perf-stat.dTLB-loads 0.01 ± 28% +0.0 0.02 ± 10% perf-stat.dTLB-store-miss-rate% 20813820 ± 31% +109.2% 43542782 ± 25% perf-stat.dTLB-store-misses 97.04 -13.4 83.65 ± 2% perf-stat.iTLB-load-miss-rate% 5.871e+08 ± 8% -48.9% 3.001e+08 ± 35% perf-stat.iTLB-load-misses 17851698 ± 4% +235.7% 59936365 ± 41% perf-stat.iTLB-loads 4.456e+12 -70.6% 1.311e+12 ± 31% perf-stat.instructions 7651 ± 9% -41.0% 4513 ± 11% perf-stat.instructions-per-iTLB-miss 0.54 +28.2% 0.69 ± 2% perf-stat.ipc 131812 ± 2% -75.7% 31973 sched_debug.cfs_rq:/.exec_clock.avg 133451 ± 2% -67.5% 43371 ± 30% sched_debug.cfs_rq:/.exec_clock.max 130067 ± 4% -83.3% 21767 ± 30% sched_debug.cfs_rq:/.exec_clock.min 1220 ± 87% +592.8% 8456 ± 98% sched_debug.cfs_rq:/.exec_clock.stddev 229519 ± 6% +70.6% 391456 ± 4% sched_debug.cfs_rq:/.load.max 65462 ± 11% +141.1% 157808 ± 4% sched_debug.cfs_rq:/.load.stddev 82.00 ± 3% -83.5% 13.54 ± 30% sched_debug.cfs_rq:/.load_avg.min 985041 ± 4% -90.8% 90737 sched_debug.cfs_rq:/.min_vruntime.avg 1004586 ± 4% -87.2% 128180 ± 21% sched_debug.cfs_rq:/.min_vruntime.max 969836 ± 5% -93.6% 62139 ± 28% sched_debug.cfs_rq:/.min_vruntime.min 0.77 ± 5% -42.6% 0.44 ± 10% sched_debug.cfs_rq:/.nr_running.avg 0.34 ± 12% +39.5% 0.48 sched_debug.cfs_rq:/.nr_running.stddev 1.79 ± 7% -63.1% 0.66 ± 22% sched_debug.cfs_rq:/.nr_spread_over.avg 10.54 ± 20% -68.0% 3.38 ± 26% sched_debug.cfs_rq:/.nr_spread_over.max 3.52 ± 18% -68.3% 1.12 ± 25% sched_debug.cfs_rq:/.nr_spread_over.stddev 96.05 ± 6% -33.5% 63.92 ± 8% sched_debug.cfs_rq:/.runnable_load_avg.avg 237.58 ± 7% +31.3% 311.83 ± 2% sched_debug.cfs_rq:/.runnable_load_avg.max 67.84 ± 9% +55.7% 105.65 sched_debug.cfs_rq:/.runnable_load_avg.stddev 200408 ± 8% +80.6% 361912 ± 6% sched_debug.cfs_rq:/.runnable_weight.max 56555 ± 14% +160.3% 147211 ± 5% sched_debug.cfs_rq:/.runnable_weight.stddev 936.14 ± 2% -55.3% 418.09 ± 6% sched_debug.cfs_rq:/.util_avg.avg 1341 ± 11% -43.2% 762.54 ± 11% sched_debug.cfs_rq:/.util_avg.max 587.25 ± 18% -69.6% 178.75 ± 23% sched_debug.cfs_rq:/.util_avg.min 518.64 ± 11% -90.2% 50.84 ± 29% sched_debug.cfs_rq:/.util_est_enqueued.avg 1018 ± 4% -70.8% 297.75 ± 23% sched_debug.cfs_rq:/.util_est_enqueued.max 386.54 ± 6% -73.6% 102.24 ± 21% sched_debug.cfs_rq:/.util_est_enqueued.stddev 116574 ± 30% +67.2% 194964 ± 30% sched_debug.cpu.avg_idle.avg 93.29 ± 16% -35.1% 60.54 ± 8% sched_debug.cpu.cpu_load[0].avg 221.08 ± 8% +34.3% 296.96 ± 9% sched_debug.cpu.cpu_load[0].max 63.60 ± 9% +57.6% 100.26 ± 9% sched_debug.cpu.cpu_load[0].stddev 95.54 ± 13% -47.7% 49.98 ± 7% sched_debug.cpu.cpu_load[1].avg 41.00 ± 52% -97.7% 0.96 ± 68% sched_debug.cpu.cpu_load[1].min 44.57 ± 16% +38.2% 61.57 ± 8% sched_debug.cpu.cpu_load[1].stddev 98.62 ± 10% -58.2% 41.19 ± 7% sched_debug.cpu.cpu_load[2].avg 169.42 ± 8% -28.1% 121.79 ± 9% sched_debug.cpu.cpu_load[2].max 58.04 ± 35% -94.5% 3.17 ± 47% sched_debug.cpu.cpu_load[2].min 100.91 ± 8% -64.5% 35.80 ± 10% sched_debug.cpu.cpu_load[3].avg 155.21 ± 5% -39.6% 93.79 ± 13% sched_debug.cpu.cpu_load[3].max 70.42 ± 22% -93.3% 4.71 ± 36% sched_debug.cpu.cpu_load[3].min 102.59 ± 6% -68.9% 31.92 ± 17% sched_debug.cpu.cpu_load[4].avg 144.54 ± 5% -44.9% 79.71 ± 28% sched_debug.cpu.cpu_load[4].max 78.79 ± 15% -92.6% 5.83 ± 30% sched_debug.cpu.cpu_load[4].min 1044 ± 5% -33.5% 694.38 ± 4% sched_debug.cpu.curr->pid.avg 835.66 ± 4% +19.0% 994.65 sched_debug.cpu.curr->pid.stddev 228643 ± 6% +71.3% 391578 ± 4% sched_debug.cpu.load.max 64674 ± 11% +143.6% 157538 ± 4% sched_debug.cpu.load.stddev 0.00 ± 5% -48.4% 0.00 ± 46% sched_debug.cpu.next_balance.stddev 1.03 ± 16% -44.9% 0.57 ± 13% sched_debug.cpu.nr_running.avg 6206533 ± 12% +167.7% 16616895 ± 4% sched_debug.cpu.nr_switches.avg 6795551 ± 18% +222.4% 21911344 ± 19% sched_debug.cpu.nr_switches.max 5666982 ± 9% +115.3% 12201219 ± 17% sched_debug.cpu.nr_switches.min 351168 ± 73% +837.8% 3293280 ± 72% sched_debug.cpu.nr_switches.stddev 0.32 ± 21% +109.8% 0.67 ± 8% sched_debug.cpu.nr_uninterruptible.avg 6297340 ± 12% +163.9% 16617675 ± 4% sched_debug.cpu.sched_count.avg 6887997 ± 18% +218.1% 21912464 ± 19% sched_debug.cpu.sched_count.max 5753875 ± 8% +112.1% 12201952 ± 17% sched_debug.cpu.sched_count.min 352908 ± 73% +833.2% 3293323 ± 71% sched_debug.cpu.sched_count.stddev 3067826 ± 12% +170.7% 8305951 ± 4% sched_debug.cpu.sched_goidle.avg 3361061 ± 18% +225.9% 10953485 ± 19% sched_debug.cpu.sched_goidle.max 2798299 ± 9% +117.9% 6098033 ± 17% sched_debug.cpu.sched_goidle.min 175049 ± 72% +840.7% 1646720 ± 72% sched_debug.cpu.sched_goidle.stddev 3232125 ± 11% +159.6% 8389199 ± 4% sched_debug.cpu.ttwu_count.avg 3533980 ± 16% +275.2% 13260800 ± 36% sched_debug.cpu.ttwu_count.max 271212 ±109% +1140.0% 3363044 ± 83% sched_debug.cpu.ttwu_count.stddev 107111 ± 9% +30.6% 139843 ± 17% sched_debug.cpu.ttwu_local.max 85459 ± 6% -29.3% 60381 ± 44% sched_debug.cpu.ttwu_local.min 6551 ± 69% +374.8% 31104 ± 78% sched_debug.cpu.ttwu_local.stddev 82.07 -72.2 9.87 ± 5% perf-profile.calltrace.cycles-pp.down_write_killable.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 81.23 -72.0 9.20 ± 5% perf-profile.calltrace.cycles-pp.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 81.17 -72.0 9.18 ± 5% perf-profile.calltrace.cycles-pp.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk.do_syscall_64 68.76 -68.8 0.00 perf-profile.calltrace.cycles-pp.osq_lock.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk 94.12 -54.6 39.55 ± 2% perf-profile.calltrace.cycles-pp.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 94.54 -54.4 40.16 ± 3% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe 94.69 -54.3 40.35 ± 3% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe 10.16 ± 3% -10.0 0.19 ±173% perf-profile.calltrace.cycles-pp.rwsem_spin_on_owner.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk 0.89 ± 10% -0.2 0.67 ± 6% perf-profile.calltrace.cycles-pp.anon_vma_clone.__split_vma.__do_munmap.__x64_sys_brk.do_syscall_64 0.66 ± 6% +0.4 1.03 ± 8% perf-profile.calltrace.cycles-pp.unmap_page_range.unmap_vmas.unmap_region.__do_munmap.__x64_sys_brk 0.74 ± 6% +0.4 1.16 ± 8% perf-profile.calltrace.cycles-pp.unmap_vmas.unmap_region.__do_munmap.__x64_sys_brk.do_syscall_64 1.42 ± 7% +0.4 1.85 ± 6% perf-profile.calltrace.cycles-pp.vma_merge.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.59 ± 11% perf-profile.calltrace.cycles-pp.__task_rq_lock.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake 0.00 +0.6 0.63 ± 13% perf-profile.calltrace.cycles-pp.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter_state.do_idle.cpu_startup_entry 0.00 +0.7 0.66 ± 18% perf-profile.calltrace.cycles-pp.tick_nohz_idle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 0.00 +0.7 0.67 ± 9% perf-profile.calltrace.cycles-pp.pick_next_task_fair.__sched_text_start.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable 0.00 +0.7 0.67 ± 11% perf-profile.calltrace.cycles-pp.unlink_anon_vmas.free_pgtables.unmap_region.__do_munmap.__x64_sys_brk 0.00 +0.7 0.67 ± 7% perf-profile.calltrace.cycles-pp.pick_next_task_idle.__sched_text_start.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable 0.00 +0.7 0.68 ± 12% perf-profile.calltrace.cycles-pp.find_next_bit.__next_timer_interrupt.get_next_timer_interrupt.tick_nohz_next_event.tick_nohz_get_sleep_length 0.00 +0.7 0.68 ± 13% perf-profile.calltrace.cycles-pp.apic_timer_interrupt.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 0.67 ± 7% +0.7 1.35 ± 9% perf-profile.calltrace.cycles-pp.perf_event_mmap.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.14 ±173% +0.7 0.87 ± 5% perf-profile.calltrace.cycles-pp.get_unmapped_area.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.8 0.77 ± 8% perf-profile.calltrace.cycles-pp.security_vm_enough_memory_mm.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.8 0.78 ± 11% perf-profile.calltrace.cycles-pp.free_pgtables.unmap_region.__do_munmap.__x64_sys_brk.do_syscall_64 0.00 +0.9 0.87 ± 17% perf-profile.calltrace.cycles-pp.unwind_next_frame.__save_stack_trace.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity 0.00 +0.9 0.91 ± 8% perf-profile.calltrace.cycles-pp.update_curr.dequeue_entity.dequeue_task_fair.__sched_text_start.schedule 1.75 ± 10% +0.9 2.66 ± 5% perf-profile.calltrace.cycles-pp.unmap_region.__do_munmap.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +1.0 0.98 ± 7% perf-profile.calltrace.cycles-pp.__switch_to 0.00 +1.0 0.98 ± 9% perf-profile.calltrace.cycles-pp.__switch_to_asm 0.00 +1.1 1.10 ± 3% perf-profile.calltrace.cycles-pp.update_load_avg.dequeue_entity.dequeue_task_fair.__sched_text_start.schedule 0.00 +1.1 1.11 ± 20% perf-profile.calltrace.cycles-pp.select_task_rq_fair.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake 0.00 +1.2 1.20 ± 6% perf-profile.calltrace.cycles-pp.__next_timer_interrupt.get_next_timer_interrupt.tick_nohz_next_event.tick_nohz_get_sleep_length.menu_select 0.00 +1.6 1.64 ± 7% perf-profile.calltrace.cycles-pp.set_next_entity.pick_next_task_fair.__sched_text_start.schedule_idle.do_idle 0.00 +1.9 1.86 ± 14% perf-profile.calltrace.cycles-pp.__save_stack_trace.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity.enqueue_task_fair 5.75 ± 4% +1.9 7.64 ± 5% perf-profile.calltrace.cycles-pp.__do_munmap.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +1.9 1.91 ± 14% perf-profile.calltrace.cycles-pp.save_stack_trace_tsk.__account_scheduler_latency.enqueue_entity.enqueue_task_fair.ttwu_do_activate 0.00 +2.1 2.09 ± 11% perf-profile.calltrace.cycles-pp.get_next_timer_interrupt.tick_nohz_next_event.tick_nohz_get_sleep_length.menu_select.do_idle 3.38 ± 5% +2.1 5.47 ± 4% perf-profile.calltrace.cycles-pp.do_brk_flags.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +2.2 2.25 ± 14% perf-profile.calltrace.cycles-pp.__account_scheduler_latency.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up 0.00 +2.5 2.46 ± 7% perf-profile.calltrace.cycles-pp.pick_next_task_fair.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry 0.00 +2.5 2.46 ± 10% perf-profile.calltrace.cycles-pp.tick_nohz_next_event.tick_nohz_get_sleep_length.menu_select.do_idle.cpu_startup_entry 0.00 +3.1 3.06 ± 6% perf-profile.calltrace.cycles-pp.tick_nohz_get_sleep_length.menu_select.do_idle.cpu_startup_entry.start_secondary 0.00 +3.5 3.52 ± 4% perf-profile.calltrace.cycles-pp.dequeue_entity.dequeue_task_fair.