July 2016 - 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?

2 years, 7 months

4
4
0 / 0

[lkp] [sctp] a6c2f79287: netperf.Throughput_Mbps -37.2% regression

by kernel test robot

FYI, we noticed a -37.2% regression of netperf.Throughput_Mbps due to commit: commit a6c2f792873aff332a4689717c3cd6104f46684c ("sctp: implement prsctp TTL policy") https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master in testcase: netperf on test machine: 4 threads Ivy Bridge with 8G memory with following parameters: ip: ipv4 runtime: 300s nr_threads: 200% cluster: cs-localhost send_size: 10K test: SCTP_STREAM_MANY cpufreq_governor: performance 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. Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml ========================================================================================= cluster/compiler/cpufreq_governor/ip/kconfig/nr_threads/rootfs/runtime/send_size/tbox_group/test/testcase: cs-localhost/gcc-6/performance/ipv4/x86_64-rhel-7.2/200%/debian-x86_64-2015-02-07.cgz/300s/10K/lkp-ivb-d02/SCTP_STREAM_MANY/netperf commit: 826d253d57 ("sctp: add SCTP_PR_ASSOC_STATUS on sctp sockopt") a6c2f79287 ("sctp: implement prsctp TTL policy") 826d253d57b11f69 a6c2f792873aff332a4689717c ---------------- -------------------------- %stddev %change %stddev \ | \ 3923 ± 0% -37.2% 2462 ± 0% netperf.Throughput_Mbps 11701 ± 14% -21.9% 9139 ± 11% meminfo.AnonHugePages 642.75 ± 7% +15.8% 744.00 ± 6% slabinfo.kmalloc-512.active_objs 4993 ± 2% +14.6% 5724 ± 2% slabinfo.kmalloc-64.active_objs 4993 ± 2% +14.6% 5724 ± 2% slabinfo.kmalloc-64.num_objs 9.00 ± 0% -77.8% 2.00 ± 0% vmstat.procs.r 112616 ± 1% +19.0% 133959 ± 0% vmstat.system.cs 4053 ± 0% +6.3% 4309 ± 0% vmstat.system.in 16466114 ± 0% -37.4% 10307354 ± 0% softirqs.NET_RX 72067 ± 10% -63.5% 26326 ± 4% softirqs.RCU 8598 ± 4% +954.6% 90677 ± 1% softirqs.SCHED 605899 ± 0% -45.7% 329111 ± 0% softirqs.TIMER 2529 ± 4% -15.1% 2147 ± 1% proc-vmstat.nr_alloc_batch 1.48e+08 ± 0% -37.1% 93059843 ± 0% proc-vmstat.numa_hit 1.48e+08 ± 0% -37.1% 93059842 ± 0% proc-vmstat.numa_local 3.742e+08 ± 1% -36.9% 2.362e+08 ± 0% proc-vmstat.pgalloc_dma32 4.733e+08 ± 0% -36.6% 3e+08 ± 0% proc-vmstat.pgalloc_normal 8.476e+08 ± 0% -36.7% 5.362e+08 ± 0% proc-vmstat.pgfree 99.31 ± 0% -44.6% 55.03 ± 0% turbostat.%Busy 3269 ± 0% -44.8% 1804 ± 1% turbostat.Avg_MHz 0.05 ± 17% +51942.1% 24.72 ± 1% turbostat.CPU%c1 0.64 ± 0% +3067.3% 20.11 ± 3% turbostat.CPU%c6 20.20 ± 0% -24.7% 15.21 ± 0% turbostat.CorWatt 0.12 ± 39% +1906.4% 2.36 ± 3% turbostat.Pkg%pc2 0.46 ± 10% +1696.7% 8.27 ± 6% turbostat.Pkg%pc6 37.54 ± 0% -14.5% 32.11 ± 0% turbostat.PkgWatt 76510 ± 46% +2.6e+05% 1.954e+08 ± 1% cpuidle.C1-IVB.time 6742 ± 76% +2.9e+05% 19860856 ± 1% cpuidle.C1-IVB.usage 19769 ± 17% +5414.4% 1090172 ± 3% cpuidle.C1E-IVB.time 151.00 ± 11% +4024.8% 6228 ± 3% cpuidle.C1E-IVB.usage 33074 ± 14% +5086.6% 1715442 ± 2% cpuidle.C3-IVB.time 114.50 ± 14% +6075.1% 7070 ± 3% cpuidle.C3-IVB.usage 8006184 ± 0% +4066.3% 3.336e+08 ± 2% cpuidle.C6-IVB.time 8874 ± 0% +4197.0% 381350 ± 2% cpuidle.C6-IVB.usage 476.75 ± 92% +77822.9% 371497 ± 12% cpuidle.POLL.time 46.25 ±144% +30824.3% 14302 ± 3% cpuidle.POLL.usage 1.758e+11 ± 2% -38.4% 1.083e+11 ± 1% perf-stat.L1-dcache-load-misses 6.405e+11 ± 0% -29.7% 4.5e+11 ± 0% perf-stat.L1-dcache-loads 6.28e+09 ± 3% -30.0% 4.398e+09 ± 0% perf-stat.L1-dcache-prefetch-misses 8.142e+10 ± 1% -39.3% 4.941e+10 ± 0% perf-stat.L1-dcache-store-misses 5.32e+11 ± 0% -33.6% 3.533e+11 ± 1% perf-stat.L1-dcache-stores 5.59e+10 ± 1% -19.3% 4.512e+10 ± 1% perf-stat.L1-icache-load-misses 5.199e+10 ± 0% -42.1% 3.01e+10 ± 1% perf-stat.LLC-loads 3.066e+10 ± 1% -42.4% 1.765e+10 ± 1% perf-stat.LLC-prefetches 5.282e+10 ± 0% -40.0% 3.168e+10 ± 1% perf-stat.LLC-stores 2.776e+11 ± 0% -27.9% 2.002e+11 ± 0% perf-stat.branch-instructions 3.861e+09 ± 1% -50.8% 1.9e+09 ± 0% perf-stat.branch-load-misses 2.772e+11 ± 0% -27.8% 2e+11 ± 0% perf-stat.branch-loads 3.864e+09 ± 1% -50.8% 1.9e+09 ± 0% perf-stat.branch-misses 1.179e+11 ± 0% -43.9% 6.61e+10 ± 0% perf-stat.bus-cycles 7.126e+09 ± 16% -96.8% 2.272e+08 ± 4% perf-stat.cache-misses 1.173e+11 ± 0% -38.0% 7.278e+10 ± 0% perf-stat.cache-references 34232822 ± 1% +19.1% 40787311 ± 0% perf-stat.context-switches 3.897e+12 ± 0% -44.2% 2.174e+12 ± 1% perf-stat.cpu-cycles 12019 ± 35% +306.6% 48867 ± 1% perf-stat.cpu-migrations 4.069e+09 ± 20% -58.4% 1.694e+09 ± 46% perf-stat.dTLB-load-misses 6.421e+11 ± 0% -30.3% 4.476e+11 ± 1% perf-stat.dTLB-loads 5.285e+08 ± 22% -71.0% 1.531e+08 ± 17% perf-stat.dTLB-store-misses 5.32e+11 ± 0% -33.4% 3.544e+11 ± 1% perf-stat.dTLB-stores 3.735e+08 ± 5% -48.5% 1.923e+08 ± 3% perf-stat.iTLB-load-misses 1.803e+08 ± 52% +662.4% 1.374e+09 ± 2% perf-stat.iTLB-loads 1.505e+12 ± 0% -29.3% 1.064e+12 ± 0% perf-stat.instructions 339045 ± 0% +4.4% 354068 ± 0% perf-stat.minor-faults 339041 ± 0% +4.4% 354062 ± 0% perf-stat.page-faults 3.892e+12 ± 0% -43.9% 2.182e+12 ± 0% perf-stat.ref-cycles 3.052e+12 ± 0% -25.9% 2.261e+12 ± 0% perf-stat.stalled-cycles-frontend 34082 ± 16% -65.5% 11746 ± 83% sched_debug.cfs_rq:/.MIN_vruntime.avg 75047 ± 3% -58.2% 31366 ± 63% sched_debug.cfs_rq:/.MIN_vruntime.max 34069 ± 3% -59.9% 13660 ± 61% sched_debug.cfs_rq:/.MIN_vruntime.stddev 1403286 ± 4% -34.9% 913870 ± 14% sched_debug.cfs_rq:/.load.avg 1874082 ± 7% -27.9% 1352098 ± 19% sched_debug.cfs_rq:/.load.max 1041057 ± 0% -66.8% 345620 ± 35% sched_debug.cfs_rq:/.load.min 1063 ± 0% -54.6% 482.93 ± 15% sched_debug.cfs_rq:/.load_avg.avg 1204 ± 3% -20.6% 956.50 ± 4% sched_debug.cfs_rq:/.load_avg.max 939.38 ± 0% -86.4% 127.33 ± 31% sched_debug.cfs_rq:/.load_avg.min 104.33 ± 19% +238.6% 353.26 ± 6% sched_debug.cfs_rq:/.load_avg.stddev 34082 ± 16% -65.5% 11746 ± 83% sched_debug.cfs_rq:/.max_vruntime.avg 75047 ± 3% -58.2% 31366 ± 63% sched_debug.cfs_rq:/.max_vruntime.max 34069 ± 3% -59.9% 13660 ± 61% sched_debug.cfs_rq:/.max_vruntime.stddev 74820 ± 0% -10.4% 67031 ± 1% sched_debug.cfs_rq:/.min_vruntime.min 1091 ± 7% +378.3% 5221 ± 13% sched_debug.cfs_rq:/.min_vruntime.stddev 1.35 ± 3% -35.4% 0.88 ± 14% sched_debug.cfs_rq:/.nr_running.avg 1.83 ± 6% -29.5% 1.29 ± 19% sched_debug.cfs_rq:/.nr_running.max 1.00 ± 0% -66.7% 0.33 ± 35% sched_debug.cfs_rq:/.nr_running.min 943.28 ± 0% -61.0% 367.80 ± 20% sched_debug.cfs_rq:/.runnable_load_avg.avg 991.42 ± 1% -21.2% 781.00 ± 14% sched_debug.cfs_rq:/.runnable_load_avg.max 894.88 ± 1% -90.9% 81.46 ± 20% sched_debug.cfs_rq:/.runnable_load_avg.min 39.07 ± 31% +667.7% 299.97 ± 16% sched_debug.cfs_rq:/.runnable_load_avg.stddev -794.96 ±-98% +505.2% -4810 ±-18% sched_debug.cfs_rq:/.spread0.avg -1935 ±-42% +442.8% -10508 ±-13% sched_debug.cfs_rq:/.spread0.min 1092 ± 7% +378.0% 5221 ± 13% sched_debug.cfs_rq:/.spread0.stddev 949.60 ± 0% -41.6% 554.85 ± 12% sched_debug.cfs_rq:/.util_avg.avg 976.08 ± 1% -9.9% 879.71 ± 1% sched_debug.cfs_rq:/.util_avg.max 925.83 ± 0% -67.0% 305.25 ± 20% sched_debug.cfs_rq:/.util_avg.min 18.71 ± 30% +1151.4% 234.18 ± 6% sched_debug.cfs_rq:/.util_avg.stddev 2.60 ± 9% -66.3% 0.88 ± 62% sched_debug.cpu.clock.stddev 2.60 ± 9% -66.3% 0.88 ± 62% sched_debug.cpu.clock_task.stddev 941.57 ± 1% -65.8% 322.38 ± 25% sched_debug.cpu.cpu_load[0].avg 992.46 ± 1% -29.5% 700.08 ± 25% sched_debug.cpu.cpu_load[0].max 880.67 ± 4% -93.3% 58.58 ± 64% sched_debug.cpu.cpu_load[0].min 44.14 ± 46% +526.2% 276.40 ± 28% sched_debug.cpu.cpu_load[0].stddev 944.76 ± 0% -59.6% 381.23 ± 17% sched_debug.cpu.cpu_load[1].avg 980.25 ± 1% -17.5% 808.25 ± 5% sched_debug.cpu.cpu_load[1].max 900.79 ± 1% -89.8% 91.67 ± 28% sched_debug.cpu.cpu_load[1].min 30.83 ± 30% +904.7% 309.72 ± 7% sched_debug.cpu.cpu_load[1].stddev 941.95 ± 0% -61.6% 361.83 ± 18% sched_debug.cpu.cpu_load[2].avg 974.08 ± 1% -18.0% 798.29 ± 5% sched_debug.cpu.cpu_load[2].max 899.00 ± 1% -90.8% 82.42 ± 24% sched_debug.cpu.cpu_load[2].min 29.59 ± 30% +946.9% 309.73 ± 6% sched_debug.cpu.cpu_load[2].stddev 935.02 ± 0% -63.1% 344.78 ± 19% sched_debug.cpu.cpu_load[3].avg 965.83 ± 1% -18.7% 785.50 ± 5% sched_debug.cpu.cpu_load[3].max 893.04 ± 1% -91.8% 73.21 ± 26% sched_debug.cpu.cpu_load[3].min 28.77 ± 29% +976.4% 309.70 ± 6% sched_debug.cpu.cpu_load[3].stddev 922.55 ± 0% -64.2% 330.33 ± 19% sched_debug.cpu.cpu_load[4].avg 951.75 ± 1% -20.0% 761.71 ± 6% sched_debug.cpu.cpu_load[4].max 880.96 ± 0% -92.8% 63.08 ± 31% sched_debug.cpu.cpu_load[4].min 27.92 ± 26% +988.8% 304.04 ± 6% sched_debug.cpu.cpu_load[4].stddev 1302 ± 1% -15.7% 1097 ± 7% sched_debug.cpu.curr->pid.avg 798.04 ± 5% -70.5% 235.67 ± 39% sched_debug.cpu.curr->pid.min 812.92 ± 1% +22.9% 999.29 ± 4% sched_debug.cpu.curr->pid.stddev 1359793 ± 6% -34.4% 892053 ± 17% sched_debug.cpu.load.avg 1830834 ± 4% -28.5% 1308664 ± 19% sched_debug.cpu.load.max 1041241 ± 0% -62.6% 389138 ± 37% sched_debug.cpu.load.min 0.00 ± 21% +77.1% 0.00 ± 7% sched_debug.cpu.next_balance.stddev 150630 ± 0% -24.2% 114118 ± 0% sched_debug.cpu.nr_load_updates.avg 151833 ± 0% -21.6% 119037 ± 0% sched_debug.cpu.nr_load_updates.max 149812 ± 0% -27.3% 108953 ± 1% sched_debug.cpu.nr_load_updates.min 745.51 ± 1% +502.7% 4492 ± 14% sched_debug.cpu.nr_load_updates.stddev 2.60 ± 1% -52.8% 1.23 ± 17% sched_debug.cpu.nr_running.avg 3.79 ± 3% -39.6% 2.29 ± 39% sched_debug.cpu.nr_running.max 1.62 ± 8% -74.4% 0.42 ± 34% sched_debug.cpu.nr_running.min 4242583 ± 1% +20.1% 5094187 ± 0% sched_debug.cpu.nr_switches.avg 3880089 ± 1% +24.6% 4835277 ± 1% sched_debug.cpu.nr_switches.min 487080 ± 18% -61.6% 186796 ± 37% sched_debug.cpu.nr_switches.stddev netperf.Throughput_Mbps 4000 ++-----------------------------------*--*-----*--*--*--*--*-*--*-----+ | .*.. .*..*..* *. | 3500 *+.*..* *.*..*..*. *. | 3000 ++ : : | | : O | 2500 O+ O O: O : O O O O O O O O O O O O O O | : : O O O O O | 2000 ++ : : | | : : | 1500 ++ : : | 1000 ++ : : | | : : | 500 ++ :: | | : | 0 ++-------*------------------------------------O----------------------+ [*] bisect-good sample [O] bisect-bad sample Thanks, Xiaolong