__sched_text_start.schedule.rwsem_down_write_failed_killable 0.00 +3.8 3.80 ± 8% perf-profile.calltrace.cycles-pp.poll_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 0.00 +4.1 4.10 ± 3% perf-profile.calltrace.cycles-pp.dequeue_task_fair.__sched_text_start.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable 0.00 +4.7 4.66 ± 11% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule_idle.do_idle.cpu_startup_entry.start_secondary 0.00 +4.8 4.83 ± 11% perf-profile.calltrace.cycles-pp.schedule_idle.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 0.00 +5.3 5.27 ± 6% perf-profile.calltrace.cycles-pp.menu_select.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 0.91 ± 16% +5.5 6.44 ± 4% perf-profile.calltrace.cycles-pp.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake.up_write 0.95 ± 15% +5.7 6.70 ± 4% perf-profile.calltrace.cycles-pp.wake_up_q.rwsem_wake.call_rwsem_wake.up_write.__x64_sys_brk 1.73 ± 11% +5.8 7.53 ± 4% perf-profile.calltrace.cycles-pp.up_write.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +6.2 6.15 ± 2% perf-profile.calltrace.cycles-pp.enqueue_entity.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.wake_up_q 1.15 ± 17% +6.2 7.33 ± 4% perf-profile.calltrace.cycles-pp.rwsem_wake.call_rwsem_wake.up_write.__x64_sys_brk.do_syscall_64 1.15 ± 17% +6.2 7.36 ± 4% perf-profile.calltrace.cycles-pp.call_rwsem_wake.up_write.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +6.9 6.93 ± 3% perf-profile.calltrace.cycles-pp.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake.up_read 0.00 +6.9 6.95 ± 2% perf-profile.calltrace.cycles-pp.enqueue_task_fair.ttwu_do_activate.try_to_wake_up.wake_up_q.rwsem_wake 0.00 +7.1 7.15 ± 3% perf-profile.calltrace.cycles-pp.wake_up_q.rwsem_wake.call_rwsem_wake.up_read.__x64_sys_brk 0.00 +7.3 7.33 ± 2% perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.wake_up_q.rwsem_wake.call_rwsem_wake 0.00 +7.8 7.75 ± 3% perf-profile.calltrace.cycles-pp.rwsem_wake.call_rwsem_wake.up_read.__x64_sys_brk.do_syscall_64 0.00 +7.8 7.79 ± 3% perf-profile.calltrace.cycles-pp.call_rwsem_wake.up_read.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +7.9 7.90 ± 3% perf-profile.calltrace.cycles-pp.up_read.__x64_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +8.0 8.00 ± 4% perf-profile.calltrace.cycles-pp.__sched_text_start.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable 0.00 +8.2 8.22 ± 4% perf-profile.calltrace.cycles-pp.schedule.rwsem_down_write_failed_killable.call_rwsem_down_write_failed_killable.down_write_killable.__x64_sys_brk 0.83 ± 27% +25.9 26.75 ± 11% perf-profile.calltrace.cycles-pp.intel_idle.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary 1.09 ± 32% +30.9 31.97 ± 10% perf-profile.calltrace.cycles-pp.cpuidle_enter_state.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 1.62 ± 36% +44.4 46.01 ± 9% perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64 1.63 ± 36% +44.5 46.18 ± 9% perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64 1.63 ± 36% +44.6 46.21 ± 9% perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64 1.73 ± 29% +51.1 52.86 ± 2% perf-profile.calltrace.cycles-pp.secondary_startup_64 82.10 -72.2 9.91 ± 6% perf-profile.children.cycles-pp.down_write_killable 81.23 -72.0 9.20 ± 5% perf-profile.children.cycles-pp.call_rwsem_down_write_failed_killable 81.20 -72.0 9.18 ± 5% perf-profile.children.cycles-pp.rwsem_down_write_failed_killable 68.78 -68.8 0.01 ±173% perf-profile.children.cycles-pp.osq_lock 94.15 -54.6 39.58 ± 2% perf-profile.children.cycles-pp.__x64_sys_brk 94.59 -54.3 40.28 ± 3% perf-profile.children.cycles-pp.do_syscall_64 94.74 -54.3 40.48 ± 3% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 10.16 ± 3% -9.8 0.38 ± 61% perf-profile.children.cycles-pp.rwsem_spin_on_owner 1.25 ± 11% -0.5 0.78 ± 5% perf-profile.children.cycles-pp.find_vma 0.89 ± 10% -0.2 0.67 ± 7% perf-profile.children.cycles-pp.anon_vma_clone 0.27 ± 31% -0.1 0.12 ± 5% perf-profile.children.cycles-pp.tlb_gather_mmu 0.07 ± 7% +0.0 0.10 ± 12% perf-profile.children.cycles-pp.cap_mmap_addr 0.03 ±100% +0.0 0.07 ± 11% perf-profile.children.cycles-pp.tlb_flush_mmu_free 0.00 +0.1 0.05 perf-profile.children.cycles-pp.irq_work_run_list 0.08 ± 25% +0.1 0.14 ± 13% perf-profile.children.cycles-pp.arch_tlb_finish_mmu 0.01 ±173% +0.1 0.07 ± 12% perf-profile.children.cycles-pp.cap_capable 0.07 ± 12% +0.1 0.13 ± 23% perf-profile.children.cycles-pp.selinux_mmap_addr 0.04 ± 60% +0.1 0.10 ± 27% perf-profile.children.cycles-pp.free_pgd_range 0.00 +0.1 0.06 ± 13% perf-profile.children.cycles-pp.strlen 0.00 +0.1 0.07 ± 16% perf-profile.children.cycles-pp.sched_idle_set_state 0.00 +0.1 0.07 ± 33% perf-profile.children.cycles-pp.__list_add_valid 0.03 ±102% +0.1 0.10 ± 14% perf-profile.children.cycles-pp.__vm_enough_memory 0.00 +0.1 0.08 ± 24% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler 0.00 +0.1 0.08 ± 30% perf-profile.children.cycles-pp.rcu_note_context_switch 0.00 +0.1 0.08 ± 14% perf-profile.children.cycles-pp.tsc_verify_tsc_adjust 0.00 +0.1 0.08 ± 15% perf-profile.children.cycles-pp.lapic_next_deadline 0.00 +0.1 0.08 ± 15% perf-profile.children.cycles-pp.__enqueue_entity 0.00 +0.1 0.08 ± 26% perf-profile.children.cycles-pp.perf_exclude_event 0.04 ± 58% +0.1 0.12 ± 31% perf-profile.children.cycles-pp.lru_add_drain_cpu 0.00 +0.1 0.08 ± 27% perf-profile.children.cycles-pp.in_sched_functions 0.09 ± 20% +0.1 0.18 ± 26% perf-profile.children.cycles-pp.tick_sched_handle 0.09 ± 21% +0.1 0.17 ± 26% perf-profile.children.cycles-pp.update_process_times 0.00 +0.1 0.09 ± 16% perf-profile.children.cycles-pp.tick_check_broadcast_expired 0.00 +0.1 0.09 ± 16% perf-profile.children.cycles-pp.native_irq_return_iret 0.23 ± 15% +0.1 0.32 ± 13% perf-profile.children.cycles-pp.remove_vma 0.00 +0.1 0.09 ± 23% perf-profile.children.cycles-pp.get_cpu_device 0.00 +0.1 0.09 ± 13% perf-profile.children.cycles-pp.vma_adjust_trans_huge 0.00 +0.1 0.09 ± 13% perf-profile.children.cycles-pp.rb_insert_color_cached 0.00 +0.1 0.09 ± 15% perf-profile.children.cycles-pp.arch_cpu_idle_enter 0.00 +0.1 0.09 ± 17% perf-profile.children.cycles-pp.hugepage_vma_check 0.00 +0.1 0.09 ± 20% perf-profile.children.cycles-pp.put_prev_task_idle 0.10 ± 15% +0.1 0.19 ± 13% perf-profile.children.cycles-pp.__vma_link_rb 0.00 +0.1 0.10 ± 15% perf-profile.children.cycles-pp.userfaultfd_unmap_prep 0.10 ± 19% +0.1 0.20 ± 21% perf-profile.children.cycles-pp.__rb_insert_augmented 0.00 +0.1 0.10 ± 12% perf-profile.children.cycles-pp.clear_buddies 0.16 ± 14% +0.1 0.27 ± 22% perf-profile.children.cycles-pp.arch_get_unmapped_area_topdown 0.03 ±100% +0.1 0.13 ± 5% perf-profile.children.cycles-pp.khugepaged_enter_vma_merge 0.13 ± 19% +0.1 0.23 ± 13% perf-profile.children.cycles-pp.tlb_finish_mmu 0.00 +0.1 0.10 ± 28% perf-profile.children.cycles-pp.pm_qos_request 0.00 +0.1 0.10 ± 34% perf-profile.children.cycles-pp.stack_access_ok 0.00 +0.1 0.11 ± 37% perf-profile.children.cycles-pp.perf_swevent_event 0.17 ± 27% +0.1 0.28 ± 7% perf-profile.children.cycles-pp.avc_has_perm_noaudit 0.00 +0.1 0.11 ± 11% perf-profile.children.cycles-pp.irq_work_needs_cpu 0.00 +0.1 0.11 ± 17% perf-profile.children.cycles-pp.reschedule_interrupt 0.00 +0.1 0.11 ± 19% perf-profile.children.cycles-pp.clockevents_program_event 0.00 +0.1 0.11 ± 42% perf-profile.children.cycles-pp.tick_nohz_tick_stopped 0.10 ± 15% +0.1 0.22 ± 24% perf-profile.children.cycles-pp.tick_sched_timer 0.00 +0.1 0.12 ± 33% perf-profile.children.cycles-pp.can_stop_idle_tick 0.53 ± 4% +0.1 0.66 ± 9% perf-profile.children.cycles-pp.vma_compute_subtree_gap 0.00 +0.1 0.12 ± 13% perf-profile.children.cycles-pp.native_load_tls 0.00 +0.1 0.13 ± 33% perf-profile.children.cycles-pp.load_new_mm_cr3 0.07 ± 23% +0.1 0.20 ± 10% perf-profile.children.cycles-pp.cap_vm_enough_memory 0.00 +0.1 0.14 ± 19% perf-profile.children.cycles-pp.__update_idle_core 0.00 +0.1 0.14 ± 15% perf-profile.children.cycles-pp.update_min_vruntime 0.00 +0.1 0.14 ± 26% perf-profile.children.cycles-pp.leave_mm 0.33 ± 6% +0.1 0.47 ± 14% perf-profile.children.cycles-pp.___might_sleep 0.00 +0.2 0.15 ± 24% perf-profile.children.cycles-pp.ttwu_stat 0.09 ± 20% +0.2 0.24 ± 13% perf-profile.children.cycles-pp.perf_event_mmap_output 0.14 ± 9% +0.2 0.30 ± 20% perf-profile.children.cycles-pp.strlcpy 0.01 ±173% +0.2 0.18 ± 31% perf-profile.children.cycles-pp.__softirqentry_text_start 0.00 +0.2 0.17 ± 25% perf-profile.children.cycles-pp.deactivate_task 0.00 +0.2 0.18 ± 12% perf-profile.children.cycles-pp.orc_find 0.00 +0.2 0.18 ± 14% perf-profile.children.cycles-pp.sched_ttwu_pending 0.24 ± 14% +0.2 0.42 ± 7% perf-profile.children.cycles-pp.security_mmap_addr 0.00 +0.2 0.18 ± 11% perf-profile.children.cycles-pp.rcu_eqs_exit 0.00 +0.2 0.19 ± 15% perf-profile.children.cycles-pp.rcu_eqs_enter 0.20 ± 10% +0.2 0.40 ± 14% perf-profile.children.cycles-pp.__might_sleep 0.07 ± 21% +0.2 0.27 ± 18% perf-profile.children.cycles-pp.__vma_rb_erase 0.00 +0.2 0.20 ± 22% perf-profile.children.cycles-pp.rb_next 0.00 +0.2 0.20 ± 20% perf-profile.children.cycles-pp.__list_del_entry_valid 0.00 +0.2 0.20 ± 22% perf-profile.children.cycles-pp.save_stack_address 0.22 ± 19% +0.2 0.43 ± 9% perf-profile.children.cycles-pp.cred_has_capability 0.00 +0.2 0.22 ± 25% perf-profile.children.cycles-pp.__orc_find 0.00 +0.2 0.23 ± 14% perf-profile.children.cycles-pp.kernel_text_address 0.03 ±100% +0.2 0.25 ± 24% perf-profile.children.cycles-pp.irq_exit 0.00 +0.2 0.23 ± 27% perf-profile.children.cycles-pp.__rwsem_mark_wake 0.00 +0.2 0.24 ± 22% perf-profile.children.cycles-pp.nr_iowait_cpu 0.00 +0.2 0.25 ± 12% perf-profile.children.cycles-pp.call_cpuidle 0.24 ± 13% +0.3 0.50 ± 9% perf-profile.children.cycles-pp.perf_iterate_sb 0.38 ± 13% +0.3 0.63 ± 14% perf-profile.children.cycles-pp.vm_area_dup 0.32 ± 7% +0.3 0.57 ± 9% perf-profile.children.cycles-pp.kmem_cache_alloc 0.00 +0.3 0.26 ± 8% perf-profile.children.cycles-pp.put_prev_entity 0.16 ± 12% +0.3 0.42 ± 11% perf-profile.children.cycles-pp.__hrtimer_run_queues 0.00 +0.3 0.27 ± 24% perf-profile.children.cycles-pp.menu_reflect 0.00 +0.3 0.27 ± 14% perf-profile.children.cycles-pp.activate_task 0.00 +0.3 0.27 ± 23% perf-profile.children.cycles-pp.__hrtimer_next_event_base 0.00 +0.3 0.27 ± 14% perf-profile.children.cycles-pp.account_entity_dequeue 0.00 +0.3 0.28 ± 18% perf-profile.children.cycles-pp.__kernel_text_address 0.00 +0.3 0.28 ± 8% perf-profile.children.cycles-pp.get_iowait_load 0.27 ± 13% +0.3 0.56 ± 12% perf-profile.children.cycles-pp.selinux_vm_enough_memory 0.41 ± 2% +0.3 0.70 ± 9% perf-profile.children.cycles-pp.unlink_anon_vmas 0.00 +0.3 0.31 ± 13% perf-profile.children.cycles-pp.pick_next_entity 0.00 +0.3 0.31 ± 4% perf-profile.children.cycles-pp.rb_erase_cached 0.00 +0.3 0.32 ± 13% perf-profile.children.cycles-pp.cpuidle_governor_latency_req 0.00 +0.3 0.32 ± 13% perf-profile.children.cycles-pp.account_entity_enqueue 0.00 +0.3 0.33 ± 8% perf-profile.children.cycles-pp.available_idle_cpu 0.00 +0.3 0.34 ± 14% perf-profile.children.cycles-pp.update_ts_time_stats 0.00 +0.3 0.34 ± 12% perf-profile.children.cycles-pp.unwind_get_return_address 0.00 +0.3 0.35 ± 20% perf-profile.children.cycles-pp.rwsem_downgrade_wake 0.45 ± 3% +0.4 0.80 ± 11% perf-profile.children.cycles-pp.free_pgtables 0.00 +0.4 0.37 ± 8% perf-profile.children.cycles-pp.__calc_delta 0.00 +0.4 0.37 ± 24% perf-profile.children.cycles-pp.call_rwsem_downgrade_wake 0.00 +0.4 0.38 ± 8% perf-profile.children.cycles-pp.select_idle_sibling 0.68 ± 6% +0.4 1.06 ± 7% perf-profile.children.cycles-pp.unmap_page_range 0.00 +0.4 0.39 ± 7% perf-profile.children.cycles-pp.put_prev_task_fair 0.22 ± 8% +0.4 0.62 ± 8% perf-profile.children.cycles-pp.hrtimer_interrupt 0.00 +0.4 0.41 ± 2% perf-profile.children.cycles-pp.rcu_idle_exit 0.50 ± 11% +0.4 0.91 ± 6% perf-profile.children.cycles-pp.get_unmapped_area 0.00 +0.4 0.42 ± 3% perf-profile.children.cycles-pp.hrtimer_get_next_event 0.36 ± 11% +0.4 0.79 ± 9% perf-profile.children.cycles-pp.security_vm_enough_memory_mm 0.75 ± 6% +0.4 1.19 ± 8% perf-profile.children.cycles-pp.unmap_vmas 1.42 ± 7% +0.4 1.86 ± 5% perf-profile.children.cycles-pp.vma_merge 0.00 +0.5 0.46 ± 15% perf-profile.children.cycles-pp.__unwind_start 0.00 +0.5 0.46 ± 32% perf-profile.children.cycles-pp.resched_curr 0.12 ± 8% +0.5 0.62 ± 12% perf-profile.children.cycles-pp.__indirect_thunk_start 0.01 ±173% +0.5 0.53 ± 14% perf-profile.children.cycles-pp.read_tsc 0.00 +0.5 0.52 ± 23% perf-profile.children.cycles-pp.downgrade_write 0.06 ± 62% +0.5 0.58 ± 12% perf-profile.children.cycles-pp.wake_q_add 0.44 ± 26% +0.6 1.00 ± 25% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 0.00 +0.6 0.62 ± 13% perf-profile.children.cycles-pp.reweight_entity 0.04 ±106% +0.6 0.67 ± 6% perf-profile.children.cycles-pp.native_write_msr 0.00 +0.6 0.63 ± 13% perf-profile.children.cycles-pp.hrtimer_next_event_without 0.00 +0.6 0.64 ± 6% perf-profile.children.cycles-pp.___perf_sw_event 0.00 +0.7 0.68 ± 7% perf-profile.children.cycles-pp.pick_next_task_idle 0.28 ± 9% +0.7 0.96 ± 10% perf-profile.children.cycles-pp.smp_apic_timer_interrupt 0.04 ±100% +0.7 0.72 ± 10% perf-profile.children.cycles-pp.__task_rq_lock 0.02 ±173% +0.7 0.71 ± 9% perf-profile.children.cycles-pp.switch_mm_irqs_off 0.00 +0.7 0.70 ± 10% perf-profile.children.cycles-pp.update_rq_clock 0.00 +0.7 0.72 ± 6% perf-profile.children.cycles-pp.__update_load_avg_se 0.68 ± 6% +0.7 1.40 ± 9% perf-profile.children.cycles-pp.perf_event_mmap 0.00 +0.7 0.74 ± 12% perf-profile.children.cycles-pp.tick_nohz_idle_enter 0.29 ± 8% +0.7 1.03 ± 10% perf-profile.children.cycles-pp.apic_timer_interrupt 0.01 ±173% +0.7 0.76 ± 6% perf-profile.children.cycles-pp.finish_task_switch 0.01 ±173% +0.8 0.81 ± 4% perf-profile.children.cycles-pp.__update_load_avg_cfs_rq 0.03 ±100% +0.8 0.84 ± 11% perf-profile.children.cycles-pp.ktime_get 0.02 ±173% +0.8 0.83 ± 21% perf-profile.children.cycles-pp.check_preempt_curr 0.01 ±173% +0.8 0.83 ± 12% perf-profile.children.cycles-pp.tick_nohz_idle_exit 0.03 ±105% +0.9 0.88 ± 2% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.02 ±173% +0.9 0.92 ± 20% perf-profile.children.cycles-pp.ttwu_do_wakeup 0.46 ± 26% +0.9 1.36 ± 20% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 1.75 ± 10% +0.9 2.67 ± 5% perf-profile.children.cycles-pp.unmap_region 0.01 ±173% +0.9 0.95 ± 11% perf-profile.children.cycles-pp.find_next_bit 0.01 ±173% +1.0 0.99 ± 7% perf-profile.children.cycles-pp.update_cfs_group 0.03 ±105% +1.0 1.04 ± 8% perf-profile.children.cycles-pp.__switch_to_asm 0.04 ± 57% +1.0 1.07 ± 10% perf-profile.children.cycles-pp.update_curr 0.03 ±100% +1.2 1.24 ± 4% perf-profile.children.cycles-pp.select_task_rq_fair 0.01 ±173% +1.2 1.23 ± 6% perf-profile.children.cycles-pp.__switch_to 0.28 ± 12% +1.3 1.55 ± 10% perf-profile.children.cycles-pp._raw_spin_lock 0.01 ±173% +1.3 1.34 ± 13% perf-profile.children.cycles-pp.native_sched_clock 0.02 ±173% +1.4 1.37 ± 12% perf-profile.children.cycles-pp.sched_clock 0.00 +1.4 1.36 ± 12% perf-profile.children.cycles-pp.unwind_next_frame 0.04 ± 63% +1.4 1.49 ± 9% perf-profile.children.cycles-pp.sched_clock_cpu 0.03 ±100% +1.5 1.48 ± 10% perf-profile.children.cycles-pp.__next_timer_interrupt 0.08 ± 38% +1.7 1.77 ± 5% perf-profile.children.cycles-pp.set_next_entity 5.79 ± 4% +1.9 7.71 ± 5% perf-profile.children.cycles-pp.__do_munmap 0.00 +2.1 2.09 ± 9% perf-profile.children.cycles-pp.__save_stack_trace 3.38 ± 5% +2.1 5.47 ± 4% perf-profile.children.cycles-pp.do_brk_flags 0.00 +2.1 2.13 ± 9% perf-profile.children.cycles-pp.save_stack_trace_tsk 0.05 ± 61% +2.2 2.22 ± 7% perf-profile.children.cycles-pp.get_next_timer_interrupt 0.01 ±173% +2.5 2.53 ± 8% perf-profile.children.cycles-pp.__account_scheduler_latency 0.11 ± 47% +2.5 2.65 ± 2% perf-profile.children.cycles-pp.update_load_avg 0.06 ± 60% +2.6 2.66 ± 7% perf-profile.children.cycles-pp.tick_nohz_next_event 0.15 ± 42% +3.2 3.33 ± 6% perf-profile.children.cycles-pp.pick_next_task_fair 0.09 ± 31% +3.4 3.51 ± 7% perf-profile.children.cycles-pp.tick_nohz_get_sleep_length 0.14 ± 35% +3.5 3.62 ± 3% perf-profile.children.cycles-pp.dequeue_entity 0.16 ± 36% +4.0 4.12 ± 2% perf-profile.children.cycles-pp.dequeue_task_fair 0.24 ± 44% +4.1 4.30 ± 5% perf-profile.children.cycles-pp.poll_idle 0.24 ± 50% +5.3 5.54 ± 4% perf-profile.children.cycles-pp.schedule_idle 2.34 ± 9% +5.6 7.90 ± 4% perf-profile.children.cycles-pp.up_write 0.19 ± 35% +5.8 5.99 ± 6% perf-profile.children.cycles-pp.menu_select 0.20 ± 33% +6.1 6.30 ± 2% perf-profile.children.cycles-pp.enqueue_entity 0.22 ± 32% +6.7 6.96 ± 2% perf-profile.children.cycles-pp.enqueue_task_fair 0.24 ± 29% +7.1 7.35 ± 2% perf-profile.children.cycles-pp.ttwu_do_activate 0.00 +7.9 7.91 ± 3% perf-profile.children.cycles-pp.up_read 0.32 ± 37% +7.9 8.23 ± 4% perf-profile.children.cycles-pp.schedule 0.91 ± 15% +12.5 13.40 ± 3% perf-profile.children.cycles-pp.try_to_wake_up 0.95 ± 15% +12.9 13.85 ± 3% perf-profile.children.cycles-pp.wake_up_q 0.55 ± 43% +13.0 13.52 ± 4% perf-profile.children.cycles-pp.__sched_text_start 1.15 ± 17% +14.0 15.11 ± 3% perf-profile.children.cycles-pp.rwsem_wake 1.15 ± 17% +14.0 15.15 ± 3% perf-profile.children.cycles-pp.call_rwsem_wake 0.88 ± 20% +29.8 30.72 ± 5% perf-profile.children.cycles-pp.intel_idle 1.16 ± 24% +35.6 36.74 ± 4% perf-profile.children.cycles-pp.cpuidle_enter_state 1.63 ± 36% +44.6 46.21 ± 9% perf-profile.children.cycles-pp.start_secondary 1.74 ± 29% +51.1 52.81 ± 2% perf-profile.children.cycles-pp.do_idle 1.73 ± 29% +51.1 52.86 ± 2% perf-profile.children.cycles-pp.secondary_startup_64 1.73 ± 29% +51.1 52.86 ± 2% perf-profile.children.cycles-pp.cpu_startup_entry 68.56 -68.5 0.01 ±173% perf-profile.self.cycles-pp.osq_lock 10.12 ± 4% -9.7 0.38 ± 61% perf-profile.self.cycles-pp.rwsem_spin_on_owner 1.41 ± 7% -0.9 0.51 ± 17% perf-profile.self.cycles-pp.rwsem_down_write_failed_killable 1.16 ± 4% -0.6 0.52 ± 12% perf-profile.self.cycles-pp.up_write 1.02 ± 14% -0.5 0.48 ± 9% perf-profile.self.cycles-pp.find_vma 1.16 ± 5% -0.2 0.94 ± 2% perf-profile.self.cycles-pp.__vma_adjust 0.38 ± 10% -0.2 0.20 ± 17% perf-profile.self.cycles-pp.anon_vma_clone 0.26 ± 31% -0.1 0.12 ± 5% perf-profile.self.cycles-pp.tlb_gather_mmu 0.06 ± 15% +0.0 0.09 ± 15% perf-profile.self.cycles-pp.cap_mmap_addr 0.06 +0.0 0.10 ± 8% perf-profile.self.cycles-pp.__split_vma 0.01 ±173% +0.0 0.06 ± 14% perf-profile.self.cycles-pp.remove_vma 0.04 ± 58% +0.1 0.09 ± 19% perf-profile.self.cycles-pp.tlb_finish_mmu 0.00 +0.1 0.05 ± 9% perf-profile.self.cycles-pp.strlen 0.00 +0.1 0.06 ± 11% perf-profile.self.cycles-pp.unwind_get_return_address 0.04 ± 60% +0.1 0.10 ± 27% perf-profile.self.cycles-pp.free_pgd_range 0.00 +0.1 0.06 ± 13% perf-profile.self.cycles-pp.cap_capable 0.00 +0.1 0.06 ± 34% perf-profile.self.cycles-pp.__list_add_valid 0.04 ± 58% +0.1 0.11 ± 28% perf-profile.self.cycles-pp.lru_add_drain_cpu 0.00 +0.1 0.07 ± 14% perf-profile.self.cycles-pp.tsc_verify_tsc_adjust 0.00 +0.1 0.07 ± 22% perf-profile.self.cycles-pp.kernel_text_address 0.00 +0.1 0.07 ± 34% perf-profile.self.cycles-pp.put_prev_task_idle 0.00 +0.1 0.07 ± 17% perf-profile.self.cycles-pp.hugepage_vma_check 0.00 +0.1 0.08 ± 30% perf-profile.self.cycles-pp.rcu_note_context_switch 0.00 +0.1 0.08 ± 24% perf-profile.self.cycles-pp.__save_stack_trace 0.00 +0.1 0.08 ± 16% perf-profile.self.cycles-pp.clear_buddies 0.00 +0.1 0.08 ± 14% perf-profile.self.cycles-pp.__enqueue_entity 0.10 ± 31% +0.1 0.17 ± 13% perf-profile.self.cycles-pp.security_mmap_addr 0.04 ± 58% +0.1 0.12 ± 32% perf-profile.self.cycles-pp.selinux_vm_enough_memory 0.00 +0.1 0.08 ± 34% perf-profile.self.cycles-pp.free_pgtables 0.09 ± 13% +0.1 0.17 ± 18% perf-profile.self.cycles-pp.unlink_anon_vmas 0.00 +0.1 0.08 ± 10% perf-profile.self.cycles-pp.rb_insert_color_cached 0.00 +0.1 0.08 ± 31% perf-profile.self.cycles-pp.get_cpu_device 0.04 ± 58% +0.1 0.12 ± 22% perf-profile.self.cycles-pp.selinux_mmap_addr 0.00 +0.1 0.08 ± 10% perf-profile.self.cycles-pp.vma_adjust_trans_huge 0.00 +0.1 0.08 ± 15% perf-profile.self.cycles-pp.tick_check_broadcast_expired 0.05 ± 8% +0.1 0.14 ± 33% perf-profile.self.cycles-pp.userfaultfd_unmap_complete 0.00 +0.1 0.09 ± 17% perf-profile.self.cycles-pp.__vma_link_rb 0.00 +0.1 0.09 ± 16% perf-profile.self.cycles-pp.native_irq_return_iret 0.00 +0.1 0.09 ± 12% perf-profile.self.cycles-pp.ttwu_do_wakeup 0.00 +0.1 0.09 ± 13% perf-profile.self.cycles-pp.irq_work_needs_cpu 0.00 +0.1 0.09 ± 8% perf-profile.self.cycles-pp.update_ts_time_stats 0.00 +0.1 0.09 ± 32% perf-profile.self.cycles-pp.tick_nohz_tick_stopped 0.00 +0.1 0.09 ± 36% perf-profile.self.cycles-pp.stack_access_ok 0.00 +0.1 0.10 ± 18% perf-profile.self.cycles-pp.userfaultfd_unmap_prep 0.00 +0.1 0.10 ± 11% perf-profile.self.cycles-pp.