5 years, 3 months

4
35
0 / 0

[lkp] [f2fs] ec795418c4: fsmark.app_overhead -36.3% regression

by kernel test robot

FYI, we noticed a -36.3% regression of fsmark.files_per_sec due to commit: commit ec795418c41850056feb956534edf059dc1155d4 ("f2fs: use percpu_rw_semaphore") https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git dev-test in testcase: fsmark on test machine: 72 threads Haswell-EP with 128G memory with following parameters: cpufreq_governor=performance/disk=1SSD/filesize=8K/fs=f2fs/iterations=8/nr_directories=16d/nr_files_per_directory=256fpd/nr_threads=4/sync_method=fsyncBeforeClose/test_size=72G 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. Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/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/disk/filesize/fs/iterations/kconfig/nr_directories/nr_files_per_directory/nr_threads/rootfs/sync_method/tbox_group/test_size/testcase: gcc-4.9/performance/1SSD/8K/f2fs/8/x86_64-rhel/16d/256fpd/4/debian-x86_64-2015-02-07.cgz/fsyncBeforeClose/lkp-hsw-ep4/72G/fsmark commit: 3bdad3c7ee ("f2fs: skip to check the block address of node page") ec795418c4 ("f2fs: use percpu_rw_semaphore") 3bdad3c7ee72a76e ec795418c41850056feb956534 ---------------- -------------------------- fail:runs %reproduction fail:runs | | | %stddev %change %stddev \ | \ 29551 ± 0% -36.3% 18831 ± 2% fsmark.files_per_sec 6696820 ± 1% +4.2% 6977582 ± 1% fsmark.app_overhead 322.28 ± 0% +55.9% 502.37 ± 2% fsmark.time.elapsed_time 322.28 ± 0% +55.9% 502.37 ± 2% fsmark.time.elapsed_time.max 2.756e+08 ± 0% -7.6% 2.545e+08 ± 0% fsmark.time.file_system_outputs 8913 ± 6% +106.8% 18436 ± 10% fsmark.time.involuntary_context_switches 320.80 ± 0% -2.8% 311.80 ± 0% fsmark.time.percent_of_cpu_this_job_got 993.78 ± 0% +53.2% 1522 ± 2% fsmark.time.system_time 41.53 ± 2% +11.1% 46.13 ± 1% fsmark.time.user_time 21551618 ± 0% +123.2% 48100377 ± 2% fsmark.time.voluntary_context_switches 51036 ± 6% +77.9% 90812 ± 0% meminfo.Dirty 25742 ± 49% +100.4% 51585 ± 31% numa-meminfo.node1.Dirty 6517 ± 49% +97.7% 12887 ± 31% numa-vmstat.node1.nr_dirty 311222 ± 2% +55.6% 484246 ± 7% softirqs.RCU 483341 ± 3% +34.2% 648718 ± 3% softirqs.SCHED 849788 ± 7% +27.1% 1079705 ± 5% softirqs.TIMER 8.48 ± 0% -5.0% 8.06 ± 0% turbostat.%Busy 223.50 ± 0% -7.5% 206.80 ± 0% turbostat.Avg_MHz 1.02 ± 3% +45.2% 1.48 ± 2% turbostat.CPU%c3 7420 ± 2% -18.1% 6079 ± 1% slabinfo.ext4_extent_status.active_objs 7420 ± 2% -18.1% 6079 ± 1% slabinfo.ext4_extent_status.num_objs 7676 ± 1% -12.8% 6694 ± 3% slabinfo.kmalloc-1024.active_objs 8005 ± 1% -12.3% 7016 ± 2% slabinfo.kmalloc-1024.num_objs 270.00 ± 1% -36.3% 172.10 ± 3% vmstat.io.bi 424174 ± 0% -40.5% 252324 ± 2% vmstat.io.bo 137171 ± 0% +42.3% 195205 ± 0% vmstat.system.cs 129727 ± 0% -16.4% 108410 ± 0% vmstat.system.in 115.40 ±127% -96.1% 4.50 ±189% proc-vmstat.kswapd_high_wmark_hit_quickly 12748 ± 6% +78.2% 22719 ± 0% proc-vmstat.nr_dirty 6239 ± 9% +26.7% 7908 ± 13% proc-vmstat.numa_hint_faults 5275 ± 8% +22.6% 6469 ± 11% proc-vmstat.numa_hint_faults_local 746512 ± 2% +50.2% 1121580 ± 2% proc-vmstat.pgfault 2.331e+08 ± 1% +179.8% 6.522e+08 ± 5% cpuidle.C1-HSW.time 21473442 ± 0% +125.2% 48347668 ± 2% cpuidle.C1-HSW.usage 13731593 ± 4% +1207.0% 1.795e+08 ± 16% cpuidle.C1E-HSW.time 123887 ± 3% +1237.9% 1657510 ± 18% cpuidle.C1E-HSW.usage 2.173e+08 ± 4% +181.6% 6.12e+08 ± 4% cpuidle.C3-HSW.time 479301 ± 5% +441.1% 2593727 ± 5% cpuidle.C3-HSW.usage 2.042e+10 ± 0% +52.9% 3.123e+10 ± 2% cpuidle.C6-HSW.time 22061045 ± 0% +53.2% 33801151 ± 2% cpuidle.C6-HSW.usage 1.131e+08 ± 10% +44.0% 1.629e+08 ± 7% cpuidle.POLL.time 448858 ± 0% +25.2% 561850 ± 0% cpuidle.POLL.usage 6.679e+10 ± 3% +43.1% 9.559e+10 ± 2% perf-stat.L1-dcache-load-misses 7.043e+11 ± 3% +44.4% 1.017e+12 ± 4% perf-stat.L1-dcache-loads 4.012e+11 ± 5% +44.5% 5.798e+11 ± 4% perf-stat.L1-dcache-stores 3.657e+10 ± 5% +26.0% 4.609e+10 ± 4% perf-stat.L1-icache-load-misses 3.534e+10 ± 3% +39.2% 4.919e+10 ± 5% perf-stat.LLC-loads 5.802e+09 ± 8% +77.5% 1.03e+10 ± 6% perf-stat.LLC-stores 5.894e+11 ± 4% +44.1% 8.49e+11 ± 4% perf-stat.branch-instructions 5.843e+09 ± 5% +61.1% 9.414e+09 ± 5% perf-stat.branch-load-misses 5.715e+11 ± 3% +51.0% 8.631e+11 ± 4% perf-stat.branch-loads 5.885e+09 ± 7% +69.6% 9.981e+09 ± 8% perf-stat.branch-misses 1.778e+11 ± 5% +44.2% 2.564e+11 ± 4% perf-stat.bus-cycles 7.914e+10 ± 6% +38.9% 1.099e+11 ± 5% perf-stat.cache-references 44519137 ± 0% +121.2% 98455560 ± 2% perf-stat.context-switches 4.758e+12 ± 3% +42.2% 6.765e+12 ± 4% perf-stat.cpu-cycles 422734 ± 2% +113.7% 903275 ± 3% perf-stat.cpu-migrations 1.278e+10 ± 3% +35.1% 1.727e+10 ± 4% perf-stat.dTLB-load-misses 7.029e+11 ± 4% +44.3% 1.014e+12 ± 5% perf-stat.dTLB-loads 2.886e+08 ± 4% +139.9% 6.922e+08 ± 5% perf-stat.dTLB-store-misses 3.995e+11 ± 8% +45.3% 5.807e+11 ± 3% perf-stat.dTLB-stores 1.312e+09 ± 3% +47.0% 1.928e+09 ± 7% perf-stat.iTLB-loads 2.929e+12 ± 2% +38.8% 4.064e+12 ± 6% perf-stat.instructions 729801 ± 2% +50.8% 1100280 ± 2% perf-stat.minor-faults 1.071e+08 ± 8% +14.4% 1.224e+08 ± 6% perf-stat.node-store-misses 729789 ± 2% +50.8% 1100266 ± 2% perf-stat.page-faults 3.922e+12 ± 3% +47.2% 5.775e+12 ± 4% perf-stat.ref-cycles 6824 ± 0% +55.1% 10582 ± 0% sched_debug.cfs_rq:/.exec_clock.avg 28828 ± 12% +49.1% 42992 ± 6% sched_debug.cfs_rq:/.exec_clock.max 30.22 ± 11% +95.5% 59.08 ± 7% sched_debug.cfs_rq:/.exec_clock.min 7993 ± 6% +50.5% 12033 ± 2% sched_debug.cfs_rq:/.exec_clock.stddev 25.89 ± 18% -28.4% 18.53 ± 21% sched_debug.cfs_rq:/.load_avg.avg 7337 ± 0% +51.6% 11121 ± 0% sched_debug.cfs_rq:/.min_vruntime.avg 34800 ± 9% +43.2% 49818 ± 5% sched_debug.cfs_rq:/.min_vruntime.max 8745 ± 6% +46.1% 12773 ± 2% sched_debug.cfs_rq:/.min_vruntime.stddev 5.47 ± 16% -29.1% 3.88 ± 15% sched_debug.cfs_rq:/.runnable_load_avg.avg -32162 ±-16% +39.6% -44890 ±-13% sched_debug.cfs_rq:/.spread0.min 8745 ± 6% +46.1% 12774 ± 2% sched_debug.cfs_rq:/.spread0.stddev 652.00 ± 6% -22.9% 502.53 ± 6% sched_debug.cfs_rq:/.util_avg.max 138.58 ± 6% -22.4% 107.57 ± 3% sched_debug.cfs_rq:/.util_avg.stddev 203456 ± 0% +44.0% 293000 ± 0% sched_debug.cpu.clock.avg 203461 ± 0% +44.0% 293005 ± 0% sched_debug.cpu.clock.max 203450 ± 0% +44.0% 292994 ± 0% sched_debug.cpu.clock.min 203456 ± 0% +44.0% 293000 ± 0% sched_debug.cpu.clock_task.avg 203461 ± 0% +44.0% 293005 ± 0% sched_debug.cpu.clock_task.max 203450 ± 0% +44.0% 292994 ± 0% sched_debug.cpu.clock_task.min 21.62 ± 35% -36.8% 13.66 ± 28% sched_debug.cpu.cpu_load[3].stddev 336.16 ± 9% +23.4% 414.96 ± 8% sched_debug.cpu.curr->pid.avg 5526 ± 0% +38.9% 7674 ± 2% sched_debug.cpu.curr->pid.max 1227 ± 5% +31.3% 1611 ± 5% sched_debug.cpu.curr->pid.stddev 46943 ± 2% +55.3% 72908 ± 1% sched_debug.cpu.nr_load_updates.avg 70757 ± 3% +51.6% 107258 ± 3% sched_debug.cpu.nr_load_updates.max 31077 ± 12% +56.5% 48628 ± 12% sched_debug.cpu.nr_load_updates.min 10900 ± 4% +53.9% 16781 ± 3% sched_debug.cpu.nr_load_updates.stddev 305199 ± 0% +123.9% 683210 ± 0% sched_debug.cpu.nr_switches.avg 1286089 ± 12% +115.6% 2772732 ± 7% sched_debug.cpu.nr_switches.max 602.75 ± 5% +64.8% 993.43 ± 7% sched_debug.cpu.nr_switches.min 362058 ± 7% +117.3% 786749 ± 3% sched_debug.cpu.nr_switches.stddev 57.60 ± 13% +124.4% 129.24 ± 11% sched_debug.cpu.nr_uninterruptible.max -105.13 ±-13% +217.5% -333.79 ±-11% sched_debug.cpu.nr_uninterruptible.min 22.80 ± 5% +220.7% 73.11 ± 4% sched_debug.cpu.nr_uninterruptible.stddev 304847 ± 0% +124.1% 683016 ± 0% sched_debug.cpu.sched_count.avg 1283492 ± 12% +115.9% 2771349 ± 7% sched_debug.cpu.sched_count.max 373.43 ± 8% +109.1% 780.90 ± 7% sched_debug.cpu.sched_count.min 361891 ± 7% +117.4% 786838 ± 3% sched_debug.cpu.sched_count.stddev 151704 ± 0% +124.4% 340409 ± 0% sched_debug.cpu.sched_goidle.avg 639131 ± 12% +115.5% 1377132 ± 7% sched_debug.cpu.sched_goidle.max 148.13 ± 7% +104.1% 302.30 ± 7% sched_debug.cpu.sched_goidle.min 180189 ± 7% +117.6% 392032 ± 3% sched_debug.cpu.sched_goidle.stddev 152464 ± 0% +124.2% 341851 ± 0% sched_debug.cpu.ttwu_count.avg 931253 ± 13% +78.3% 1660600 ± 7% sched_debug.cpu.ttwu_count.max 201.32 ± 7% +91.7% 385.88 ± 4% sched_debug.cpu.ttwu_count.min 215408 ± 6% +95.3% 420609 ± 3% sched_debug.cpu.ttwu_count.stddev 106.18 ± 8% +89.1% 200.76 ± 4% sched_debug.cpu.ttwu_local.min 203453 ± 0% +44.0% 292997 ± 0% sched_debug.cpu_clk 200513 ± 0% +44.5% 289817 ± 0% sched_debug.ktime 0.17 ± 0% -46.7% 0.09 ± 49% sched_debug.rt_rq:/.rt_nr_running.max 0.02 ± 17% -44.8% 0.01 ± 53% sched_debug.rt_rq:/.rt_nr_running.stddev 203453 ± 0% +44.0% 292997 ± 0% sched_debug.sched_clk 3.58 ± 9% -42.2% 2.07 ± 34% perf-profile.cycles-pp.__alloc_percpu_gfp.__percpu_counter_init.f2fs_alloc_inode.alloc_inode.new_inode_pseudo 3.73 ± 5% -44.5% 2.07 ± 34% perf-profile.cycles-pp.__blk_mq_complete_request.blk_mq_complete_request.__nvme_process_cq.nvme_irq.handle_irq_event_percpu 0.93 ± 6% -41.0% 0.55 ± 35% perf-profile.cycles-pp.__f2fs_submit_merged_bio.f2fs_write_data_pages.do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range 0.90 ± 8% -93.3% 0.06 ±300% perf-profile.cycles-pp.__filemap_fdatawait_range.filemap_fdatawait_range.filemap_write_and_wait_range.f2fs_do_sync_file.f2fs_sync_file 6.88 ± 7% -30.3% 4.79 ± 33% perf-profile.cycles-pp.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.f2fs_sync_file.vfs_fsync_range 1.96 ± 8% -42.4% 1.13 ± 34% perf-profile.cycles-pp.__generic_file_write_iter.f2fs_file_write_iter.__vfs_write.vfs_write.sys_write 3.81 ± 5% -44.3% 2.12 ± 34% perf-profile.cycles-pp.__nvme_process_cq.nvme_irq.handle_irq_event_percpu.handle_irq_event.handle_edge_irq 3.68 ± 9% -42.2% 2.13 ± 34% perf-profile.cycles-pp.__percpu_counter_init.f2fs_alloc_inode.alloc_inode.new_inode_pseudo.new_inode 1.59 ± 7% -43.6% 0.90 ± 34% perf-profile.cycles-pp.__percpu_counter_sum.f2fs_balance_fs.f2fs_create.path_openat.do_filp_open 2.39 ± 9% -36.4% 1.52 ± 34% perf-profile.cycles-pp.__percpu_counter_sum.f2fs_balance_fs.f2fs_write_data_page.f2fs_write_cache_pages.f2fs_write_data_pages 2.79 ± 7% -40.8% 1.65 ± 34% perf-profile.cycles-pp.__vfs_write.vfs_write.sys_write.entry_SYSCALL_64_fastpath 2.91 ± 6% -45.2% 1.60 ± 34% perf-profile.cycles-pp.__wake_up.__wake_up_bit.end_page_writeback.f2fs_write_end_io.bio_endio 2.92 ± 6% -45.1% 1.61 ± 34% perf-profile.cycles-pp.__wake_up_bit.end_page_writeback.f2fs_write_end_io.bio_endio.blk_update_request 2.88 ± 6% -45.3% 1.57 ± 34% perf-profile.cycles-pp.__wake_up_common.__wake_up.__wake_up_bit.end_page_writeback.f2fs_write_end_io 0.98 ± 11% -62.2% 0.37 ± 81% perf-profile.cycles-pp.__writeback_inodes_wb.wb_writeback.wb_workfn.process_one_work.worker_thread 2.56 ± 7% -44.9% 1.41 ± 34% perf-profile.cycles-pp.activate_task.ttwu_do_activate.try_to_wake_up.default_wake_function.autoremove_wake_function 4.04 ± 8% -42.3% 2.33 ± 34% perf-profile.cycles-pp.alloc_inode.new_inode_pseudo.new_inode.f2fs_new_inode.f2fs_create 2.86 ± 6% -45.3% 1.56 ± 34% perf-profile.cycles-pp.autoremove_wake_function.wake_bit_function.__wake_up_common.__wake_up.__wake_up_bit 3.39 ± 6% -45.2% 1.86 ± 34% perf-profile.cycles-pp.bio_endio.blk_update_request.blk_mq_end_request.nvme_complete_rq.__blk_mq_complete_request 3.73 ± 5% -44.5% 2.07 ± 34% perf-profile.cycles-pp.blk_mq_complete_request.__nvme_process_cq.nvme_irq.handle_irq_event_percpu.handle_irq_event 3.65 ± 5% -44.7% 2.02 ± 34% perf-profile.cycles-pp.blk_mq_end_request.nvme_complete_rq.__blk_mq_complete_request.blk_mq_complete_request.__nvme_process_cq 3.50 ± 5% -45.2% 1.92 ± 34% perf-profile.cycles-pp.blk_update_request.blk_mq_end_request.nvme_complete_rq.__blk_mq_complete_request.blk_mq_complete_request 2.85 ± 6% -45.3% 1.56 ± 34% perf-profile.cycles-pp.default_wake_function.autoremove_wake_function.wake_bit_function.__wake_up_common.__wake_up 4.26 ± 6% -43.9% 2.39 ± 34% perf-profile.cycles-pp.do_IRQ.ret_from_intr.cpuidle_enter.call_cpuidle.cpu_startup_entry 20.48 ± 5% -21.1% 16.16 ± 34% perf-profile.cycles-pp.do_filp_open.do_sys_open.sys_open.entry_SYSCALL_64_fastpath 20.64 ± 5% -21.3% 16.25 ± 34% perf-profile.cycles-pp.do_sys_open.sys_open.entry_SYSCALL_64_fastpath 0.81 ± 18% -85.8% 0.11 ±200% perf-profile.cycles-pp.do_write_page.write_data_page.do_write_data_page.f2fs_write_data_page.f2fs_write_cache_pages 6.86 ± 7% -30.4% 4.78 ± 33% perf-profile.cycles-pp.do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.f2fs_sync_file 3.20 ± 6% -44.7% 1.77 ± 34% perf-profile.cycles-pp.end_page_writeback.f2fs_write_end_io.bio_endio.blk_update_request.blk_mq_end_request 2.54 ± 7% -44.7% 1.40 ± 33% perf-profile.cycles-pp.enqueue_task_fair.activate_task.ttwu_do_activate.try_to_wake_up.default_wake_function 3.88 ± 9% -42.5% 2.23 ± 34% perf-profile.cycles-pp.f2fs_alloc_inode.alloc_inode.new_inode_pseudo.new_inode.f2fs_new_inode 1.99 ± 5% -49.0% 1.01 ± 34% perf-profile.cycles-pp.f2fs_balance_fs.f2fs_create.path_openat.do_filp_open.do_sys_open 3.12 ± 9% -43.5% 1.76 ± 34% perf-profile.cycles-pp.f2fs_balance_fs.f2fs_write_data_page.f2fs_write_cache_pages.f2fs_write_data_pages.do_writepages 1.18 ± 6% -47.6% 0.62 ± 34% perf-profile.cycles-pp.f2fs_dentry_hash.find_in_level.f2fs_find_entry.f2fs_lookup.path_openat 2.73 ± 7% -41.1% 1.61 ± 34% perf-profile.cycles-pp.f2fs_file_write_iter.__vfs_write.vfs_write.sys_write.entry_SYSCALL_64_fastpath 7.86 ± 8% -52.0% 3.77 ± 34% perf-profile.cycles-pp.f2fs_find_entry.f2fs_lookup.path_openat.do_filp_open.do_sys_open 7.95 ± 8% -51.7% 3.84 ± 34% perf-profile.cycles-pp.f2fs_lookup.path_openat.do_filp_open.do_sys_open.sys_open 4.60 ± 7% -42.4% 2.65 ± 34% perf-profile.cycles-pp.f2fs_new_inode.f2fs_create.path_openat.do_filp_open.do_sys_open 1.12 ± 3% -41.5% 0.66 ± 35% perf-profile.cycles-pp.f2fs_wait_on_page_writeback.part.31.f2fs_wait_on_page_writeback.wait_on_node_pages_writeback.f2fs_do_sync_file.f2fs_sync_file 1.14 ± 3% -41.6% 0.67 ± 35% perf-profile.cycles-pp.f2fs_wait_on_page_writeback.wait_on_node_pages_writeback.f2fs_do_sync_file.f2fs_sync_file.vfs_fsync_range 5.46 ± 7% -27.3% 3.97 ± 34% perf-profile.cycles-pp.f2fs_write_cache_pages.f2fs_write_data_pages.do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range 4.81 ± 8% -25.6% 3.57 ± 34% perf-profile.cycles-pp.f2fs_write_data_page.f2fs_write_cache_pages.f2fs_write_data_pages.do_writepages.__filemap_fdatawrite_range 6.86 ± 7% -30.4% 4.77 ± 33% perf-profile.cycles-pp.f2fs_write_data_pages.do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file 3.38 ± 6% -45.1% 1.85 ± 34% perf-profile.cycles-pp.f2fs_write_end_io.bio_endio.blk_update_request.blk_mq_end_request.nvme_complete_rq 0.92 ± 9% -87.6% 0.11 ±201% perf-profile.cycles-pp.filemap_fdatawait_range.filemap_write_and_wait_range.f2fs_do_sync_file.f2fs_sync_file.vfs_fsync_range 8.18 ± 7% -35.5% 5.27 ± 34% perf-profile.cycles-pp.filemap_write_and_wait_range.f2fs_do_sync_file.f2fs_sync_file.vfs_fsync_range.do_fsync 1.28 ± 4% -65.3% 0.45 ± 66% perf-profile.cycles-pp.find_data_page.find_in_level.f2fs_find_entry.f2fs_lookup.path_openat 7.80 ± 8% -52.1% 3.74 ± 34% perf-profile.cycles-pp.find_in_level.f2fs_find_entry.f2fs_lookup.path_openat.do_filp_open 4.86 ± 9% -51.2% 2.37 ± 35% perf-profile.cycles-pp.find_target_dentry.find_in_level.f2fs_find_entry.f2fs_lookup.path_openat 1.80 ± 9% -43.4% 1.02 ± 33% perf-profile.cycles-pp.generic_perform_write.__generic_file_write_iter.f2fs_file_write_iter.__vfs_write.vfs_write 4.05 ± 6% -44.1% 2.26 ± 34% perf-profile.cycles-pp.handle_edge_irq.handle_irq.do_IRQ.ret_from_intr.cpuidle_enter 4.08 ± 6% -43.9% 2.29 ± 34% perf-profile.cycles-pp.handle_irq.do_IRQ.ret_from_intr.cpuidle_enter.call_cpuidle 3.92 ± 5% -44.0% 2.20 ± 34% perf-profile.cycles-pp.handle_irq_event.handle_edge_irq.handle_irq.do_IRQ.ret_from_intr 3.92 ± 5% -44.2% 2.19 ± 34% perf-profile.cycles-pp.handle_irq_event_percpu.handle_irq_event.handle_edge_irq.handle_irq.do_IRQ 1.57 ± 9% -43.7% 0.88 ± 35% perf-profile.cycles-pp.kthread.ret_from_fork 1.87 ± 9% -40.5% 1.11 ± 34% perf-profile.cycles-pp.memset_erms.__alloc_percpu_gfp.__percpu_counter_init.f2fs_alloc_inode.alloc_inode 4.10 ± 8% -42.4% 2.36 ± 34% perf-profile.cycles-pp.new_inode.f2fs_new_inode.f2fs_create.path_openat.do_filp_open 4.05 ± 8% -42.4% 2.33 ± 34% perf-profile.cycles-pp.new_inode_pseudo.new_inode.f2fs_new_inode.f2fs_create.path_openat 3.70 ± 5% -44.6% 2.05 ± 34% perf-profile.cycles-pp.nvme_complete_rq.__blk_mq_complete_request.blk_mq_complete_request.__nvme_process_cq.nvme_irq 3.83 ± 5% -44.3% 2.14 ± 34% perf-profile.cycles-pp.nvme_irq.handle_irq_event_percpu.handle_irq_event.handle_edge_irq.handle_irq 20.41 ± 6% -21.0% 16.12 ± 34% perf-profile.cycles-pp.path_openat.do_filp_open.do_sys_open.sys_open.entry_SYSCALL_64_fastpath 1.51 ± 10% -43.7% 0.85 ± 34% perf-profile.cycles-pp.pcpu_alloc.__alloc_percpu_gfp.__percpu_counter_init.f2fs_alloc_inode.alloc_inode 1.24 ± 10% -46.7% 0.66 ± 36% perf-profile.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork 1.57 ± 9% -43.7% 0.88 ± 35% perf-profile.cycles-pp.ret_from_fork 4.22 ± 6% -42.9% 2.41 ± 34% perf-profile.cycles-pp.ret_from_intr.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 20.66 ± 5% -21.3% 16.27 ± 34% perf-profile.cycles-pp.sys_open.entry_SYSCALL_64_fastpath 2.93 ± 7% -40.9% 1.73 ± 34% perf-profile.cycles-pp.sys_write.entry_SYSCALL_64_fastpath 2.82 ± 6% -45.2% 1.55 ± 34% perf-profile.cycles-pp.try_to_wake_up.default_wake_function.autoremove_wake_function.wake_bit_function.__wake_up_common 2.64 ± 6% -44.9% 1.45 ± 34% perf-profile.cycles-pp.ttwu_do_activate.try_to_wake_up.default_wake_function.autoremove_wake_function.wake_bit_function 2.88 ± 7% -41.2% 1.69 ± 34% perf-profile.cycles-pp.vfs_write.sys_write.entry_SYSCALL_64_fastpath 1.43 ± 3% -43.0% 0.82 ± 34% perf-profile.cycles-pp.wait_on_node_pages_writeback.f2fs_do_sync_file.f2fs_sync_file.vfs_fsync_range.do_fsync 2.86 ± 6% -45.2% 1.57 ± 34% perf-profile.cycles-pp.wake_bit_function.__wake_up_common.__wake_up.__wake_up_bit.end_page_writeback 1.05 ± 10% -51.3% 0.51 ± 51% perf-profile.cycles-pp.wb_workfn.process_one_work.worker_thread.kthread.ret_from_fork 1.05 ± 10% -51.3% 0.51 ± 51% perf-profile.cycles-pp.wb_writeback.wb_workfn.process_one_work.worker_thread.kthread 1.25 ± 10% -46.7% 0.66 ± 36% perf-profile.cycles-pp.worker_thread.kthread.ret_from_fork 0.94 ± 11% -62.2% 0.36 ± 81% perf-profile.cycles-pp.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback.wb_workfn.process_one_work 12602 ± 10% +605.7% 88933 ± 4% latency_stats.avg.f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range 117.20 ± 38% +14638.0% 17272 ± 10% latency_stats.avg.f2fs_sync_fs.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 6536 ± 74% latency_stats.avg.rcu_sync_enter.percpu_down_write.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 110089 ± 5% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_read_failed.get_node_info.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 123952 ± 2% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_read_failed.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 10543 ± 6% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_read_failed.get_node_info.[f2fs].write_data_page.[f2fs].do_write_data_page.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_fdatawrite.sync_dirty_inodes.[f2fs].write_checkpoint.[f2fs] 417255 ± 1% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_read_failed.get_node_info.[f2fs].write_data_page.[f2fs].do_write_data_page.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs] 96289 ± 4% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_read_failed.is_checkpointed_node.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 116316 ± 5% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_read_failed.need_dentry_mark.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 96158 ± 3% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_read_failed.need_inode_block_update.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 1238583 ± 1% latency_stats.hits.call_rwsem_down_read_failed.percpu_down_read.get_node_info.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 2911068 ± 7% latency_stats.hits.call_rwsem_down_read_failed.percpu_down_read.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 0.00 ± -1% +Inf% 6208007 ± 2% latency_stats.hits.call_rwsem_down_read_failed.percpu_down_read.get_node_info.[f2fs].write_data_page.[f2fs].do_write_data_page.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 0.00 ± -1% +Inf% 2257817 ± 10% latency_stats.hits.call_rwsem_down_read_failed.percpu_down_read.is_checkpointed_node.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 2727789 ± 1% latency_stats.hits.call_rwsem_down_read_failed.percpu_down_read.need_dentry_mark.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 2227301 ± 2% latency_stats.hits.call_rwsem_down_read_failed.percpu_down_read.need_inode_block_update.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 12787 ± 9% -83.0% 2177 ± 9% latency_stats.hits.call_rwsem_down_write_failed.__f2fs_submit_merged_bio.[f2fs].f2fs_submit_merged_bio_cond.[f2fs].f2fs_wait_on_page_writeback.[f2fs].f2fs_wait_on_page_writeback.[f2fs].wait_on_node_pages_writeback.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 140416 ± 3% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_write_failed.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 0.00 ± -1% +Inf% 2617435 ± 9% latency_stats.hits.call_rwsem_down_write_failed.percpu_down_write.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 0.00 ± -1% +Inf% 2581381 ± 1% latency_stats.hits.call_rwsem_down_write_failed.percpu_down_write.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 5283128 ± 3% latency_stats.hits.call_rwsem_down_write_failed.percpu_down_write.set_node_addr.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 193673 ± 4% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_write_failed.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 271526 ± 3% -100.0% 0.00 ± -1% latency_stats.hits.call_rwsem_down_write_failed.set_node_addr.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 0.00 ± -1% +Inf% 11445 ± 20% latency_stats.hits.percpu_down_write.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 0.00 ± -1% +Inf% 24410 ± 15% latency_stats.hits.percpu_down_write.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 26517 ± 9% latency_stats.hits.percpu_down_write.set_node_addr.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 54803 ± 8% -100.0% 0.00 ± -1% latency_stats.max.call_rwsem_down_read_failed.f2fs_new_inode.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 7982 ± 76% -100.0% 0.00 ± -1% latency_stats.max.call_rwsem_down_read_failed.f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync 0.00 ± -1% +Inf% 9196 ± 32% latency_stats.max.call_rwsem_down_read_failed.percpu_down_read.f2fs_new_inode.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 15634 ±151% latency_stats.max.call_rwsem_down_read_failed.percpu_down_read.f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync 5996 ± 54% -100.0% 0.00 ± -1% latency_stats.max.call_rwsem_down_write_failed.