__unwind_start 0.00 +0.1 0.10 ± 29% perf-profile.self.cycles-pp.pm_qos_request 0.50 ± 4% +0.1 0.60 ± 12% perf-profile.self.cycles-pp.vma_compute_subtree_gap 0.15 ± 12% +0.1 0.25 ± 9% perf-profile.self.cycles-pp.perf_iterate_sb 0.03 ±100% +0.1 0.12 ± 22% perf-profile.self.cycles-pp.rwsem_wake 0.00 +0.1 0.10 ± 23% perf-profile.self.cycles-pp.ttwu_do_activate 0.09 ± 17% +0.1 0.20 ± 22% perf-profile.self.cycles-pp.__rb_insert_augmented 0.00 +0.1 0.10 ± 17% perf-profile.self.cycles-pp.save_stack_address 0.00 +0.1 0.10 ± 8% perf-profile.self.cycles-pp.hrtimer_next_event_without 0.00 +0.1 0.10 ± 8% perf-profile.self.cycles-pp.tick_nohz_idle_exit 0.17 ± 28% +0.1 0.27 ± 9% perf-profile.self.cycles-pp.avc_has_perm_noaudit 0.01 ±173% +0.1 0.12 ± 15% perf-profile.self.cycles-pp.cap_vm_enough_memory 0.00 +0.1 0.11 ± 31% perf-profile.self.cycles-pp.sched_clock_cpu 0.09 ± 19% +0.1 0.20 ± 21% perf-profile.self.cycles-pp.arch_get_unmapped_area_topdown 0.00 +0.1 0.12 ± 33% perf-profile.self.cycles-pp.tick_nohz_get_sleep_length 0.00 +0.1 0.12 ± 10% perf-profile.self.cycles-pp.native_load_tls 0.00 +0.1 0.12 ± 33% perf-profile.self.cycles-pp.can_stop_idle_tick 0.00 +0.1 0.12 ± 15% perf-profile.self.cycles-pp.up_read 0.00 +0.1 0.13 ± 18% perf-profile.self.cycles-pp.__update_idle_core 0.00 +0.1 0.13 ± 33% perf-profile.self.cycles-pp.load_new_mm_cr3 0.00 +0.1 0.13 ± 12% perf-profile.self.cycles-pp.update_min_vruntime 0.32 ± 7% +0.1 0.45 ± 13% perf-profile.self.cycles-pp.___might_sleep 0.03 ±100% +0.1 0.16 ± 13% perf-profile.self.cycles-pp.cred_has_capability 0.11 ± 21% +0.1 0.24 ± 14% perf-profile.self.cycles-pp.get_unmapped_area 0.00 +0.1 0.14 ± 19% perf-profile.self.cycles-pp.put_prev_task_fair 0.00 +0.1 0.14 ± 30% perf-profile.self.cycles-pp.deactivate_task 0.00 +0.1 0.14 ± 46% perf-profile.self.cycles-pp.downgrade_write 0.09 ± 20% +0.1 0.23 ± 16% perf-profile.self.cycles-pp.perf_event_mmap_output 0.00 +0.1 0.15 ± 19% perf-profile.self.cycles-pp.pick_next_task_idle 0.00 +0.1 0.15 ± 13% perf-profile.self.cycles-pp.schedule_idle 0.00 +0.2 0.15 ± 24% perf-profile.self.cycles-pp.ttwu_stat 0.00 +0.2 0.15 ± 24% perf-profile.self.cycles-pp.cpu_startup_entry 0.01 ±173% +0.2 0.17 ± 28% perf-profile.self.cycles-pp.strlcpy 0.00 +0.2 0.16 ± 18% perf-profile.self.cycles-pp.schedule 0.18 ± 8% +0.2 0.34 ± 13% perf-profile.self.cycles-pp.__might_sleep 0.00 +0.2 0.16 ± 26% perf-profile.self.cycles-pp.rb_next 0.24 ± 6% +0.2 0.41 ± 11% perf-profile.self.cycles-pp.kmem_cache_alloc 0.18 ± 27% +0.2 0.35 ± 8% perf-profile.self.cycles-pp.vma_merge 0.00 +0.2 0.18 ± 12% perf-profile.self.cycles-pp.sched_ttwu_pending 0.00 +0.2 0.18 ± 22% perf-profile.self.cycles-pp.rcu_eqs_enter 0.00 +0.2 0.18 ± 12% perf-profile.self.cycles-pp.orc_find 0.00 +0.2 0.18 ± 18% perf-profile.self.cycles-pp.__hrtimer_next_event_base 0.00 +0.2 0.18 ± 12% perf-profile.self.cycles-pp.rcu_eqs_exit 0.00 +0.2 0.19 ± 18% perf-profile.self.cycles-pp.__list_del_entry_valid 0.01 ±173% +0.2 0.21 ± 20% perf-profile.self.cycles-pp.__vma_rb_erase 0.00 +0.2 0.21 ± 27% perf-profile.self.cycles-pp.get_next_timer_interrupt 0.00 +0.2 0.22 ± 13% perf-profile.self.cycles-pp.rcu_idle_exit 0.00 +0.2 0.22 ± 25% perf-profile.self.cycles-pp.__orc_find 0.00 +0.2 0.22 ± 21% perf-profile.self.cycles-pp.update_rq_clock 0.00 +0.2 0.22 ± 28% perf-profile.self.cycles-pp.menu_reflect 0.00 +0.2 0.23 ± 27% perf-profile.self.cycles-pp.__rwsem_mark_wake 0.00 +0.2 0.23 ± 21% perf-profile.self.cycles-pp.nr_iowait_cpu 0.00 +0.2 0.24 ± 13% perf-profile.self.cycles-pp.account_entity_dequeue 0.00 +0.2 0.24 ± 3% perf-profile.self.cycles-pp.tick_nohz_next_event 0.00 +0.2 0.24 ± 10% perf-profile.self.cycles-pp.call_cpuidle 0.25 ± 5% +0.2 0.49 ± 9% perf-profile.self.cycles-pp.perf_event_mmap 0.00 +0.2 0.25 ± 5% perf-profile.self.cycles-pp.rb_erase_cached 0.00 +0.2 0.25 ± 16% perf-profile.self.cycles-pp.pick_next_entity 0.38 ± 9% +0.2 0.63 ± 7% perf-profile.self.cycles-pp.__x64_sys_brk 0.00 +0.2 0.25 ± 7% perf-profile.self.cycles-pp.put_prev_entity 0.00 +0.3 0.27 ± 14% perf-profile.self.cycles-pp.activate_task 0.00 +0.3 0.28 ± 8% perf-profile.self.cycles-pp.get_iowait_load 0.24 ± 7% +0.3 0.52 ± 13% perf-profile.self.cycles-pp.__do_munmap 0.00 +0.3 0.28 ± 5% perf-profile.self.cycles-pp.cpuidle_enter_state 0.00 +0.3 0.29 ± 14% perf-profile.self.cycles-pp.account_entity_enqueue 0.00 +0.3 0.29 ± 7% perf-profile.self.cycles-pp.ktime_get 0.00 +0.3 0.33 ± 12% perf-profile.self.cycles-pp.check_preempt_curr 0.00 +0.3 0.33 ± 7% perf-profile.self.cycles-pp.available_idle_cpu 0.00 +0.3 0.33 ± 8% perf-profile.self.cycles-pp.__account_scheduler_latency 0.00 +0.3 0.35 ± 4% perf-profile.self.cycles-pp.__calc_delta 0.37 ± 5% +0.4 0.73 ± 6% perf-profile.self.cycles-pp.unmap_page_range 0.01 ±173% +0.4 0.45 ± 3% perf-profile.self.cycles-pp.wake_up_q 0.00 +0.4 0.44 ± 15% perf-profile.self.cycles-pp.dequeue_task_fair 0.12 ± 13% +0.4 0.56 ± 12% perf-profile.self.cycles-pp.__indirect_thunk_start 0.00 +0.5 0.46 ± 32% perf-profile.self.cycles-pp.resched_curr 0.00 +0.5 0.48 ± 10% perf-profile.self.cycles-pp.___perf_sw_event 0.01 ±173% +0.5 0.51 ± 14% perf-profile.self.cycles-pp.read_tsc 0.06 ± 62% +0.5 0.58 ± 12% perf-profile.self.cycles-pp.wake_q_add 0.44 ± 26% +0.6 0.99 ± 24% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath 0.02 ±173% +0.6 0.58 ± 13% perf-profile.self.cycles-pp.switch_mm_irqs_off 0.01 ±173% +0.6 0.59 ± 17% perf-profile.self.cycles-pp.update_curr 0.00 +0.6 0.59 ± 17% perf-profile.self.cycles-pp.dequeue_entity 0.04 ±106% +0.6 0.66 ± 6% perf-profile.self.cycles-pp.native_write_msr 0.00 +0.6 0.62 ± 13% perf-profile.self.cycles-pp.reweight_entity 0.00 +0.6 0.65 ± 13% perf-profile.self.cycles-pp.__next_timer_interrupt 0.23 ± 11% +0.7 0.89 ± 13% perf-profile.self.cycles-pp._raw_spin_lock 0.00 +0.7 0.66 ± 10% perf-profile.self.cycles-pp.enqueue_task_fair 0.01 ±173% +0.7 0.69 ± 4% perf-profile.self.cycles-pp.finish_task_switch 0.00 +0.7 0.69 ± 8% perf-profile.self.cycles-pp.__update_load_avg_se 0.02 ±173% +0.8 0.80 ± 2% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore 0.01 ±173% +0.8 0.80 ± 5% perf-profile.self.cycles-pp.__update_load_avg_cfs_rq 0.00 +0.8 0.78 ± 5% perf-profile.self.cycles-pp.select_task_rq_fair 0.00 +0.8 0.80 ± 11% perf-profile.self.cycles-pp.unwind_next_frame 0.00 +0.8 0.83 ± 9% perf-profile.self.cycles-pp.find_next_bit 0.07 ± 17% +0.9 0.97 ± 9% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.01 ±173% +0.9 0.96 ± 7% perf-profile.self.cycles-pp.update_cfs_group 0.03 ±105% +1.0 0.98 ± 8% perf-profile.self.cycles-pp.set_next_entity 0.02 ±173% +1.0 1.01 ± 7% perf-profile.self.cycles-pp.pick_next_task_fair 0.03 ±105% +1.0 1.04 ± 8% perf-profile.self.cycles-pp.__switch_to_asm 0.04 ±103% +1.1 1.10 ± 9% perf-profile.self.cycles-pp.update_load_avg 0.01 ±173% +1.2 1.18 ± 7% perf-profile.self.cycles-pp.do_idle 0.01 ±173% +1.2 1.18 ± 5% perf-profile.self.cycles-pp.__switch_to 0.04 ±107% +1.2 1.28 ± 7% perf-profile.self.cycles-pp.enqueue_entity 0.01 ±173% +1.3 1.31 ± 14% perf-profile.self.cycles-pp.native_sched_clock 0.07 ± 28% +1.5 1.60 ± 6% perf-profile.self.cycles-pp.try_to_wake_up 0.08 ± 33% +1.7 1.81 ± 9% perf-profile.self.cycles-pp.menu_select 0.10 ± 43% +2.2 2.32 ± 9% perf-profile.self.cycles-pp.__sched_text_start 0.22 ± 44% +3.8 4.05 ± 6% perf-profile.self.cycles-pp.poll_idle 0.88 ± 20% +29.7 30.58 ± 5% perf-profile.self.cycles-pp.intel_idle will-it-scale.per_thread_ops 220000 +-+----------------------------------------------------------------+ |. + + + +. + + +. :+ + .+. + + | 200000 +-+ +. + + .+ : + +. + + +. .+. + + .+ + + + | 180000 +-+ + + + .+. : + + +. .+ + + + +| | + + + + | 160000 +-+ | | | 140000 +-+ | | | 120000 +-+ | 100000 +-O | | | 80000 O-+ O O O O | | O O O O O O O O O O O O O O O O O O O | 60000 +-+----------------------------------------------------------------+ will-it-scale.workload 1.8e+06 +-+---------------------------------------------------------------+ | .+ + .+ .+ + .+. .+. | 1.6e+06 +-+ + + + .+ +.+ + .+.+ + .+. + :.+ + + + | | +.+ + + +. + +.+ +.+ +. .+ + + + +| 1.4e+06 +-+ + + + + | | | 1.2e+06 +-+ | | | 1e+06 +-+ | | | 800000 +-O | O O O | 600000 +-+ O O O O OO O O O O O O O O O O O O O | | O O | 400000 +-+---------------------------------------------------------------+ will-it-scale.time.user_time 60 +-+--------------------------------------------------------------------+ | | 55 +-+.+ .+ .+ + .+.. .+. | 50 +-+ + .+.. .+ +.+ + .+..+ + .+. : + .+ + + + | | +.+ + + .+. + +.+ +.+ +. : + + + +| 45 +-+ + + +.+ + | | | 40 +-+ | | | 35 +-+ | 30 +-O | O O O O O O O O | 25 +-+ O O O O O O O O O O O O | | O O O O | 20 +-+--------------------------------------------------------------------+ will-it-scale.time.system_time 2400 +-+------------------------------------------------------------------+ 2200 +-+.+.+.+.+. .+.+.+.+.+.+..+.+.+.+.+.+. .+. | | +.+.+.+.+ +.+ +.+.+.+.+.+.+.+.| 2000 +-+ | 1800 +-+ | | | 1600 +-+ | 1400 +-+ | 1200 +-+ | | | 1000 +-+ | 800 +-+ | | | 600 O-O O O O O O O O O O O O O O O O O O O O O O | 400 +-+---------------------------O----O---------------------------------+ will-it-scale.time.percent_of_cpu_this_job_got 800 +-+-------------------------------------------------------------------+ |.+.+.+.+.+.+.+. .+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+..+.+.+.+. .+.+.+.| 700 +-+ +. + | | | 600 +-+ | | | 500 +-+ | | | 400 +-+ | | | 300 +-+ | | | 200 O-O O O O O O | | O O O O O O O O O O O O O O O O O O | 100 +-+-------------------------------------------------------------------+ will-it-scale.time.voluntary_context_switches 1.6e+08 +-+---------------------------------------------------------------+ | O O O O O | 1.4e+08 +-O O O O O O O | 1.2e+08 O-+ O O OO O O O O | | O O O O | 1e+08 +-+ | | | 8e+07 +-+ | | | 6e+07 +-+ | 4e+07 +-+ + .| | .+. + :.+. .+.+.+.++.+.+.+.+.+.+.+ | 2e+07 +-+. .+.+.+ + + +.+. .+.+.+.+. .+.+.+ | | + + + | 0 +-+---------------------------------------------------------------+ will-it-scale.time.involuntary_context_switches 200000 +-+----------------------------------------------------------------+ 180000 +-+ + .+ : + + .+ + + .+ | | + : : + + : | 160000 +-+ : : : + + | 140000 +-+ + + +.: +.+. + + .+ + + | | + + : : + +.+ +.+.+ : + + | 120000 +-+ + : : : + :| 100000 +-+ + + :| 80000 +-+ | | | 60000 +-+ | 40000 +-+ | | | 20000 +-+ | 0 O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-OO-O-O-O-O-O-O-------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 7 months