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 18794 ± 50% -99.8% 38.20 ± 36% latency_stats.max.call_rwsem_down_write_failed.write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 25320 ± 17% -99.9% 18.30 ± 42% latency_stats.max.call_rwsem_down_write_failed.write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 352.80 ± 66% +25704.3% 91037 ± 7% latency_stats.max.f2fs_sync_fs.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 20403 ±131% latency_stats.max.percpu_down_write.write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 11786 ± 39% latency_stats.max.percpu_down_write.write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 0.00 ± -1% +Inf% 18121 ±153% latency_stats.max.rcu_sync_enter.percpu_down_write.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 0.00 ± -1% +Inf% 23677 ± 90% latency_stats.max.rcu_sync_enter.percpu_down_write.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].sync_node_pages.[f2fs].write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open 0.00 ± -1% +Inf% 14660 ± 34% latency_stats.max.rcu_sync_enter.percpu_down_write.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].sync_node_pages.[f2fs].write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs] 0.00 ± -1% +Inf% 16700 ±162% latency_stats.max.rcu_sync_enter.percpu_down_write.try_to_free_nats.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 51205 ± 11% -80.7% 9868 ± 29% latency_stats.max.wait_on_page_bit.f2fs_wait_on_page_writeback.[f2fs].f2fs_wait_on_page_writeback.[f2fs].wait_on_node_pages_writeback.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 123642 ± 26% -100.0% 0.00 ± -1% latency_stats.sum.bt_get.blk_mq_get_tag.__blk_mq_alloc_request.blk_mq_map_request.blk_mq_make_request.generic_make_request.submit_bio.__submit_merged_bio.[f2fs].f2fs_submit_page_mbio.[f2fs].write_meta_page.[f2fs].f2fs_write_meta_page.[f2fs].sync_meta_pages.[f2fs] 19533 ± 10% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.build_free_nids.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 145779 ± 11% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.build_free_nids.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs] 23239 ± 49% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.f2fs_convert_inline_inode.[f2fs].f2fs_preallocate_blocks.[f2fs].f2fs_file_write_iter.[f2fs].__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 15290 ± 17% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 6123697 ± 6% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.f2fs_new_inode.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 34789 ± 22% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync 472390 ± 4% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.get_node_info.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 1526265 ± 5% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 66045 ± 6% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.get_node_info.[f2fs].write_data_page.[f2fs].do_write_data_page.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_fdatawrite.sync_dirty_inodes.[f2fs].write_checkpoint.[f2fs] 2547237 ± 2% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.get_node_info.[f2fs].write_data_page.[f2fs].do_write_data_page.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs] 1181887 ± 2% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.is_checkpointed_node.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 879407 ± 2% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.need_dentry_mark.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 658290 ± 3% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.need_inode_block_update.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 56722 ± 8% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.build_free_nids.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 201027 ± 7% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.build_free_nids.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 0.00 ± -1% +Inf% 7958 ± 50% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 73190 ± 11% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.f2fs_new_inode.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 47053 ± 52% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync 0.00 ± -1% +Inf% 11815766 ± 5% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.get_node_info.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 21331651 ± 17% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 0.00 ± -1% +Inf% 48966334 ± 11% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.get_node_info.[f2fs].write_data_page.[f2fs].do_write_data_page.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 0.00 ± -1% +Inf% 17894265 ± 10% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.is_checkpointed_node.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 18580100 ± 4% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.need_dentry_mark.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 27464359 ± 6% latency_stats.sum.call_rwsem_down_read_failed.percpu_down_read.need_inode_block_update.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 22780 ± 8% -84.5% 3539 ± 10% latency_stats.sum.call_rwsem_down_write_failed.__f2fs_submit_merged_bio.[f2fs].f2fs_submit_merged_bio_cond.[f2fs].f2fs_wait_on_page_writeback.[f2fs].f2fs_wait_on_page_writeback.[f2fs].wait_on_node_pages_writeback.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 965007 ± 5% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_write_failed.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 0.00 ± -1% +Inf% 7963263 ± 15% latency_stats.sum.call_rwsem_down_write_failed.percpu_down_write.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 0.00 ± -1% +Inf% 7766380 ± 4% latency_stats.sum.call_rwsem_down_write_failed.percpu_down_write.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 22993263 ± 10% latency_stats.sum.call_rwsem_down_write_failed.percpu_down_write.set_node_addr.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 0.00 ± -1% +Inf% 24094 ± 11% latency_stats.sum.call_rwsem_down_write_failed.percpu_down_write.try_to_free_nats.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 96995 ± 6% latency_stats.sum.call_rwsem_down_write_failed.percpu_down_write.try_to_free_nats.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 1230935 ± 4% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_write_failed.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 1133345 ± 5% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_write_failed.set_node_addr.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 59569 ± 41% -99.4% 369.80 ± 18% latency_stats.sum.call_rwsem_down_write_failed.write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 231014 ± 22% -100.0% 103.90 ± 39% latency_stats.sum.call_rwsem_down_write_failed.write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 4537935 ± 27% +306.3% 18436209 ± 6% latency_stats.sum.f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 1473434 ± 17% +530.5% 9289385 ± 11% latency_stats.sum.f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range 1018 ± 52% +80360.5% 819812 ± 11% latency_stats.sum.f2fs_sync_fs.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 517363 ± 5% latency_stats.sum.percpu_down_write.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 0.00 ± -1% +Inf% 890753 ± 3% latency_stats.sum.percpu_down_write.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].fsync_node_pages.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 258657 ± 10% latency_stats.sum.percpu_down_write.set_node_addr.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open 0.00 ± -1% +Inf% 70546 ± 50% latency_stats.sum.percpu_down_write.write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 65607 ± 25% latency_stats.sum.percpu_down_write.write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 0.00 ± -1% +Inf% 50572 ± 81% latency_stats.sum.rcu_sync_enter.percpu_down_write.get_node_info.[f2fs].new_node_page.[f2fs].new_inode_page.[f2fs].init_inode_metadata.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open 0.00 ± -1% +Inf% 123301 ± 26% latency_stats.sum.rcu_sync_enter.percpu_down_write.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].sync_node_pages.[f2fs].write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open 0.00 ± -1% +Inf% 110076 ± 10% latency_stats.sum.rcu_sync_enter.percpu_down_write.set_node_addr.[f2fs].f2fs_write_node_page.[f2fs].sync_node_pages.[f2fs].write_checkpoint.[f2fs].f2fs_sync_fs.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs] 0.00 ± -1% +Inf% 52574 ± 79% latency_stats.sum.rcu_sync_enter.percpu_down_write.try_to_free_nats.[f2fs].f2fs_balance_fs_bg.[f2fs].f2fs_balance_fs.[f2fs].f2fs_write_data_page.[f2fs].f2fs_write_cache_pages.[f2fs].f2fs_write_data_pages.[f2fs].do_writepages.__filemap_fdatawrite_range.filemap_write_and_wait_range.f2fs_do_sync_file.[f2fs] 689963 ± 22% -98.9% 7538 ±238% latency_stats.sum.wait_on_page_bit.f2fs_wait_on_page_writeback.[f2fs].f2fs_wait_on_page_writeback.[f2fs].f2fs_add_regular_entry.[f2fs].__f2fs_add_link.[f2fs].f2fs_create.[f2fs].path_openat.do_filp_open.do_sys_open.SyS_open.entry_SYSCALL_64_fastpath 9358 ± 44% -95.3% 441.00 ± 39% latency_stats.sum.wait_on_page_bit.f2fs_wait_on_page_writeback.[f2fs].f2fs_wait_on_page_writeback.[f2fs].update_inode.[f2fs].update_inode_page.[f2fs].f2fs_write_inode.[f2fs].f2fs_do_sync_file.[f2fs].f2fs_sync_file.[f2fs].vfs_fsync_range.do_fsync.SyS_fsync.entry_SYSCALL_64_fastpath fsmark.time.system_time 1800 ++-------------------------------------------------------------------+ | O | 1600 OOO OOOOOO OOOOOO OOOOOO OOOO O OOOOOO OOOOOO OOOOO OOOOOO O | 1400 ++ | | | 1200 ***.** * *.*** **.******.* * | 1000 ++ ****.******.******.*** * * *** *.******.******.*** | | 800 ++ | 600 ++ | | | 400 ++ | 200 ++ | | | 0 ++--------------------------------------------O----------------------+ fsmark.time.elapsed_time 600 ++--------------------------------------------------------------------+ | | 500 OOO OOOOOO OOOOO OOOOO OOOOOO OOOOO OOOO O O O OOOO OO O O | | O O O O O O | | | 400 ++ * * * | ***.******.*****.*****.***** + ****. ****.* ****.** **.*****. *** *. * 300 ++ * * * * **| | | 200 ++ | | | | | 100 ++ | | | 0 ++--------------------------------------------O-----------------------+ fsmark.time.elapsed_time.max 600 ++--------------------------------------------------------------------+ | | 500 OOO OOOOOO OOOOO OOOOO OOOOOO OOOOO OOOO O O O OOOO OO O O | | O O O O O O | | | 400 ++ * * * | ***.******.*****.*****.***** + ****. ****.* ****.** **.*****. *** *. * 300 ++ * * * * **| | | 200 ++ | | | | | 100 ++ | | | 0 ++--------------------------------------------O-----------------------+ fsmark.time.voluntary_context_switches 6e+07 ++------------------------------------------------------------------+ | | 5e+07 O+ OO O O O OO O OO O OO O O OO O OO | |OOO OOOO OO OOO OOO OO O O O O OO O OOOOOO | | | 4e+07 ++ | | | 3e+07 ++ | | *****.*******.******.** ***.*******. | 2e+07 ****.* *****.*******.*** ******.**** | | | | 1e+07 ++ | | | 0 ++-------------------------------------------O----------------------+ fsmark.files_per_sec 35000 ++------------------------------------------------------------------+ | | 30000 ++ * * ** .** .******.**** ****.* * **.*******.******.** *** **** .******. ****** | 25000 ++ * * | | | 20000 O+OO O OO O O O O O OO O OOOOO | |O OOOOO OO OO OOOOOO OOOOO O OO O O OO OO OO | 15000 ++ | | | 10000 ++ | | | 5000 ++ | | | 0 ++-------------------------------------------O----------------------+ [*] bisect-good sample [O] bisect-bad sample Thanks, Xiaolong

5 years, 5 months

3
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0 / 0

[lkp] 8296d37010: vm-scalability.throughput -42.0% regression

by kernel test robot

FYI, we noticed a -42.0% regression of vm-scalability.throughput due to commit: commit 8296d3701014cd804bf981b5e2bf9a58b5c0e341 ("Speeds up clearing huge pages using work queue") git://bee.sh.intel.com/git/yhuang/linux.git dbg_clear_huge_page in testcase: vm-scalability on test machine: 144 threads Brickland Haswell-EX with 512G memory with following parameters: cpufreq_governor: performance runtime: 300s size: 8T test: anon-w-seq In addition to that, the commit also has significant impact on the following tests: +------------------+----------------------------------------------------------------------------------+ | testcase: change | vm-scalability: vm-scalability.throughput 27.7% improvement | | test machine | 72 threads Brickland Haswell-EP with 128G memory | | test parameters | cpufreq_governor=performance | | | nr_task=1 | | | runtime=300s | | | size=8T | | | test=anon-w-seq | +------------------+----------------------------------------------------------------------------------+ | testcase: change | vm-scalability: vm-scalability.throughput 33.5% improvement | | test machine | 88 threads Broadwell-EP with 128G memory | | test parameters | cpufreq_governor=performance | | | runtime=300s | | | size=8T | | | test=anon-w-seq | +------------------+----------------------------------------------------------------------------------+ | testcase: change | vm-scalability: vm-scalability.throughput 45.6% improvement | | test machine | 72 threads Brickland Haswell-EP with 128G memory | | test parameters | cpufreq_governor=performance | | | runtime=300s | | | size=8T | | | test=anon-w-seq | +------------------+----------------------------------------------------------------------------------+ | testcase: change | vm-scalability: | | test machine | 4 threads qemu-system-x86_64 -enable-kvm -cpu qemu64,+ssse3 with 4G memory | | test parameters | runtime=300s | | | size=2T | | | test=shm-pread-seq | +------------------+----------------------------------------------------------------------------------+ | testcase: change | vm-scalability: | | test machine | 72 threads Brickland Haswell-EP with 128G memory | | test parameters | cpufreq_governor=performance | | | runtime=300s | | | size=8T | | | test=anon-w-seq | | | thp_defrag=never | | | thp_enabled=never | +------------------+----------------------------------------------------------------------------------+ 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. Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/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: gcc-4.9/performance/x86_64-rhel/debian-x86_64-2015-02-07.cgz/300s/8T/lkp-hsx04/anon-w-seq/vm-scalability commit: v4.7-rc7 8296d37010 ("Speeds up clearing huge pages using work queue") v4.7-rc7 8296d3701014cd804bf981b5e2 ---------------- -------------------------- fail:runs %reproduction fail:runs | | | %stddev %change %stddev \ | \ 79883256 ± 0% -42.0% 46349306 ± 0% vm-scalability.throughput 516.98 ± 0% +65.4% 855.09 ± 0% vm-scalability.time.elapsed_time 516.98 ± 0% +65.4% 855.09 ± 0% vm-scalability.time.elapsed_time.max 427347 ± 1% +4365.4% 19082862 ± 0% vm-scalability.time.involuntary_context_switches 27202100 ± 1% -3.8% 26170440 ± 1% vm-scalability.time.minor_page_faults 13276 ± 0% -69.6% 4036 ± 0% vm-scalability.time.percent_of_cpu_this_job_got 34729 ± 0% -27.8% 25090 ± 0% vm-scalability.time.system_time 33909 ± 0% -72.2% 9431 ± 0% vm-scalability.time.user_time 41305 ± 0% +69327.1% 28676869 ± 0% vm-scalability.time.voluntary_context_switches 28541 ± 0% +88.3% 53732 ± 0% meminfo.KernelStack 15170 ± 3% +42.4% 21607 ± 4% softirqs.NET_RX 5954845 ± 1% +198.8% 17795401 ± 0% softirqs.RCU 547545 ± 10% +2448.4% 13953494 ± 0% softirqs.SCHED 134.75 ± 1% -39.0% 82.20 ± 0% vmstat.procs.r 7130 ± 3% +5610.4% 407164 ± 0% vmstat.system.cs 147778 ± 0% +3.2% 152445 ± 0% vmstat.system.in 11247 ± 1% +56.8% 17639 ± 0% numa-meminfo.node0.KernelStack 5822 ± 6% +106.8% 12037 ± 1% numa-meminfo.node1.KernelStack 5796 ± 4% +111.4% 12253 ± 1% numa-meminfo.node2.KernelStack 5691 ± 3% +108.3% 11852 ± 0% numa-meminfo.node3.KernelStack 1137 ± 18% +703.1% 9135 ±167% numa-meminfo.node3.Shmem 702.75 ± 1% +56.8% 1101 ± 0% numa-vmstat.node0.nr_kernel_stack 363.50 ± 6% +106.8% 751.80 ± 1% numa-vmstat.node1.nr_kernel_stack 361.00 ± 4% +112.0% 765.40 ± 1% numa-vmstat.node2.nr_kernel_stack 355.00 ± 3% +108.6% 740.40 ± 0% numa-vmstat.node3.nr_kernel_stack 283.75 ± 18% +704.8% 2283 ±167% numa-vmstat.node3.nr_shmem 559380 ± 16% +6.6e+05% 3.712e+09 ± 1% cpuidle.C1-HSW.time 46260 ± 23% +89365.4% 41386703 ± 1% cpuidle.C1-HSW.usage 14628635 ± 16% +34618.7% 5.079e+09 ± 0% cpuidle.C1E-HSW.time 28388 ± 6% +2e+05% 55926082 ± 0% cpuidle.C1E-HSW.usage 21808226 ± 3% +76644.1% 1.674e+10 ± 0% cpuidle.C3-HSW.time 61344 ± 3% +1e+05% 63558599 ± 0% cpuidle.C3-HSW.usage 5.555e+09 ± 3% +491.3% 3.285e+10 ± 0% cpuidle.C6-HSW.time 5848295 ± 3% +758.9% 50232586 ± 0% cpuidle.C6-HSW.usage 6742029 ± 19% +1671.8% 1.195e+08 ± 0% cpuidle.POLL.time 1012 ± 18% +41616.8% 422173 ± 0% cpuidle.POLL.usage 1783 ± 0% +88.3% 3358 ± 0% proc-vmstat.nr_kernel_stack 41801 ± 0% +13.4% 47397 ± 2% proc-vmstat.numa_foreign 95889 ± 1% -80.8% 18393 ± 0% proc-vmstat.numa_hint_faults 61294 ± 1% -92.3% 4715 ± 1% proc-vmstat.numa_hint_faults_local 13629995 ± 0% -32.3% 9230486 ± 0% proc-vmstat.numa_huge_pte_updates 41801 ± 0% +13.4% 47397 ± 2% proc-vmstat.numa_miss 27943 ± 1% -51.4% 13583 ± 0% proc-vmstat.numa_pages_migrated 6.983e+09 ± 0% -32.3% 4.731e+09 ± 0% proc-vmstat.numa_pte_updates 274.00 ± 4% -100.0% 0.00 ± 0% proc-vmstat.pgmigrate_fail 27943 ± 1% -51.4% 13583 ± 0% proc-vmstat.pgmigrate_success 92.53 ± 0% -43.0% 52.74 ± 0% turbostat.%Busy 2675 ± 0% -43.0% 1525 ± 0% turbostat.Avg_MHz 3.39 ± 1% +1107.2% 40.89 ± 0% turbostat.CPU%c1 0.01 ± 0% +33960.0% 3.41 ± 0% turbostat.CPU%c3 4.07 ± 4% -27.2% 2.96 ± 1% turbostat.CPU%c6 65.00 ± 2% -12.6% 56.80 ± 0% turbostat.CoreTmp 1.72 ± 6% -82.0% 0.31 ± 4% turbostat.Pkg%pc2 67.50 ± 3% -12.3% 59.20 ± 0% turbostat.PkgTmp 603.44 ± 0% -12.6% 527.24 ± 0% turbostat.PkgWatt 1029 ± 0% -42.8% 589.21 ± 0% turbostat.RAMWatt 800.50 ± 25% +105.0% 1641 ± 24% slabinfo.blkdev_requests.active_objs 800.50 ± 25% +105.0% 1641 ± 24% slabinfo.blkdev_requests.num_objs 36464 ± 3% -48.9% 18616 ± 0% slabinfo.kmalloc-256.active_objs 583.00 ± 3% -39.8% 350.80 ± 1% slabinfo.kmalloc-256.active_slabs 37354 ± 3% -39.8% 22483 ± 1% slabinfo.kmalloc-256.num_objs 583.00 ± 3% -39.8% 350.80 ± 1% slabinfo.kmalloc-256.num_slabs 50562 ± 1% +12.0% 56643 ± 1% slabinfo.kmalloc-32.active_objs 50573 ± 1% +12.0% 56646 ± 1% slabinfo.kmalloc-32.num_objs 19624 ± 1% +13.9% 22350 ± 5% slabinfo.kmalloc-512.active_objs 19793 ± 1% +13.3% 22417 ± 5% slabinfo.kmalloc-512.num_objs 197.75 ± 40% +139.4% 473.40 ± 6% slabinfo.nfs_read_data.active_objs 197.75 ± 40% +139.4% 473.40 ± 6% slabinfo.nfs_read_data.num_objs 20308 ± 0% +18.3% 24024 ± 1% slabinfo.proc_inode_cache.active_objs 20315 ± 0% +18.3% 24024 ± 1% slabinfo.proc_inode_cache.num_objs 7781 ± 1% +14.0% 8867 ± 1% slabinfo.sighand_cache.active_objs 7901 ± 1% +13.5% 8965 ± 1% slabinfo.sighand_cache.num_objs 11430 ± 1% +12.0% 12801 ± 0% slabinfo.signal_cache.active_objs 11505 ± 1% +11.6% 12836 ± 0% slabinfo.signal_cache.num_objs 2735 ± 0% +52.2% 4165 ± 0% slabinfo.task_struct.active_objs 925.75 ± 0% +51.3% 1400 ± 0% slabinfo.task_struct.active_slabs 2777 ± 0% +51.3% 4201 ± 0% slabinfo.task_struct.num_objs 925.75 ± 0% +51.3% 1400 ± 0% slabinfo.task_struct.num_slabs 0.00 ± -1% +Inf% 21653 ± 46% latency_stats.avg.cgroup_kn_lock_live.__cgroup_procs_write.cgroup_procs_write.cgroup_file_write.kernfs_fop_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 22567 ± 45% latency_stats.avg.proc_cgroup_show.proc_single_show.seq_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 3852719 ± 0% latency_stats.hits.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 4545106 ± 0% latency_stats.hits.