7
9
0 / 0

Test monitoring on custom github repo

by Thomas Garnier

Hi, I am working on KASLR (PIE for x86_64). I previously used Kees (CCed) branches for lkp bot testing but someone told be I could ask you to add a custom github path to monitor all branches on it. I pushed my changes to: https://github.com/thgarnie/linux (kasrl_pie_v2 right now) Can you add it? Anything I need to do? Thanks, -- Thomas

1 year, 7 months

3
4
0 / 0

[bochs] df2052cc92: WARNING:at_drivers/gpu/drm/drm_mode_config.c:#drm_mode_config_cleanup

by kernel test robot

FYI, we noticed the following commit (built with gcc-4.9): commit: df2052cc922136e98a5c8d9730f6a4fd0a958c94 ("bochs: convert to drm_fb_helper_fbdev_setup/teardown") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: trinity with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 768M caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +-----------------------------------------------------------------------+------------+------------+ | | 70c0ef7bd3 | df2052cc92 | +-----------------------------------------------------------------------+------------+------------+ | boot_successes | 0 | 0 | | boot_failures | 4 | 4 | | WARNING:at_block/blk.h:#blk_register_queue | 4 | 4 | | EIP:blk_register_queue | 4 | 4 | | WARNING:at_arch/x86/mm/dump_pagetables.c:#note_page | 4 | 4 | | EIP:note_page | 4 | 4 | | WARNING:at_drivers/gpu/drm/drm_mode_config.c:#drm_mode_config_cleanup | 0 | 4 | | EIP:drm_mode_config_cleanup | 0 | 4 | +-----------------------------------------------------------------------+------------+------------+ [ 487.591733] WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/drm_mode_config.c:478 drm_mode_config_cleanup+0x270/0x290 [ 487.599141] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G T 4.19.0-rc1-00164-gdf2052c #1 [ 487.599141] EIP: drm_mode_config_cleanup+0x270/0x290 [ 487.599141] Code: 26 00 ff 70 28 68 37 44 91 42 e8 3b f2 ff ff 58 5a 8d 45 dc e8 f1 98 ff ff 85 c0 75 e5 8d 45 dc e8 75 99 ff ff e9 43 fe ff ff <0f> 0b e9 15 ff ff ff 0f 0b 8d 65 f4 5b 5e 5f 5d c3 90 90 90 90 90 [ 487.599141] EAX: 6b879614 EBX: 6ee7970c ECX: 6ee795c8 EDX: 6ee795c8 [ 487.599141] ESI: 6ee79724 EDI: 6ee79178 EBP: 40125e20 ESP: 40125df8 [ 487.599141] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00210206 [ 487.599141] CR0: 80050033 CR2: 00000000 CR3: 02d44000 CR4: 000006b0 [ 487.599141] Call Trace: [ 487.599141] ? debugfs_remove_recursive+0x15a/0x170 [ 487.599141] ? bochs_kms_fini+0x1e/0x30 [ 487.599141] ? bochs_unload+0x18/0x40 [ 487.599141] ? drm_dev_unregister+0x3a/0xd0 [ 487.599141] ? drm_put_dev+0x22/0x50 [ 487.599141] ? bochs_pci_remove+0xe/0x10 [ 487.599141] ? pci_device_remove+0x1c/0x50 [ 487.599141] ? really_probe+0x9a/0x2f0 [ 487.599141] ? driver_probe_device+0x101/0x120 [ 487.599141] ? __driver_attach+0xa1/0xb0 [ 487.599141] ? driver_probe_device+0x120/0x120 [ 487.599141] ? bus_for_each_dev+0x53/0x90 [ 487.599141] ? driver_attach+0x14/0x20 [ 487.599141] ? driver_probe_device+0x120/0x120 [ 487.599141] ? bus_add_driver+0x177/0x1f0 [ 487.599141] ? qxl_init+0x61/0x61 [ 487.599141] ? driver_register+0x51/0xe0 [ 487.599141] ? qxl_init+0x61/0x61 [ 487.599141] ? __pci_register_driver+0x4b/0x50 [ 487.599141] ? bochs_init+0x3e/0x57 [ 487.599141] ? do_one_initcall+0x83/0x1c7 [ 487.599141] ? smp_apic_timer_interrupt+0x48/0x80 [ 487.599141] ? apic_timer_interrupt+0xcb/0xd0 [ 487.599141] ? kernel_init_freeable+0x129/0x204 [ 487.599141] ? rest_init+0xe0/0xe0 [ 487.599141] ? kernel_init+0x8/0xf0 [ 487.599141] ? ret_from_fork+0x19/0x30 [ 487.599141] ---[ end trace 9072929f8a181f7a ]--- To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, Rong Chen