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 16172385 ± 0% latency_stats.hits.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 1321590 ± 3% -70.2% 394183 ± 1% latency_stats.hits.pipe_wait.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 662623 ± 69% latency_stats.max.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 21951 ± 75% -100.0% 0.00 ± -1% latency_stats.max.call_rwsem_down_read_failed.page_lock_anon_vma_read.rmap_walk_anon.rmap_walk.try_to_unmap.migrate_pages.migrate_misplaced_page.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 6386 ±110% -98.1% 120.20 ± 97% latency_stats.max.call_rwsem_down_write_failed.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.SyS_mmap_pgoff.SyS_mmap.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 21653 ± 46% latency_stats.max.cgroup_kn_lock_live.__cgroup_procs_write.cgroup_procs_write.cgroup_file_write.kernfs_fop_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 662781 ± 69% latency_stats.max.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 7092 ± 30% latency_stats.max.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 22567 ± 45% latency_stats.max.proc_cgroup_show.proc_single_show.seq_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath 27271 ± 37% -100.0% 0.00 ± -1% latency_stats.max.wait_on_page_bit.__migration_entry_wait.migration_entry_wait.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 1.912e+10 ± 0% latency_stats.sum.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 97956 ± 89% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.page_lock_anon_vma_read.rmap_walk_anon.rmap_walk.try_to_unmap.migrate_pages.migrate_misplaced_page.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 25625 ± 25% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.rmap_walk_anon.rmap_walk.remove_migration_ptes.migrate_pages.migrate_misplaced_page.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 23289 ±132% -97.2% 648.80 ± 48% latency_stats.sum.call_rwsem_down_write_failed.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.SyS_mmap_pgoff.SyS_mmap.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 21653 ± 46% latency_stats.sum.cgroup_kn_lock_live.__cgroup_procs_write.cgroup_procs_write.cgroup_file_write.kernfs_fop_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 2.558e+10 ± 0% latency_stats.sum.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 4.672e+09 ± 0% latency_stats.sum.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 22567 ± 45% latency_stats.sum.proc_cgroup_show.proc_single_show.seq_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath 2506022 ± 12% -100.0% 0.00 ± -1% latency_stats.sum.wait_on_page_bit.__migration_entry_wait.migration_entry_wait.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 1.143e+12 ± 0% +10.4% 1.262e+12 ± 0% perf-stat.L1-dcache-load-misses 1.354e+13 ± 0% +101.2% 2.726e+13 ± 0% perf-stat.L1-dcache-loads 5.788e+12 ± 0% +13.9% 6.59e+12 ± 1% perf-stat.L1-dcache-stores 1.518e+10 ± 2% +398.1% 7.562e+10 ± 1% perf-stat.L1-icache-load-misses 8.415e+09 ± 0% +192.9% 2.465e+10 ± 0% perf-stat.LLC-load-misses 2.557e+10 ± 0% +473.4% 1.466e+11 ± 0% perf-stat.LLC-loads 1.02e+11 ± 0% -40.0% 6.116e+10 ± 0% perf-stat.LLC-store-misses 3.893e+11 ± 0% -59.1% 1.592e+11 ± 0% perf-stat.LLC-stores 2.226e+13 ± 0% +57.8% 3.512e+13 ± 0% perf-stat.branch-instructions 1.417e+09 ± 6% +1809.7% 2.706e+10 ± 0% perf-stat.branch-load-misses 2.225e+13 ± 0% +57.2% 3.497e+13 ± 0% perf-stat.branch-loads 1.458e+09 ± 3% +1750.7% 2.699e+10 ± 0% perf-stat.branch-misses 6.66e+12 ± 0% -4.2% 6.377e+12 ± 1% perf-stat.bus-cycles 1.111e+11 ± 0% -21.4% 8.725e+10 ± 0% perf-stat.cache-misses 4.293e+11 ± 0% -14.2% 3.681e+11 ± 0% perf-stat.cache-references 3682641 ± 3% +9370.7% 3.488e+08 ± 0% perf-stat.context-switches 1.923e+14 ± 0% -4.7% 1.833e+14 ± 1% perf-stat.cpu-cycles 124403 ± 0% +22298.6% 27864645 ± 0% perf-stat.cpu-migrations 2.248e+09 ± 25% +320.7% 9.457e+09 ± 14% perf-stat.dTLB-load-misses 1.352e+13 ± 0% +102.1% 2.732e+13 ± 0% perf-stat.dTLB-loads 3.587e+08 ± 10% +169.6% 9.67e+08 ± 12% perf-stat.dTLB-store-misses 5.785e+12 ± 0% +14.1% 6.6e+12 ± 0% perf-stat.dTLB-stores 2.533e+08 ± 1% +70.1% 4.309e+08 ± 1% perf-stat.iTLB-load-misses 75350482 ± 1% +3093.7% 2.406e+09 ± 1% perf-stat.iTLB-loads 7.124e+13 ± 0% +63.3% 1.164e+14 ± 0% perf-stat.instructions 1.691e+09 ± 0% +919.2% 1.723e+10 ± 0% perf-stat.node-load-misses 6.683e+09 ± 0% +9.4% 7.308e+09 ± 1% perf-stat.node-loads 2.729e+08 ± 0% +9304.2% 2.566e+10 ± 0% perf-stat.node-store-misses 1.017e+11 ± 0% -64.6% 3.603e+10 ± 1% perf-stat.node-stores 1.66e+14 ± 0% -4.7% 1.582e+14 ± 1% perf-stat.ref-cycles 1.20 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 0.00 ± -1% +Inf% 22.47 ± 5% perf-profile.cycles-pp.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 41.58 ± 6% -36.6% 26.36 ± 25% perf-profile.cycles-pp.__do_page_fault.do_page_fault.page_fault.do_unit 0.00 ± -1% +Inf% 10.67 ± 5% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 10.73 ± 4% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page 0.00 ± -1% +Inf% 6.35 ± 4% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 16.46 ± 3% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn.process_one_work.worker_thread 0.00 ± -1% +Inf% 1.04 ± 1% perf-profile.cycles-pp.__schedule.schedule.worker_thread.kthread.ret_from_fork 1.21 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 11.72 ± 4% perf-profile.cycles-pp.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 0.87 ± 63% +2639.6% 23.77 ± 2% perf-profile.cycles-pp.call_cpuidle.cpu_startup_entry.start_secondary 2.04 ± 15% +1432.8% 31.31 ± 4% perf-profile.cycles-pp.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 50.52 ± 4% -100.0% 0.00 ± -1% perf-profile.cycles-pp.clear_page_c_e.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 12.73 ± 2% perf-profile.cycles-pp.clear_page_c_e.process_one_work.worker_thread.kthread.ret_from_fork 0.87 ± 63% +2706.2% 24.48 ± 2% perf-profile.cycles-pp.cpu_startup_entry.start_secondary 0.87 ± 63% +2638.9% 23.76 ± 2% perf-profile.cycles-pp.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 0.85 ± 63% +2675.2% 23.52 ± 2% perf-profile.cycles-pp.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 0.00 ± -1% +Inf% 7.40 ± 4% perf-profile.cycles-pp.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 55.34 ± 4% -43.0% 31.56 ± 4% perf-profile.cycles-pp.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 41.59 ± 6% -36.6% 26.36 ± 25% perf-profile.cycles-pp.do_page_fault.page_fault.do_unit 83.81 ± 6% -55.9% 36.92 ± 25% perf-profile.cycles-pp.do_unit 1.18 ± 16% -100.0% 0.00 ± -1% perf-profile.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault 41.45 ± 6% -36.5% 26.33 ± 25% perf-profile.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault.do_unit 0.83 ± 63% +2693.5% 23.33 ± 2% perf-profile.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry 0.00 ± -1% +Inf% 32.67 ± 3% perf-profile.cycles-pp.kthread.ret_from_fork 0.00 ± -1% +Inf% 10.68 ± 5% perf-profile.cycles-pp.mutex_lock.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 0.00 ± -1% +Inf% 10.73 ± 4% perf-profile.cycles-pp.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 6.35 ± 4% perf-profile.cycles-pp.mutex_lock.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 0.00 ± -1% +Inf% 16.49 ± 3% perf-profile.cycles-pp.mutex_lock.pwq_unbound_release_workfn.process_one_work.worker_thread.kthread 0.00 ± -1% +Inf% 10.64 ± 5% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key.clear_huge_page 0.00 ± -1% +Inf% 10.70 ± 4% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key 0.00 ± -1% +Inf% 6.31 ± 4% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.destroy_workqueue.clear_huge_page 0.00 ± -1% +Inf% 16.42 ± 3% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn.process_one_work 0.00 ± -1% +Inf% 10.36 ± 5% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key 0.00 ± -1% +Inf% 10.27 ± 4% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs 0.00 ± -1% +Inf% 6.02 ± 5% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.destroy_workqueue 0.00 ± -1% +Inf% 16.08 ± 3% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn 41.59 ± 6% -36.6% 26.36 ± 25% perf-profile.cycles-pp.page_fault.do_unit 0.00 ± -1% +Inf% 31.28 ± 3% perf-profile.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork 0.00 ± -1% +Inf% 16.71 ± 3% perf-profile.cycles-pp.pwq_unbound_release_workfn.process_one_work.worker_thread.kthread.ret_from_fork 0.00 ± -1% +Inf% 32.67 ± 3% perf-profile.cycles-pp.ret_from_fork 0.00 ± -1% +Inf% 1.07 ± 2% perf-profile.cycles-pp.schedule.worker_thread.kthread.ret_from_fork 0.88 ± 63% +2699.8% 24.50 ± 2% perf-profile.cycles-pp.start_secondary 0.00 ± -1% +Inf% 32.50 ± 3% perf-profile.cycles-pp.worker_thread.kthread.ret_from_fork 51865 ± 31% +1461.5% 809868 ± 4% sched_debug.cfs_rq:/.MIN_vruntime.avg 620221 ± 31% +279.3% 2352308 ± 2% sched_debug.cfs_rq:/.MIN_vruntime.stddev 217836 ± 0% -15.8% 183318 ± 0% sched_debug.cfs_rq:/.exec_clock.min 1428 ± 15% +1692.5% 25603 ± 0% sched_debug.cfs_rq:/.exec_clock.stddev 8371 ± 6% +2802.6% 242990 ± 4% sched_debug.cfs_rq:/.load.avg 255027 ± 31% +530.6% 1608188 ± 17% sched_debug.cfs_rq:/.load.max 2774 ± 14% -100.0% 0.00 ± -1% sched_debug.cfs_rq:/.load.min 22973 ± 28% +1784.8% 433000 ± 3% sched_debug.cfs_rq:/.load.stddev 15.98 ± 7% +1458.1% 249.03 ± 2% sched_debug.cfs_rq:/.load_avg.avg 231.17 ± 4% +254.2% 818.76 ± 9% sched_debug.cfs_rq:/.load_avg.max 2.64 ± 14% +1206.1% 34.47 ± 7% sched_debug.cfs_rq:/.load_avg.min 34.87 ± 5% +320.6% 146.67 ± 4% sched_debug.cfs_rq:/.load_avg.stddev 51865 ± 31% +1461.5% 809868 ± 4% sched_debug.cfs_rq:/.max_vruntime.avg 620221 ± 31% +279.3% 2352308 ± 2% sched_debug.cfs_rq:/.max_vruntime.stddev 31688756 ± 0% -75.3% 7837478 ± 0% sched_debug.cfs_rq:/.min_vruntime.avg 32039857 ± 0% -73.4% 8530591 ± 0% sched_debug.cfs_rq:/.min_vruntime.max 31236174 ± 0% -77.1% 7142398 ± 1% sched_debug.cfs_rq:/.min_vruntime.min 172847 ± 16% +193.9% 508060 ± 1% sched_debug.cfs_rq:/.min_vruntime.stddev 0.76 ± 9% -21.0% 0.60 ± 2% sched_debug.cfs_rq:/.nr_running.avg 1.19 ± 4% +79.7% 2.15 ± 8% sched_debug.cfs_rq:/.nr_running.max 0.39 ± 14% -100.0% 0.00 ± -1% sched_debug.cfs_rq:/.nr_running.min 0.18 ± 18% +239.8% 0.63 ± 1% sched_debug.cfs_rq:/.nr_running.stddev 2.27 ± 23% +247.9% 7.90 ± 3% sched_debug.cfs_rq:/.nr_spread_over.avg 5.72 ± 5% +600.3% 40.07 ± 5% sched_debug.cfs_rq:/.runnable_load_avg.avg 82.11 ± 49% +306.4% 333.69 ± 8% sched_debug.cfs_rq:/.runnable_load_avg.max 2.22 ± 15% -100.0% 0.00 ± -1% sched_debug.cfs_rq:/.runnable_load_avg.min 7.90 ± 39% +797.4% 70.91 ± 4% sched_debug.cfs_rq:/.runnable_load_avg.stddev -94182 ±-133% +218.5% -299955 ± -3% sched_debug.cfs_rq:/.spread0.avg -545371 ±-32% +82.6% -995615 ± -8% sched_debug.cfs_rq:/.spread0.min 173893 ± 16% +192.5% 508704 ± 1% sched_debug.cfs_rq:/.spread0.stddev 795.73 ± 6% -35.3% 514.90 ± 2% sched_debug.cfs_rq:/.util_avg.avg 443.89 ± 20% -63.2% 163.16 ± 11% sched_debug.cfs_rq:/.util_avg.min 986272 ± 0% -49.0% 502866 ± 1% sched_debug.cpu.avg_idle.avg 1024476 ± 1% +12.4% 1151269 ± 1% sched_debug.cpu.avg_idle.max 760003 ± 4% -95.7% 32915 ± 12% sched_debug.cpu.avg_idle.min 37266 ± 11% +642.8% 276814 ± 0% sched_debug.cpu.avg_idle.stddev 290694 ± 0% +62.4% 471958 ± 0% sched_debug.cpu.clock.avg 290826 ± 0% +62.3% 472019 ± 0% sched_debug.cpu.clock.max 290537 ± 0% +62.4% 471895 ± 0% sched_debug.cpu.clock.min 81.82 ± 24% -56.4% 35.69 ± 2% sched_debug.cpu.clock.stddev 290694 ± 0% +62.4% 471958 ± 0% sched_debug.cpu.clock_task.avg 290826 ± 0% +62.3% 472019 ± 0% sched_debug.cpu.clock_task.max 290537 ± 0% +62.4% 471895 ± 0% sched_debug.cpu.clock_task.min 81.82 ± 24% -56.4% 35.69 ± 2% sched_debug.cpu.clock_task.stddev 5.79 ± 5% +433.8% 30.90 ± 8% sched_debug.cpu.cpu_load[0].avg 81.75 ± 48% +278.6% 309.48 ± 9% sched_debug.cpu.cpu_load[0].max 2.22 ± 15% -100.0% 0.00 ± -1% sched_debug.cpu.cpu_load[0].min 7.94 ± 38% +668.4% 61.02 ± 6% sched_debug.cpu.cpu_load[0].stddev 9.53 ± 9% +741.3% 80.20 ± 4% sched_debug.cpu.cpu_load[1].avg 139.67 ± 15% +140.0% 335.23 ± 3% sched_debug.cpu.cpu_load[1].max 2.42 ± 22% -92.8% 0.17 ± 79% sched_debug.cpu.cpu_load[1].min 20.64 ± 15% +263.0% 74.94 ± 3% sched_debug.cpu.cpu_load[1].stddev 7.96 ± 6% +839.6% 74.83 ± 3% sched_debug.cpu.cpu_load[2].avg 104.56 ± 14% +178.3% 290.95 ± 3% sched_debug.cpu.cpu_load[2].max 2.42 ± 22% -70.2% 0.72 ± 26% sched_debug.cpu.cpu_load[2].min 14.10 ± 14% +324.1% 59.81 ± 4% sched_debug.cpu.cpu_load[2].stddev 7.05 ± 4% +909.5% 71.13 ± 3% sched_debug.cpu.cpu_load[3].avg 85.06 ± 11% +197.0% 252.63 ± 4% sched_debug.cpu.cpu_load[3].max 10.21 ± 14% +378.8% 48.89 ± 4% sched_debug.cpu.cpu_load[3].stddev 6.47 ± 4% +954.6% 68.18 ± 3% sched_debug.cpu.cpu_load[4].avg 67.14 ± 18% +217.5% 213.15 ± 4% sched_debug.cpu.cpu_load[4].max 2.42 ± 22% +99.2% 4.81 ± 18% sched_debug.cpu.cpu_load[4].min 7.64 ± 18% +421.8% 39.87 ± 4% sched_debug.cpu.cpu_load[4].stddev 16273 ± 8% -44.7% 9000 ± 5% sched_debug.cpu.curr->pid.avg 19035 ± 0% +39.9% 26637 ± 0% sched_debug.cpu.curr->pid.max 6025 ± 52% -100.0% 0.00 ± -1% sched_debug.cpu.curr->pid.min 3061 ± 31% +283.2% 11731 ± 1% sched_debug.cpu.curr->pid.stddev 7770 ± 9% +2964.7% 238130 ± 4% sched_debug.cpu.load.avg 171305 ± 59% +749.2% 1454745 ± 9% sched_debug.cpu.load.max 2774 ± 14% -100.0% 0.00 ± -1% sched_debug.cpu.load.min 16452 ± 50% +2477.0% 423970 ± 1% sched_debug.cpu.load.stddev 512284 ± 1% +42.2% 728214 ± 5% sched_debug.cpu.max_idle_balance_cost.max 1026 ± 62% +3364.7% 35570 ± 5% sched_debug.cpu.max_idle_balance_cost.stddev 0.00 ± 19% -34.1% 0.00 ± 2% sched_debug.cpu.next_balance.stddev 235853 ± 0% +40.8% 332030 ± 0% sched_debug.cpu.nr_load_updates.avg 242944 ± 0% +55.1% 376822 ± 0% sched_debug.cpu.nr_load_updates.max 230088 ± 0% +25.5% 288846 ± 0% sched_debug.cpu.nr_load_updates.min 3297 ± 1% +1118.8% 40194 ± 0% sched_debug.cpu.nr_load_updates.stddev 0.79 ± 12% -23.6% 0.60 ± 3% sched_debug.cpu.nr_running.avg 0.39 ± 14% -100.0% 0.00 ± -1% sched_debug.cpu.nr_running.min 0.29 ± 28% +119.2% 0.64 ± 3% sched_debug.cpu.nr_running.stddev 12486 ± 2% +9429.1% 1189888 ± 0% sched_debug.cpu.nr_switches.avg 139358 ± 11% +1029.4% 1573851 ± 0% sched_debug.cpu.nr_switches.max 1652 ± 7% +49792.2% 824412 ± 0% sched_debug.cpu.nr_switches.min 22570 ± 6% +1314.2% 319200 ± 0% sched_debug.cpu.nr_switches.stddev 0.00 ± 42% +47866.1% 1.57 ± 4% sched_debug.cpu.nr_uninterruptible.avg 12.42 ± 22% +68644.7% 8535 ± 0% sched_debug.cpu.nr_uninterruptible.max -15.08 ±-27% +59252.4% -8952 ± -2% sched_debug.cpu.nr_uninterruptible.min 4.38 ± 11% +1.8e+05% 7864 ± 0% sched_debug.cpu.nr_uninterruptible.stddev 12908 ± 2% +9123.8% 1190660 ± 0% sched_debug.cpu.sched_count.avg 155343 ± 11% +930.8% 1601227 ± 1% sched_debug.cpu.sched_count.max 1482 ± 7% +55508.2% 824530 ± 0% sched_debug.cpu.sched_count.min 24403 ± 5% +1211.1% 319962 ± 0% sched_debug.cpu.sched_count.stddev 732.59 ± 2% +70220.5% 515160 ± 0% sched_debug.cpu.sched_goidle.avg 9711 ± 21% +7111.8% 700365 ± 0% sched_debug.cpu.sched_goidle.max 141.94 ± 9% +2.4e+05% 338951 ± 0% sched_debug.cpu.sched_goidle.min 1043 ± 13% +14535.0% 152743 ± 0% sched_debug.cpu.sched_goidle.stddev 5761 ± 2% +10460.0% 608462 ± 0% sched_debug.cpu.ttwu_count.avg 67879 ± 9% +957.4% 717750 ± 0% sched_debug.cpu.ttwu_count.max 681.25 ± 3% +74539.0% 508478 ± 0% sched_debug.cpu.ttwu_count.min 10967 ± 6% +674.4% 84933 ± 0% sched_debug.cpu.ttwu_count.stddev 4609 ± 4% +1430.2% 70534 ± 0% sched_debug.cpu.ttwu_local.avg 64856 ± 10% +30.3% 84501 ± 0% sched_debug.cpu.ttwu_local.max 377.81 ± 3% +15018.1% 57117 ± 0% sched_debug.cpu.ttwu_local.min 290531 ± 0% +62.4% 471892 ± 0% sched_debug.cpu_clk 287233 ± 1% +63.5% 469728 ± 0% sched_debug.ktime 0.11 ± 0% -40.0% 0.07 ± 0% sched_debug.rt_rq:/.rt_nr_running.max 0.01 ± 0% -35.1% 0.01 ± 15% sched_debug.rt_rq:/.rt_nr_running.stddev 0.03 ± 25% -62.4% 0.01 ± 22% sched_debug.rt_rq:/.rt_time.avg 2.82 ± 8% -61.3% 1.09 ± 30% sched_debug.rt_rq:/.rt_time.max 0.25 ± 14% -61.2% 0.10 ± 26% sched_debug.rt_rq:/.rt_time.stddev 290531 ± 0% +62.4% 471892 ± 0% sched_debug.sched_clk