1 year, 8 months

4
9
0 / 0

[hugetlbfs] 9c83282117: vm-scalability.throughput -4.3% regression

by kernel test robot

Greeting, FYI, we noticed a -4.3% regression of vm-scalability.throughput due to commit: commit: 9c83282117778856d647ffc461c4aede2abb6742 ("[PATCH v3 1/2] hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization") url: https://github.com/0day-ci/linux/commits/Mike-Kravetz/hugetlbfs-use-i_mma... in testcase: vm-scalability on test machine: 104 threads Intel(R) Xeon(R) Platinum 8170 CPU @ 2.10GHz with 64G memory with following parameters: runtime: 300s size: 8T test: anon-cow-seq-hugetlb cpufreq_governor: performance ucode: 0x200004d test-description: The motivation behind this suite is to exercise functions and regions of the mm/ of the Linux kernel which are of interest to us. test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/ Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/size/tbox_group/test/testcase/ucode: gcc-7/performance/x86_64-rhel-7.2/debian-x86_64-2018-04-03.cgz/300s/8T/lkp-skl-2sp4/anon-cow-seq-hugetlb/vm-scalability/0x200004d commit: 0cd60eb1a7 ("dma-mapping: fix flags in dma_alloc_wc") 9c83282117 ("hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization") 0cd60eb1a7b5421e 9c83282117778856d647ffc461 ---------------- -------------------------- %stddev %change %stddev \ | \ 184494 -10.7% 164684 vm-scalability.median 20393229 -4.3% 19523319 vm-scalability.throughput 37986 ± 2% -4.3% 36341 ± 2% vm-scalability.time.involuntary_context_switches 3670375 -1.0% 3635385 vm-scalability.time.minor_page_faults 5808 -9.9% 5236 vm-scalability.time.percent_of_cpu_this_job_got 10665 -6.4% 9980 vm-scalability.time.system_time 6873 -15.2% 5829 vm-scalability.time.user_time 1561119 +42.4% 2222959 vm-scalability.time.voluntary_context_switches 304034 ± 10% -15.5% 256985 ± 7% meminfo.DirectMap4k 2455420 +17.5% 2884045 softirqs.SCHED 15179 ± 57% -77.2% 3468 ±167% numa-numastat.node0.other_node 5069 ±171% +231.5% 16803 ± 34% numa-numastat.node1.other_node 58.25 -14.6% 49.75 vmstat.procs.r 13194 +33.3% 17592 vmstat.system.cs 30.81 +4.7 35.50 mpstat.cpu.idle% 0.00 ± 39% +0.0 0.00 ± 19% mpstat.cpu.soft% 22.13 -3.4 18.73 mpstat.cpu.usr% 1608 -9.5% 1454 turbostat.Avg_MHz 57.68 -5.5 52.16 turbostat.Busy% 42.17 +12.7% 47.54 turbostat.CPU%c1 1896 ± 10% -13.5% 1639 ± 12% slabinfo.UNIX.active_objs 1896 ± 10% -13.5% 1639 ± 12% slabinfo.UNIX.num_objs 512.00 ± 8% +18.8% 608.00 ± 5% slabinfo.ebitmap_node.active_objs 512.00 ± 8% +18.8% 608.00 ± 5% slabinfo.ebitmap_node.num_objs 832.00 ± 13% +23.1% 1024 ± 10% slabinfo.scsi_sense_cache.active_objs 832.00 ± 13% +23.1% 1024 ± 10% slabinfo.scsi_sense_cache.num_objs 1309088 -1.8% 1285325 proc-vmstat.nr_dirty_background_threshold 2621507 -1.8% 2573971 proc-vmstat.nr_dirty_threshold 13199577 -1.8% 12961837 proc-vmstat.nr_free_pages 1742 +1.8% 1774 proc-vmstat.nr_page_table_pages 22375 -2.8% 21752 proc-vmstat.nr_shmem 1259 ± 37% +61.5% 2033 ± 19% proc-vmstat.numa_huge_pte_updates 681268 ± 35% +59.1% 1084220 ± 19% proc-vmstat.numa_pte_updates 13983 -8.3% 12823 ± 4% proc-vmstat.pgactivate 0.05 +0.0 0.05 perf-stat.branch-miss-rate% 2.109e+09 +4.3% 2.2e+09 perf-stat.branch-misses 78.76 -1.9 76.88 perf-stat.cache-miss-rate% 1.113e+11 -2.9% 1.081e+11 perf-stat.cache-misses 3996996 +33.6% 5341757 perf-stat.context-switches 3.37 -9.0% 3.07 perf-stat.cpi 4.944e+13 -9.6% 4.471e+13 perf-stat.cpu-cycles 211278 +5.0% 221866 perf-stat.cpu-migrations 0.00 ± 7% +0.0 0.00 ± 5% perf-stat.dTLB-load-miss-rate% 49679544 ± 7% +17.5% 58377845 ± 4% perf-stat.dTLB-load-misses 0.00 ± 4% +0.0 0.00 ± 2% perf-stat.dTLB-store-miss-rate% 15180335 ± 4% +14.0% 17307062 ± 2% perf-stat.dTLB-store-misses 10.83 ± 3% -1.8 9.08 ± 3% perf-stat.iTLB-load-miss-rate% 44270724 ± 3% -8.4% 40569884 ± 2% perf-stat.iTLB-load-misses 3.644e+08 +11.5% 4.065e+08 perf-stat.iTLB-loads 331624 ± 3% +8.4% 359414 ± 2% perf-stat.instructions-per-iTLB-miss 0.30 +9.9% 0.33 perf-stat.ipc 51.92 +1.8 53.74 perf-stat.node-load-miss-rate% 1.48e+10 -6.0% 1.391e+10 perf-stat.node-loads 1.497e+10 -6.9% 1.394e+10 perf-stat.node-stores 10272 ± 14% -19.0% 8323 ± 13% sched_debug.cfs_rq:/.load.avg 7232660 ± 9% -20.1% 5782120 ± 10% sched_debug.cfs_rq:/.min_vruntime.max 0.52 ± 5% -18.9% 0.43 ± 5% sched_debug.cfs_rq:/.nr_running.avg 1.67 ± 10% -33.1% 1.12 ± 15% sched_debug.cfs_rq:/.nr_spread_over.avg 7.52 ± 10% -29.6% 5.29 ± 2% sched_debug.cfs_rq:/.runnable_load_avg.avg 10163 ± 13% -18.7% 8262 ± 13% sched_debug.cfs_rq:/.runnable_weight.avg 2147344 ± 11% -29.4% 1515179 ± 10% sched_debug.cfs_rq:/.spread0.avg 3673348 ± 11% -22.3% 2854166 ± 5% sched_debug.cfs_rq:/.spread0.max 396.82 ± 13% -26.6% 291.11 ± 4% sched_debug.cfs_rq:/.util_est_enqueued.avg 6.81 ± 4% -25.8% 5.05 sched_debug.cpu.cpu_load[0].avg 6.96 ± 6% -25.3% 5.20 ± 2% sched_debug.cpu.cpu_load[1].avg 7.01 ± 4% -23.0% 5.40 ± 2% sched_debug.cpu.cpu_load[2].avg 7.09 ± 3% -19.2% 5.73 ± 2% sched_debug.cpu.cpu_load[3].avg 54.42 ± 33% -55.2% 24.39 ± 9% sched_debug.cpu.cpu_load[3].max 8.94 ± 21% -33.4% 5.96 ± 5% sched_debug.cpu.cpu_load[3].stddev 7.34 ± 3% -15.0% 6.24 ± 2% sched_debug.cpu.cpu_load[4].avg 72.43 ± 16% -29.4% 51.15 ± 18% sched_debug.cpu.cpu_load[4].max 10.51 ± 8% -20.8% 8.32 ± 7% sched_debug.cpu.cpu_load[4].stddev 18364 ± 10% +26.5% 23240 ± 11% sched_debug.cpu.nr_switches.avg 12769 ± 11% +43.0% 18261 ± 13% sched_debug.cpu.nr_switches.min 17580 ± 10% +28.1% 22513 ± 11% sched_debug.cpu.sched_count.avg 12302 ± 10% +41.6% 17424 ± 11% sched_debug.cpu.sched_count.min 8539 ± 10% +29.3% 11037 ± 11% sched_debug.cpu.sched_goidle.avg 5806 ± 11% +43.1% 8309 ± 11% sched_debug.cpu.sched_goidle.min 8747 ± 10% +28.1% 11205 ± 11% sched_debug.cpu.ttwu_count.avg 17367 ± 11% +29.1% 22427 ± 6% sched_debug.cpu.ttwu_count.max 1788 ± 11% +90.2% 3402 ± 12% sched_debug.cpu.ttwu_count.stddev 0.77 ± 3% +0.2 0.95 ± 5% perf-profile.calltrace.cycles-pp.alloc_huge_page.hugetlb_cow.hugetlb_fault.handle_mm_fault.__do_page_fault 0.66 ± 4% +0.2 0.88 ± 5% perf-profile.calltrace.cycles-pp.alloc_surplus_huge_page.alloc_huge_page.hugetlb_cow.hugetlb_fault.handle_mm_fault 0.56 ± 6% +0.3 0.83 ± 5% perf-profile.calltrace.cycles-pp.alloc_fresh_huge_page.alloc_surplus_huge_page.alloc_huge_page.hugetlb_cow.hugetlb_fault 0.27 ±100% +0.5 0.73 ± 4% perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.alloc_fresh_huge_page.alloc_surplus_huge_page.alloc_huge_page 0.27 ±100% +0.5 0.74 ± 4% perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.alloc_fresh_huge_page.alloc_surplus_huge_page.alloc_huge_page.hugetlb_cow 0.56 ± 4% -0.2 0.32 ± 3% perf-profile.children.cycles-pp._raw_spin_lock 0.42 ± 4% -0.2 0.22 perf-profile.children.cycles-pp.release_pages 0.41 ± 3% -0.2 0.21 ± 2% perf-profile.children.cycles-pp.free_huge_page 0.42 ± 4% -0.2 0.23 ± 2% perf-profile.children.cycles-pp.arch_tlb_finish_mmu 0.42 ± 4% -0.2 0.23 ± 2% perf-profile.children.cycles-pp.tlb_flush_mmu_free 0.42 ± 4% -0.2 0.23 perf-profile.children.cycles-pp.tlb_finish_mmu 0.46 ± 4% -0.2 0.28 ± 2% perf-profile.children.cycles-pp.mmput 0.46 ± 4% -0.2 0.28 perf-profile.children.cycles-pp.__x64_sys_exit_group 0.46 ± 4% -0.2 0.28 perf-profile.children.cycles-pp.do_group_exit 0.46 ± 4% -0.2 0.28 perf-profile.children.cycles-pp.do_exit 0.45 ± 3% -0.2 0.28 ± 2% perf-profile.children.cycles-pp.exit_mmap 0.94 ± 3% -0.1 0.85 ± 4% perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 0.94 ± 3% -0.1 0.85 ± 4% perf-profile.children.cycles-pp.do_syscall_64 0.17 ± 4% -0.0 0.14 ± 3% perf-profile.children.cycles-pp.update_and_free_page 0.12 ± 5% +0.0 0.14 ± 5% perf-profile.children.cycles-pp.__account_scheduler_latency 0.08 ± 8% +0.0 0.10 ± 8% perf-profile.children.cycles-pp.sched_ttwu_pending 0.17 ± 6% +0.0 0.20 ± 2% perf-profile.children.cycles-pp.enqueue_entity 0.18 ± 6% +0.0 0.21 ± 3% perf-profile.children.cycles-pp.enqueue_task_fair 0.17 ± 4% +0.0 0.20 ± 8% perf-profile.children.cycles-pp.schedule 0.18 ± 6% +0.0 0.21 ± 2% perf-profile.children.cycles-pp.ttwu_do_activate 0.05 ± 9% +0.0 0.09 perf-profile.children.cycles-pp.prep_new_huge_page 0.16 ± 5% +0.0 0.20 ± 4% perf-profile.children.cycles-pp.io_serial_in 0.24 ± 5% +0.0 0.28 ± 6% perf-profile.children.cycles-pp.__schedule 0.03 ±100% +0.0 0.07 ± 10% perf-profile.children.cycles-pp.delay_tsc 0.18 ± 4% +0.1 0.24 ± 2% perf-profile.children.cycles-pp.serial8250_console_putchar 0.19 ± 6% +0.1 0.26 ± 3% perf-profile.children.cycles-pp.wait_for_xmitr 0.18 ± 5% +0.1 0.25 ± 2% perf-profile.children.cycles-pp.uart_console_write 0.20 ± 6% +0.1 0.27 ± 2% perf-profile.children.cycles-pp.serial8250_console_write 0.20 ± 18% +0.1 0.28 ± 5% perf-profile.children.cycles-pp._fini 0.20 ± 16% +0.1 0.28 ± 5% perf-profile.children.cycles-pp.devkmsg_write 0.20 ± 16% +0.1 0.28 ± 5% perf-profile.children.cycles-pp.printk_emit 0.26 ± 8% +0.1 0.34 ± 5% perf-profile.children.cycles-pp.__vfs_write 0.23 ± 12% +0.1 0.31 ± 5% perf-profile.children.cycles-pp.vprintk_emit 1.65 ± 4% +0.1 1.73 perf-profile.children.cycles-pp.__mutex_lock 0.22 ± 9% +0.1 0.30 ± 3% perf-profile.children.cycles-pp.console_unlock 0.22 ± 13% +0.1 0.30 ± 5% perf-profile.children.cycles-pp.write 0.26 ± 8% +0.1 0.35 ± 4% perf-profile.children.cycles-pp.ksys_write 0.26 ± 8% +0.1 0.35 ± 4% perf-profile.children.cycles-pp.vfs_write 0.59 ± 4% +0.1 0.68 ± 3% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath 0.93 ± 3% +0.2 1.12 ± 4% perf-profile.children.cycles-pp.alloc_huge_page 0.79 ± 2% +0.2 1.03 ± 4% perf-profile.children.cycles-pp.alloc_surplus_huge_page 0.60 ± 2% +0.3 0.88 ± 5% perf-profile.children.cycles-pp.__alloc_pages_nodemask 0.59 ± 2% +0.3 0.87 ± 5% perf-profile.children.cycles-pp.get_page_from_freelist 0.66 ± 2% +0.3 0.97 ± 4% perf-profile.children.cycles-pp.alloc_fresh_huge_page 0.15 ± 4% +0.3 0.48 ± 6% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 25.44 ± 6% -2.5 22.95 ± 10% perf-profile.self.cycles-pp.do_rw_once 0.46 ± 2% -0.0 0.41 ± 2% perf-profile.self.cycles-pp.get_page_from_freelist 0.17 ± 2% -0.0 0.14 ± 5% perf-profile.self.cycles-pp.update_and_free_page 0.15 ± 7% +0.0 0.20 ± 4% perf-profile.self.cycles-pp.io_serial_in 0.01 ±173% +0.1 0.06 ± 6% perf-profile.self.cycles-pp.delay_tsc 1.59 ± 3% +0.1 1.67 perf-profile.self.cycles-pp.mutex_spin_on_owner 0.58 ± 3% +0.1 0.68 ± 4% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath vm-scalability.time.user_time 7000 +-+------------------------------------------------------------------+ | : | 6000 O-+ O :O O O O O O O O O O | |: : | 5000 +-+ : | |: : | 4000 +-+ : | | : : | 3000 +-+ : | | : : | 2000 +-+: : | | : : | 1000 +-+: : | | : | 0 +-+------------------------------------------------------------------+ vm-scalability.time.system_time 12000 +-+-----------------------------------------------------------------+ | ..+...+... | 10000 O-+ O O...O...O...O...O...O...O. O O O...+...+...+...+...+...| | : | |: : | 8000 +-+ : | |: : | 6000 +-+ : | | : : | 4000 +-+ : | | : : | | : : | 2000 +-+: : | | : | 0 +-+-----------------------------------------------------------------+ vm-scalability.time.percent_of_cpu_this_job_got 6000 +-+------------------------------------------------------------------+ | : +. +.. +...+...+...+...+...+. | 5000 O-+ O :O O O O O O O O O O | |: : | |: : | 4000 +-+ : | | : : | 3000 +-+ : | | : : | 2000 +-+: : | | : : | | : : | 1000 +-+: : | | : | 0 +-+------------------------------------------------------------------+ vm-scalability.time.voluntary_context_switches 2.5e+06 +-+---------------------------------------------------------------+ | O O | O O O O O O O O O O | 2e+06 +-+ | | | | +...+...+..+...+...+...+...+...+...+...+..+...+...+...+...| 1.5e+06 +-+ : | |: : | 1e+06 +-+ : | | : : | | : : | 500000 +-+: : | | : : | | : | 0 +-+---------------------------------------------------------------+ vm-scalability.throughput 2.5e+07 +-+---------------------------------------------------------------+ | | | ..+...+... ..+... | 2e+07 O-+ O O...O...O..O. O O O...O...O...O...+..+...+. +...| | : | |: : | 1.5e+07 +-+ : | |: : | 1e+07 +-+ : | | : : | | : : | 5e+06 +-+: : | | : : | | : | 0 +-+---------------------------------------------------------------+ vm-scalability.median 200000 +-+----------------------------------------------------------------+ 180000 +-+ +...+...+...+...+...+...+..+...+...+...+...+...+...+...+...| O O O O O O O | 160000 +-+ O : O O O O | 140000 +-+ : | |: : | 120000 +-+ : | 100000 +-+ : | 80000 +-+ : | | : : | 60000 +-+: : | 40000 +-+: : | | : : | 20000 +-+ : | 0 +-+----------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Rong Chen

1 year, 8 months

2
1
0 / 0

4768ab44d7 ("x86/asm: Use CC_SET/CC_OUT in .."): WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:2803 lockdep_hardirqs_on

by kernel test robot

Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is https://github.com/0day-ci/linux/commits/Uros-Bizjak/x86-asm-Use-CC_SET-C... commit 4768ab44d72e992a1f00ecca2f48e2137b3e90d0 Author: Uros Bizjak <ubizjak(a)gmail.com> AuthorDate: Fri Dec 28 16:37:59 2018 +0100 Commit: 0day robot <lkp(a)intel.com> CommitDate: Sat Dec 29 00:53:11 2018 +0800 x86/asm: Use CC_SET/CC_OUT in percpu_cmpxchg16b_double Use CC_SET(z)/CC_OUT(z) instead of explicit setz instruction. Using these two defines, the compiler that supports generation of condition code outputs from inline assembly flags generates one conditional jump instruction, e.g: [lea (%rdi),%rsi callq this_cpu_cmpxchg16b_emu] -- or -- [cmpxchg16b %gs:(%rdi)] jne 199764 <kmem_cache_alloc+0x44> instead of [lea (%rdi),%rsi callq this_cpu_cmpxchg16b_emu] -- or -- [cmpxchg16b %gs:(%rdi)] sete %cl test %cl,%cl je 19ae04 <kmem_cache_alloc+0x44> The complication with percpu_cmpxchg16b_double is, that the definition defaults to the call to this_cpu_cmpxchg16b_emu library function, which (depending on X86_FEATURE_CX16 flag) is later patched with real cmpxchg16b instruction. To solve this complication, the patch changes this_cpu_cmpxchg16b_emu library function to return the result in ZF flag of %rflags register, instead of %al register. Please also note that instead of popf instruction (which restores flags register to a previously saved state), the patched function uses sti, but followed by a nop, which ends the inhibition of interrupts early. The patch also introduces alternative_io_tail definition. This definition can take a tail instruction, common to all alternatives. By using this definition, it is possible to remove setz from cmpxchg16b alternatives, saved in .altinstr_replacement section, thus saving a few bytes from the binary. Signed-off-by: Uros Bizjak <ubizjak(a)gmail.com> Cc: x86(a)kernel.org 00c569b567 Merge tag 'locks-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux 4768ab44d7 x86/asm: Use CC_SET/CC_OUT in percpu_cmpxchg16b_double +----------------------------------------------------------+------------+------------+ | | 00c569b567 | 4768ab44d7 | +----------------------------------------------------------+------------+------------+ | boot_successes | 32 | 0 | | boot_failures | 1 | 11 | | BUG:kernel_hang_in_test_stage | 1 | | | WARNING:at_kernel/locking/lockdep.c:#lockdep_hardirqs_on | 0 | 11 | | RIP:lockdep_hardirqs_on | 0 | 11 | | WARNING:at_init/main.c:#start_kernel | 0 | 11 | | RIP:start_kernel | 0 | 11 | +----------------------------------------------------------+------------+------------+ [ 1.491161] sysrq: sysrq always enabled. [ 1.566498] Memory: 208392K/523768K available (12291K kernel code, 3453K rwdata, 5060K rodata, 2324K init, 24148K bss, 87324K reserved, 0K cma-reserved) [ 1.566627] random: get_random_u64 called from __kmem_cache_create+0x31/0x579 with crng_init=0 [ 1.569125] ------------[ cut here ]------------ [ 1.569154] DEBUG_LOCKS_WARN_ON(unlikely(early_boot_irqs_disabled)) [ 1.569287] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:2803 lockdep_hardirqs_on+0xc5/0x19e [ 1.569321] Modules linked in: [ 1.569355] CPU: 0 PID: 0 Comm: swapper Not tainted 4.20.0-06429-g4768ab4 #1 [ 1.569382] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 1.569412] RIP: 0010:lockdep_hardirqs_on+0xc5/0x19e [ 1.569420] Code: 1f 00 85 c0 0f 84 f5 00 00 00 83 3d f0 37 68 01 00 0f 85 e8 00 00 00 48 c7 c6 22 80 1b 82 48 c7 c7 3e 16 1a 82 e8 87 d7 f9 ff <0f> 0b e9 ce 00 00 00 65 48 8b 04 25 00 4f 01 00 83 b8 04 0c 00 00 [ 1.569448] RSP: 0000:ffffffff82403d68 EFLAGS: 00010086 [ 1.569477] RAX: 0000000000000037 RBX: 0000000000000297 RCX: 0000000000000000 [ 1.569484] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff810e119a [ 1.569511] RBP: ffffffff81958451 R08: 0000000000000037 R09: ffffffff82403d00 [ 1.569518] R10: ffffffff82403d10 R11: 0000000000000000 R12: 00000000ffffffff [ 1.569545] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1.569553] FS: 0000000000000000(0000) GS:ffff88801dc00000(0000) knlGS:0000000000000000 [ 1.569607] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.569614] CR2: ffff888004401000 CR3: 0000000002413000 CR4: 00000000000006b0 [ 1.569641] Call Trace: [ 1.569680] _raw_read_unlock_irqrestore+0x3c/0x48 [ 1.569712] get_random_u64+0x8d/0x9c [ 1.569743] __kmem_cache_create+0x31/0x579 [ 1.569776] ? create_kmalloc_cache+0x31/0xb8 [ 1.569805] create_boot_cache+0x64/0x8a [ 1.569835] create_kmalloc_cache+0x6b/0xb8 [ 1.569845] new_kmalloc_cache+0x79/0x94 [ 1.569875] create_kmalloc_caches+0x32/0x139 [ 1.569907] kmem_cache_init+0xb5/0x14e [ 1.569939] start_kernel+0x29c/0x646 [ 1.569996] secondary_startup_64+0xa4/0xb0 [ 1.570006] irq event stamp: 0 [ 1.570034] hardirqs last enabled at (0): [<0000000000000000>] (null) [ 1.570061] hardirqs last disabled at (0): [<0000000000000000>] (null) [ 1.570067] softirqs last enabled at (0): [<0000000000000000>] (null) [ 1.570094] softirqs last disabled at (0): [<0000000000000000>] (null) # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD git bisect start 094cf30b8e2a1767b15a0646e58ce27ad3daff6f 8fe28cb58bcb235034b64cbbb7550a8a43fd88be -- git bisect bad f488ec5a70fea534f8573d4bb603a1fa2c668354 # 21:29 B 0 6 21 0 Merge 'linux-review/Alexander-Shiyan/gpu-ipu-v3-Fix-i-MX51-CSI-control-registers-offset/20181221-022057' into devel-hourly-2018122903 git bisect bad 7591f9794175009a64c07c661818b421ac0cd168 # 21:47 B 0 5 20 0 Merge 'linux-review/Ivan-Mironov/scsi-sd-Fix-cache_type_store/20181223-155445' into devel-hourly-2018122903 git bisect bad 560923dad07aa030470cbca0bb97b5e092ea7417 # 22:01 B 0 9 24 0 Merge 'linux-review/Miroslav-Benes/ring-buffer-Remove-unused-function-ring_buffer_page_len/20181228-214004' into devel-hourly-2018122903 git bisect good 1ba622a971846988d35988206b6a00659cd23ffe # 22:21 G 11 0 11 11 Merge 'kemi/rwsem_regression_debug' into devel-hourly-2018122903 git bisect bad 2366c2d9c80bb478e5df437de532b582256ee28d # 22:35 B 0 11 26 0 Merge 'linux-review/Lorenzo-Bianconi/mt76-mac-minor-optimizations-in-mt76x02_mac_tx_rate_val/20181228-180739' into devel-hourly-2018122903 git bisect good 1316c771fe984971f7f50bbabc562121651aec70 # 22:53 G 10 0 10 10 Merge 'linux-review/Yangtao-Li/csky-fix-refcount-leak-in-setup_smp/20181228-003905' into devel-hourly-2018122903 git bisect good 84473d4f2a5018c7dfcde97156f4c3b699216b65 # 23:10 G 11 0 11 11 Merge 'linux-review/Aditya-Pakki/net-phy-Add-a-return-value-check-on-bus-write/20181227-041720' into devel-hourly-2018122903 git bisect good 359a221175533a2335060fab7b54ca517508b304 # 23:32 G 11 0 11 11 Merge 'linux-review/Kangjie-Lu/net-marvell-fix-a-missing-check-of-acpi_match_device/20181226-194212' into devel-hourly-2018122903 git bisect bad 7188e3902d391c8933485d61428fdd9ec86d58a0 # 23:49 B 0 10 25 0 Merge 'linux-review/Uros-Bizjak/x86-asm-Use-CC_SET-CC_OUT-in-percpu_cmpxchg16b_double/20181229-005310' into devel-hourly-2018122903 git bisect good 0a95d7a1d68cd9b44a3f7e038ee52bad3ae865c6 # 00:04 G 11 0 11 11 Merge 'andersson-remoteproc/for-next' into devel-hourly-2018122903 git bisect bad 4768ab44d72e992a1f00ecca2f48e2137b3e90d0 # 00:19 B 0 3 18 0 x86/asm: Use CC_SET/CC_OUT in percpu_cmpxchg16b_double # first bad commit: [4768ab44d72e992a1f00ecca2f48e2137b3e90d0] x86/asm: Use CC_SET/CC_OUT in percpu_cmpxchg16b_double git bisect good 00c569b567c7f1f0da6162868fd02a9f29411805 # 00:50 G 32 0 0 0 Merge tag 'locks-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux # extra tests with debug options git bisect bad 4768ab44d72e992a1f00ecca2f48e2137b3e90d0 # 01:06 B 0 10 25 0 x86/asm: Use CC_SET/CC_OUT in percpu_cmpxchg16b_double # extra tests on HEAD of linux-devel/devel-hourly-2018122903 git bisect bad 094cf30b8e2a1767b15a0646e58ce27ad3daff6f # 01:07 B 0 343 361 0 0day head guard for 'devel-hourly-2018122903' # extra tests on tree/branch linux-review/Uros-Bizjak/x86-asm-Use-CC_SET-CC_OUT-in-percpu_cmpxchg16b_double/20181229-005310 git bisect bad 4768ab44d72e992a1f00ecca2f48e2137b3e90d0 # 01:10 B 0 11 26 0 x86/asm: Use CC_SET/CC_OUT in percpu_cmpxchg16b_double # extra tests with first bad commit reverted git bisect good 3fae91c5f623ad6f0118bc695733931861787317 # 01:43 G 11 0 1 1 Revert "x86/asm: Use CC_SET/CC_OUT in percpu_cmpxchg16b_double" --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/lkp Intel Corporation

1 year, 8 months

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[drm/fb] 0326312542: WARNING:at_drivers/gpu/drm/drm_fourcc.c:#drm_format_info

by kernel test robot

FYI, we noticed the following commit (built with gcc-5): commit: 032631254237dd6f9e19b921c67c2baca002f3c7 ("[PATCH v2] drm/fb-helper: Scale back depth to supported maximum") url: https://github.com/0day-ci/linux/commits/Linus-Walleij/drm-fb-helper-Scal... in testcase: trinity with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 512M caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +--------------------------------------------------------------------+------------+------------+ | | 00c569b567 | 0326312542 | +--------------------------------------------------------------------+------------+------------+ | boot_successes | 8 | 0 | | boot_failures | 0 | 4 | | WARNING:at_drivers/gpu/drm/drm_fourcc.c:#drm_format_info | 0 | 4 | | EIP:drm_format_info | 0 | 4 | | WARNING:at_drivers/gpu/drm/drm_framebuffer.c:#drm_framebuffer_init | 0 | 4 | | EIP:drm_framebuffer_init | 0 | 4 | +--------------------------------------------------------------------+------------+------------+ [ 87.210989] WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/drm_fourcc.c:269 drm_format_info+0x7b/0x90 [ 87.210989] CPU: 0 PID: 1 Comm: swapper Tainted: G T 4.20.0-06429-g0326312 #1 [ 87.210989] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 87.210989] EIP: drm_format_info+0x7b/0x90 [ 87.210989] Code: 63 e6 db 31 c9 e8 c5 73 7f ff 8d 65 f8 89 d8 5b 5e 5d c3 8d 74 26 00 6a 01 31 c9 ba 01 00 00 00 b8 40 63 e6 db e8 a5 73 7f ff <0f> 0b 31 db ba 01 00 00 00 58 eb c7 89 f6 8d bc 27 00 00 00 00 66 [ 87.210989] EAX: 00000001 EBX: 324c3058 ECX: 00000000 EDX: 00000001 [ 87.210989] ESI: 00000000 EDI: d6216800 EBP: df291c90 ESP: df291c84 [ 87.210989] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00210202 [ 87.210989] CR0: 80050033 CR2: 00000000 CR3: 1c074000 CR4: 000406b0 [ 87.210989] Call Trace: [ 87.210989] drm_get_format_info+0x38/0x40 [ 87.210989] drm_helper_mode_fill_fb_struct+0x1c/0x60 [ 87.210989] drm_gem_fb_alloc+0x3b/0xb0 [ 87.210989] drm_gem_fbdev_fb_create+0x83/0xb0 [ 87.210989] bochsfb_create+0x1ff/0x3f0 [ 87.210989] __drm_fb_helper_initial_config_and_unlock+0x263/0x490 [ 87.210989] drm_fb_helper_fbdev_setup+0x142/0x250 [ 87.210989] bochs_fbdev_init+0x22/0x30 [ 87.210989] bochs_pci_probe+0x166/0x180 [ 87.210989] pci_device_probe+0x92/0x110 [ 87.210989] really_probe+0x232/0x4c0 [ 87.210989] driver_probe_device+0x1a2/0x1f0 [ 87.210989] ? driver_probe_device+0x1a2/0x1f0 [ 87.210989] __driver_attach+0x149/0x150 [ 87.210989] ? __driver_attach+0x149/0x150 [ 87.210989] ? driver_probe_device+0x1f0/0x1f0 [ 87.210989] bus_for_each_dev+0x4b/0x90 [ 87.210989] ? bus_for_each_dev+0x4b/0x90 [ 87.210989] driver_attach+0x1c/0x30 [ 87.210989] ? driver_probe_device+0x1f0/0x1f0 [ 87.210989] bus_add_driver+0x23f/0x2b0 [ 87.210989] driver_register+0x56/0xf0 [ 87.210989] ? driver_register+0x56/0xf0 [ 87.210989] __pci_register_driver+0x3e/0x50 [ 87.210989] bochs_init+0x7a/0x8e [ 87.210989] do_one_initcall+0x92/0x329 [ 87.210989] ? psb_init+0x39/0x39 [ 87.210989] ? kernel_init_freeable+0x15a/0x3cc [ 87.210989] ? kernel_init_freeable+0x15a/0x3cc [ 87.210989] kernel_init_freeable+0x1cd/0x3cc [ 87.210989] ? schedule_tail+0x85/0xa0 [ 87.210989] ? rest_init+0xb0/0xb0 [ 87.210989] kernel_init+0xd/0x100 [ 87.210989] ret_from_fork+0x1e/0x30 [ 87.210989] ---[ end trace bc9f986410312392 ]--- To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, lkp

1 year, 8 months

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82f87d8e5b ("hack: allow spinning even if sem->owner is reader"): BUG: KASAN: user-memory-access in rwsem_optimistic_spin

by kernel test robot

Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is kemi/rwsem_regression_debug commit 82f87d8e5bb1dc0527aec4395e0cdb1e20efbc2d Author: Kemi Wang <kemi.wang(a)intel.com> AuthorDate: Fri Dec 28 10:14:22 2018 +0800 Commit: Kemi Wang <kemi.wang(a)intel.com> CommitDate: Fri Dec 28 10:14:22 2018 +0800 hack: allow spinning even if sem->owner is reader Signed-off-by: Kemi Wang <kemi.wang(a)intel.com> 9bc8039e71 mm: brk: downgrade mmap_sem to read when shrinking 82f87d8e5b hack: allow spinning even if sem->owner is reader +-----------------------------------------------------+------------+------------+ | | 9bc8039e71 | 82f87d8e5b | +-----------------------------------------------------+------------+------------+ | boot_successes | 33 | 0 | | boot_failures | 2 | 13 | | BUG:kernel_hang_in_boot-around-mounting-root_stage | 2 | 1 | | BUG:KASAN:user-memory-access_in_r | 0 | 10 | | BUG:unable_to_handle_kernel | 0 | 12 | | Oops:#[##] | 0 | 12 | | RIP:rwsem_optimistic_spin | 0 | 12 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 12 | | WARNING:at_kernel/locking/lockdep.c:#lock_downgrade | 0 | 2 | | RIP:lock_downgrade | 0 | 2 | +-----------------------------------------------------+------------+------------+ [ 224.469564] _warn_unseeded_randomness: 2 callbacks suppressed [ 224.480544] random: get_random_u64 called from arch_rnd+0x2e/0x50 with crng_init=1 [ 224.494512] random: get_random_u64 called from load_elf_binary+0x617/0x18ad with crng_init=1 [ 224.652238] random: get_random_u32 called from arch_setup_additional_pages+0x77/0xb0 with crng_init=1 [ 225.404635] ================================================================== [ 225.417736] BUG: KASAN: user-memory-access in rwsem_optimistic_spin+0xd0/0x270 [ 225.429691] Read of size 4 at addr 0000000000002463 by task udevd/799 [ 225.439737] [ 225.442818] CPU: 0 PID: 799 Comm: udevd Tainted: G T 4.19.0-06996-g82f87d8 #1 [ 225.457010] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 225.470745] Call Trace: [ 225.475738] dump_stack+0x7c/0xbb [ 225.481609] ? rwsem_optimistic_spin+0xd0/0x270 [ 225.489382] kasan_report+0x20e/0x360 [ 225.495987] rwsem_optimistic_spin+0xd0/0x270 [ 225.502728] rwsem_down_write_failed+0xd7/0x450 [ 225.510835] ? rwsem_down_read_failed_killable+0x3b0/0x3b0 [ 225.519394] ? mark_lock+0xb7/0x840 [ 225.524117] ? check_chain_key+0x17f/0x1e0 [ 225.529858] ? pvclock_clocksource_read+0xd0/0x180 [ 225.537147] ? sched_clock_cpu+0x30/0x130 [ 225.544015] ? find_held_lock+0xba/0xd0 [ 225.550860] ? path_openat+0x50a/0x11f0 [ 225.557537] ? call_rwsem_down_write_failed+0x13/0x20 [ 225.566217] call_rwsem_down_write_failed+0x13/0x20 [ 225.574540] ? lock_contended+0x5a2/0x5e0 [ 225.581507] down_write+0x8a/0xc0 [ 225.587246] path_openat+0x4b0/0x11f0 [ 225.593827] ? lookup_open+0x9e0/0x9e0 [ 225.600248] ? do_sys_open+0x19f/0x2b0 [ 225.606534] ? do_syscall_64+0x31d/0x510 [ 225.613426] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 225.621952] ? mark_lock+0xb7/0x840 [ 225.628534] ? check_chain_key+0x17f/0x1e0 [ 225.635921] ? pvclock_clocksource_read+0xd0/0x180 [ 225.644899] ? mark_lock+0xb7/0x840 [ 225.651603] ? check_chain_key+0x17f/0x1e0 [ 225.659446] ? pvclock_clocksource_read+0xd0/0x180 [ 225.668722] do_filp_open+0xf3/0x180 [ 225.675619] ? may_open_dev+0x50/0x50 [ 225.682943] ? check_flags+0x220/0x220 [ 225.690207] ? __lock_is_held+0x61/0xc0 [ 225.697980] do_sys_open+0x1ce/0x2b0 [ 225.704917] ? filp_open+0x50/0x50 [ 225.711495] ? mark_held_locks+0x1b/0xa0 [ 225.719143] ? trace_hardirqs_off_caller+0x4d/0x110 [ 225.728218] ? mark_held_locks+0x1b/0xa0 [ 225.735761] ? do_syscall_64+0xa5/0x510 [ 225.743217] do_syscall_64+0x31d/0x510 [ 225.750182] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 225.759321] RIP: 0033:0x7f3d2808feb0 [ 225.765900] Code: 48 8b 15 93 0f 2d 00 f7 d8 64 89 02 48 83 c8 ff c3 90 90 90 90 90 90 90 90 90 83 3d 2d 73 2d 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 2e b3 01 00 48 89 04 24 [ 225.798018] RSP: 002b:00007ffe3719fed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 225.811469] RAX: ffffffffffffffda RBX: 0000558a7c0d2fa0 RCX: 00007f3d2808feb0 [ 225.824659] RDX: 00000000000001b6 RSI: 0000000000080241 RDI: 00007ffe371a03a8 [ 225.837808] RBP: 00007ffe3719ff30 R08: 0000000000000000 R09: 0000558a7b9cf973 [ 225.850900] R10: 0000000000000003 R11: 0000000000000246 R12: 0000558a7b9cf971 [ 225.863999] R13: 00007ffe371a03a8 R14: 0000000000000004 R15: 0000558a7c0d2f80 [ 225.877442] ================================================================== [ 225.890825] Disabling lock debugging due to kernel taint [ 225.900971] BUG: unable to handle kernel paging request at 0000000000002463 [ 225.913702] PGD 0 P4D 0 [ 225.918433] Oops: 0000 [#1] SMP KASAN [ 225.925341] CPU: 0 PID: 799 Comm: udevd Tainted: G B T 4.19.0-06996-g82f87d8 #1 [ 225.940632] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 225.956907] RIP: 0010:rwsem_optimistic_spin+0xd0/0x270 [ 225.966395] Code: 48 8d 43 68 48 89 c7 48 89 45 c8 e8 7a eb 17 00 4c 8b 63 68 c6 45 d7 01 4d 85 e4 74 1b 49 8d bc 24 60 24 00 00 e8 60 ea 17 00 <41> 8b 84 24 60 24 00 00 85 c0 0f 95 45 d7 e8 ad cc 01 00 85 c0 74 [ 225.999911] RSP: 0018:ffff88001ee1f958 EFLAGS: 00010286 [ 226.009468] RAX: ffff88001f20c800 RBX: ffff88001f0b1040 RCX: ffffffff81165c01 [ 226.022432] RDX: 0000000000000003 RSI: dffffc0000000000 RDI: ffffffff82ccfc78 [ 226.035458] RBP: ffff88001ee1f9a0 R08: fffffbfff0598626 R09: fffffbfff0598626 [ 226.048420] R10: 0000000000000001 R11: fffffbfff0598625 R12: 0000000000000003 [ 226.061446] R13: ffff88001ee1fe01 R14: ffff88001f20c800 R15: 1ffff10003dc3f3a [ 226.074540] FS: 00007f3d289a97c0(0000) GS:ffff880018e00000(0000) knlGS:0000000000000000 [ 226.088767] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 226.099420] CR2: 0000000000002463 CR3: 00000000125d0000 CR4: 00000000000006b0 [ 226.112422] Call Trace: [ 226.117246] rwsem_down_write_failed+0xd7/0x450 [ 226.125735] ? rwsem_down_read_failed_killable+0x3b0/0x3b0 [ 226.135821] ? mark_lock+0xb7/0x840 [ 226.142326] ? check_chain_key+0x17f/0x1e0 [ 226.149946] ? pvclock_clocksource_read+0xd0/0x180 [ 226.158862] ? sched_clock_cpu+0x30/0x130 [ 226.166279] ? find_held_lock+0xba/0xd0 [ 226.173539] ? path_openat+0x50a/0x11f0 [ 226.180730] ? call_rwsem_down_write_failed+0x13/0x20 [ 226.190063] call_rwsem_down_write_failed+0x13/0x20 [ 226.199137] ? lock_contended+0x5a2/0x5e0 [ 226.206564] down_write+0x8a/0xc0 [ 226.211762] _warn_unseeded_randomness: 12 callbacks suppressed [ 226.211828] random: get_random_u64 called from arch_rnd+0x2e/0x50 with crng_init=1 [ 226.212882] path_openat+0x4b0/0x11f0 [ 226.231688] random: get_random_u64 called from load_elf_binary+0x617/0x18ad with crng_init=1 [ 226.244793] ? lookup_open+0x9e0/0x9e0 [ 226.244836] ? do_sys_open+0x19f/0x2b0 [ 226.244898] ? do_syscall_64+0x31d/0x510 [ 226.286017] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 226.295583] ? mark_lock+0xb7/0x840 [ 226.301251] ? check_chain_key+0x17f/0x1e0 [ 226.307216] ? pvclock_clocksource_read+0xd0/0x180 [ 226.307457] random: get_random_u32 called from arch_setup_additional_pages+0x77/0xb0 with crng_init=1 [ 226.314085] ? mark_lock+0xb7/0x840 [ 226.314146] ? check_chain_key+0x17f/0x1e0 [ 226.314211] ? pvclock_clocksource_read+0xd0/0x180 [ 226.314308] do_filp_open+0xf3/0x180 [ 226.356247] ? may_open_dev+0x50/0x50 [ 226.362686] ? check_flags+0x220/0x220 [ 226.369460] ? __lock_is_held+0x61/0xc0 [ 226.376040] do_sys_open+0x1ce/0x2b0 [ 226.381782] ? filp_open+0x50/0x50 [ 226.387064] ? mark_held_locks+0x1b/0xa0 [ 226.393572] ? trace_hardirqs_off_caller+0x4d/0x110 [ 226.401741] ? mark_held_locks+0x1b/0xa0 [ 226.408125] ? do_syscall_64+0xa5/0x510 [ 226.414537] do_syscall_64+0x31d/0x510 [ 226.420959] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 226.428767] RIP: 0033:0x7f3d2808feb0 [ 226.435254] Code: 48 8b 15 93 0f 2d 00 f7 d8 64 89 02 48 83 c8 ff c3 90 90 90 90 90 90 90 90 90 83 3d 2d 73 2d 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 2e b3 01 00 48 89 04 24 [ 226.461914] RSP: 002b:00007ffe3719fed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 226.472089] RAX: ffffffffffffffda RBX: 0000558a7c0d2fa0 RCX: 00007f3d2808feb0 [ 226.481617] RDX: 00000000000001b6 RSI: 0000000000080241 RDI: 00007ffe371a03a8 [ 226.491311] RBP: 00007ffe3719ff30 R08: 0000000000000000 R09: 0000558a7b9cf973 [ 226.500834] R10: 0000000000000003 R11: 0000000000000246 R12: 0000558a7b9cf971 [ 226.510397] R13: 00007ffe371a03a8 R14: 0000000000000004 R15: 0000558a7c0d2f80 [ 226.519862] Modules linked in: [ 226.523849] CR2: 0000000000002463 [ 226.528156] ---[ end trace 3763cfdadd4f489a ]--- [ 226.534380] RIP: 0010:rwsem_optimistic_spin+0xd0/0x270 # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD git bisect start 29edf42dff090551a6838e139a0b8205833d1687 8fe28cb58bcb235034b64cbbb7550a8a43fd88be -- git bisect bad f2e342347a3b0db291f287373cef6cfe0810b47a # 01:33 B 0 11 26 0 Merge 'linux-review/Mathieu-Malaterre/clk-Use-__printf-markup-to-silence-compiler/20181219-090054' into devel-hourly-2018122818 git bisect bad a32fd1f788c34f3a3f22cdc1d0fc2652fdd7677b # 02:13 B 0 10 25 0 Merge 'linux-review/Tetsuo-Handa/memcg-killed-threads-should-not-invoke-memcg-OOM-killer/20181226-205210' into devel-hourly-2018122818 git bisect bad e3e238124fd7744596531f1d76f934be7f4e3aaa # 02:29 B 0 9 25 1 Merge 'linux-review/Yangtao-Li/clk-armada-xp-fix-refcount-leak-in-axp_clk_init/20181227-025452' into devel-hourly-2018122818 git bisect bad 5e6c9923d64eada5d66a5d4714f645accd6c6a98 # 02:45 B 0 4 19 0 Merge 'linux-review/Yangtao-Li/clk-ti-fix-refcount-leak-in-ti_dt_clocks_register/20181226-221559' into devel-hourly-2018122818 git bisect good c03910493dbb1be9de7f3bef15fa9614b551b945 # 03:13 G 10 0 0 0 Merge 'linux-review/Pavel-Machek/mfd-ti-lmu-fix-typo/20181228-041345' into devel-hourly-2018122818 git bisect good 15f897a7c0009b90e8ee974d5e86c94731eb9515 # 03:38 G 11 0 0 0 Merge 'linux-review/Srinath-Mannam/nvmem-bcm-ocotp-Add-ACPI-support-to-BCM-OCOTP/20181227-114103' into devel-hourly-2018122818 git bisect bad bc13d5cab0f904e03c92e0f8592610815ee9df09 # 09:53 B 0 1 16 0 Merge 'linux-review/Siva-Rebbagondla/rsi-add-support-for-hardware-scan-offload/20181227-175637' into devel-hourly-2018122818 git bisect good 82ba36a2883e55f9a7fe888a496b2536597fd7ce # 10:19 G 11 0 0 0 Merge 'linux-review/huhai/arm64-lib-add-accelerated-do_csum-for-arm64/20181228-155335' into devel-hourly-2018122818 git bisect bad 4f4857b2df0602c14a79df402d84df2a4038ceeb # 10:37 B 0 1 16 0 Merge 'kemi/rwsem_regression_debug' into devel-hourly-2018122818 git bisect good 51a102f8682cdaa1d711f76eec24998637d6b5bb # 11:05 G 11 0 0 0 Merge 'jkirsher-net-queue/master' into devel-hourly-2018122818 git bisect bad 82f87d8e5bb1dc0527aec4395e0cdb1e20efbc2d # 11:30 B 0 1 17 1 hack: allow spinning even if sem->owner is reader # first bad commit: [82f87d8e5bb1dc0527aec4395e0cdb1e20efbc2d] hack: allow spinning even if sem->owner is reader git bisect good 9bc8039e715da3b53dbac89525323a9f2f69b7b5 # 11:59 G 30 0 0 0 mm: brk: downgrade mmap_sem to read when shrinking # extra tests with debug options git bisect bad 82f87d8e5bb1dc0527aec4395e0cdb1e20efbc2d # 12:22 B 0 2 17 0 hack: allow spinning even if sem->owner is reader # extra tests on HEAD of linux-devel/devel-hourly-2018122818 git bisect bad 29edf42dff090551a6838e139a0b8205833d1687 # 12:27 B 0 13 31 0 0day head guard for 'devel-hourly-2018122818' # extra tests on tree/branch kemi/rwsem_regression_debug git bisect bad 82f87d8e5bb1dc0527aec4395e0cdb1e20efbc2d # 12:29 B 0 12 28 1 hack: allow spinning even if sem->owner is reader # extra tests with first bad commit reverted git bisect good 8346876dc4ea7f68ec0d661f651f136069606a9a # 13:07 G 11 0 0 0 Revert "hack: allow spinning even if sem->owner is reader" --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/lkp Intel Corporation

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LKP December 2018