vm-scalability.throughput 8e+07 *+--------------------------------*----------------*----------------* | .. . | 7e+07 ++ . .. | 6e+07 ++ . . | | . . | 5e+07 ++ . . | O .. O . O O O 4e+07 ++ . .. | | . . | 3e+07 ++ . . | 2e+07 ++ . . | | .. . | 1e+07 ++ . .. | | . | 0 ++---------------*--------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample *************************************************************************************************** lkp-hsw-ep2: 72 threads Brickland Haswell-EP with 128G memory ========================================================================================= compiler/cpufreq_governor/kconfig/nr_task/rootfs/runtime/size/tbox_group/test/testcase: gcc-4.9/performance/x86_64-rhel/1/debian-x86_64-2015-02-07.cgz/300s/8T/lkp-hsw-ep2/anon-w-seq/vm-scalability commit: v4.7-rc7 8296d37010 ("Speeds up clearing huge pages using work queue") v4.7-rc7 8296d3701014cd804bf981b5e2 ---------------- -------------------------- fail:runs %reproduction fail:runs | | | %stddev %change %stddev \ | \ 2541668 ± 0% +27.7% 3245849 ± 0% vm-scalability.throughput 1505 ± 8% +81222.9% 1224180 ± 0% vm-scalability.time.involuntary_context_switches 7675912 ± 4% -74.1% 1988431 ± 0% vm-scalability.time.minor_page_faults 99.00 ± 0% -28.3% 71.00 ± -1% vm-scalability.time.percent_of_cpu_this_job_got 415.33 ± 0% -93.1% 28.47 ± -3% vm-scalability.time.system_time 466.24 ± 0% +27.9% 596.13 ± 0% vm-scalability.time.user_time 909.67 ± 2% +1.3e+05% 1223534 ± 0% vm-scalability.time.voluntary_context_switches 18262 ± 10% -19.1% 14781 ± 0% interrupts.CAL:Function_call_interrupts 162441 ± 5% -9.7% 146748 ± 0% meminfo.DirectMap4k 1145 ± 4% +2149.1% 25760 ± 0% vmstat.system.cs 0.00 ± -1% +Inf% 1222419 ± 0% latency_stats.hits.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 2.383e+08 ± 0% latency_stats.sum.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 94072 ± 19% +499.5% 563946 ± 0% softirqs.RCU 54289 ± 2% +1131.0% 668289 ± 0% softirqs.SCHED 742038 ± 0% +38.0% 1024212 ± 0% softirqs.TIMER 4039131 ± 6% -99.6% 14187 ± 0% numa-numastat.node0.numa_foreign 2527978 ± 4% -71.2% 726885 ± 0% numa-numastat.node0.numa_miss 1788832 ± 0% +26.3% 2260104 ± 0% numa-numastat.node1.local_node 2529795 ± 4% -71.8% 713317 ± 0% numa-numastat.node1.numa_foreign 1788832 ± 0% +26.3% 2260105 ± 0% numa-numastat.node1.numa_hit 4040948 ± 6% -100.0% 619.00 ± 0% numa-numastat.node1.numa_miss 1552444 ± 21% +156.3% 3978652 ± 0% cpuidle.C1-HSW.time 185441 ± 6% +202.9% 561626 ± 0% cpuidle.C1-HSW.usage 4576536 ± 11% +4216.5% 1.975e+08 ± 0% cpuidle.C1E-HSW.time 24584 ± 16% +6947.3% 1732523 ± 0% cpuidle.C1E-HSW.usage 19455172 ± 5% +15021.2% 2.942e+09 ± 0% cpuidle.C3-HSW.time 63967 ± 3% +11258.7% 7265839 ± 0% cpuidle.C3-HSW.usage 1.596e+08 ± 19% -27.9% 1.152e+08 ± 0% cpuidle.POLL.time 4311 ± 7% +396.5% 21409 ± 0% cpuidle.POLL.usage 953.33 ± 5% +70.8% 1628 ± 0% slabinfo.blkdev_requests.active_objs 953.33 ± 5% +70.8% 1628 ± 0% slabinfo.blkdev_requests.num_objs 19293 ± 2% +17.0% 22580 ± 0% slabinfo.kmalloc-256.active_objs 20002 ± 2% +19.7% 23941 ± 0% slabinfo.kmalloc-256.num_objs 15084 ± 7% +12.5% 16972 ± 0% slabinfo.kmalloc-512.active_objs 15222 ± 7% +11.8% 17014 ± 0% slabinfo.kmalloc-512.num_objs 1385 ± 4% +30.3% 1805 ± 0% slabinfo.mnt_cache.active_objs 1385 ± 4% +30.3% 1805 ± 0% slabinfo.mnt_cache.num_objs 5.28 ± 1% +7.2% 5.66 ±-17% turbostat.%Busy 125.33 ± 1% +9.3% 137.00 ± 0% turbostat.Avg_MHz 24.31 ± 0% +27.4% 30.97 ± -3% turbostat.CPU%c1 0.02 ± 0% +19350.0% 3.89 ±-25% turbostat.CPU%c3 70.38 ± 0% -15.5% 59.48 ± -1% turbostat.CPU%c6 31.62 ± 1% -31.5% 21.67 ± -4% turbostat.Pkg%pc2 96.45 ± 0% +6.4% 102.66 ± 0% turbostat.PkgWatt 35.36 ± 1% +9.2% 38.61 ± -2% turbostat.RAMWatt 6639740 ± 6% -90.2% 647733 ± 0% proc-vmstat.numa_foreign 3542448 ± 0% +15.2% 4082184 ± 0% proc-vmstat.numa_hit 919505 ± 0% -20.6% 730368 ± 0% proc-vmstat.numa_huge_pte_updates 3542447 ± 0% +15.2% 4082183 ± 0% proc-vmstat.numa_local 6639740 ± 6% -90.2% 647733 ± 0% proc-vmstat.numa_miss 4.73e+08 ± 0% -20.9% 3.74e+08 ± 0% proc-vmstat.numa_pte_updates 5894825 ± 3% -18.7% 4793507 ± 0% proc-vmstat.pgalloc_dma32 4.914e+08 ± 0% +27.1% 6.247e+08 ± 0% proc-vmstat.pgalloc_normal 9454924 ± 4% -60.4% 3746598 ± 0% proc-vmstat.pgfault 4.808e+08 ± 0% +27.5% 6.13e+08 ± 0% proc-vmstat.pgfree 921343 ± 0% +29.2% 1190559 ± 0% proc-vmstat.thp_deferred_split_page 953086 ± 0% +28.3% 1222419 ± 0% proc-vmstat.thp_fault_alloc 12910 ± 6% -90.5% 1232 ± 0% proc-vmstat.thp_fault_fallback 15951920 ± 3% -33.0% 10681427 ± 0% numa-meminfo.node0.Active 15937037 ± 3% -33.1% 10666883 ± 0% numa-meminfo.node0.Active(anon) 15854293 ± 3% -33.0% 10628859 ± 0% numa-meminfo.node0.AnonHugePages 15914382 ± 3% -33.1% 10644541 ± 0% numa-meminfo.node0.AnonPages 10390 ± 25% -35.9% 6658 ± 0% numa-meminfo.node0.Mapped 49241735 ± 1% +10.8% 54576665 ± 0% numa-meminfo.node0.MemFree 16644983 ± 3% -32.1% 11310054 ± 0% numa-meminfo.node0.MemUsed 32726 ± 3% -30.0% 22908 ± 0% numa-meminfo.node0.PageTables 57921 ± 7% +15.2% 66713 ± 0% numa-meminfo.node0.SUnreclaim 17135973 ± 2% +29.0% 22108234 ± 0% numa-meminfo.node1.Active 17121188 ± 2% +29.0% 22093251 ± 0% numa-meminfo.node1.Active(anon) 17065962 ± 2% +29.1% 22037536 ± 0% numa-meminfo.node1.AnonHugePages 17112745 ± 2% +28.8% 22046594 ± 0% numa-meminfo.node1.AnonPages 48333766 ± 0% -10.4% 43287833 ± 0% numa-meminfo.node1.MemFree 17696485 ± 2% +28.5% 22742414 ± 0% numa-meminfo.node1.MemUsed 34985 ± 2% +26.9% 44397 ± 0% numa-meminfo.node1.PageTables 29141 ± 2% -9.3% 26425 ± 0% numa-meminfo.node1.SReclaimable 3984492 ± 3% -33.1% 2666937 ± 0% numa-vmstat.node0.nr_active_anon 3979198 ± 3% -33.1% 2661266 ± 0% numa-vmstat.node0.nr_anon_pages 7741 ± 3% -33.0% 5190 ± 0% numa-vmstat.node0.nr_anon_transparent_hugepages 12310193 ± 1% +10.8% 13643946 ± 0% numa-vmstat.node0.nr_free_pages 2597 ± 25% -35.9% 1664 ± 0% numa-vmstat.node0.nr_mapped 8184 ± 3% -30.0% 5726 ± 0% numa-vmstat.node0.nr_page_table_pages 14480 ± 7% +15.2% 16678 ± 0% numa-vmstat.node0.nr_slab_unreclaimable 2203159 ± 2% -96.3% 81344 ± 0% numa-vmstat.node0.numa_foreign 1252855 ± 8% -69.9% 376939 ± 0% numa-vmstat.node0.numa_miss 4288953 ± 3% +28.8% 5522754 ± 0% numa-vmstat.node1.nr_active_anon 4282323 ± 3% +28.7% 5510523 ± 0% numa-vmstat.node1.nr_anon_pages 8336 ± 3% +29.0% 10758 ± 0% numa-vmstat.node1.nr_anon_transparent_hugepages 12074772 ± 0% -10.4% 10822526 ± 0% numa-vmstat.node1.nr_free_pages 8751 ± 2% +26.8% 11097 ± 0% numa-vmstat.node1.nr_page_table_pages 7284 ± 2% -9.3% 6606 ± 0% numa-vmstat.node1.nr_slab_reclaimable 1217231 ± 8% -73.4% 324012 ± 0% numa-vmstat.node1.numa_foreign 1146153 ± 1% +23.0% 1410186 ± 0% numa-vmstat.node1.numa_hit 1146153 ± 1% +23.0% 1410185 ± 0% numa-vmstat.node1.numa_local 2167535 ± 2% -98.7% 28416 ± 0% numa-vmstat.node1.numa_miss 7.842e+10 ± 2% +30.3% 1.022e+11 ± 0% perf-stat.L1-dcache-load-misses 9.966e+11 ± 1% +20.1% 1.197e+12 ± 0% perf-stat.L1-dcache-loads 5.952e+11 ± 2% +26.9% 7.553e+11 ± 0% perf-stat.L1-dcache-stores 2.068e+10 ± 0% +16.8% 2.416e+10 ± 0% perf-stat.L1-icache-load-misses 2.776e+08 ± 2% +134.6% 6.513e+08 ± 0% perf-stat.LLC-load-misses 8.58e+09 ± 1% +59.0% 1.364e+10 ± 0% perf-stat.LLC-loads 1.001e+09 ± 3% +52.9% 1.529e+09 ± 0% perf-stat.LLC-store-misses 4.052e+09 ± 0% +56.1% 6.325e+09 ± 0% perf-stat.LLC-stores 1.373e+12 ± 0% +24.7% 1.712e+12 ± 0% perf-stat.branch-instructions 5.29e+09 ± 3% +26.3% 6.68e+09 ± 0% perf-stat.branch-load-misses 1.399e+12 ± 2% +21.2% 1.695e+12 ± 0% perf-stat.branch-loads 5.513e+09 ± 1% +33.4% 7.353e+09 ± 0% perf-stat.branch-misses 2.717e+11 ± 0% +10.2% 2.993e+11 ± 0% perf-stat.bus-cycles 1.352e+09 ± 0% +59.2% 2.152e+09 ± 0% perf-stat.cache-misses 2.986e+10 ± 1% +51.8% 4.533e+10 ± 0% perf-stat.cache-references 1008305 ± 4% +2140.3% 22588837 ± 0% perf-stat.context-switches 6.857e+12 ± 2% +8.6% 7.444e+12 ± 0% perf-stat.cpu-cycles 55660 ± 1% +9.6% 60990 ± 0% perf-stat.cpu-migrations 2.076e+09 ± 0% +22.2% 2.536e+09 ± 0% perf-stat.dTLB-load-misses 9.948e+11 ± 4% +12.1% 1.115e+12 ± 0% perf-stat.dTLB-loads 4.047e+08 ± 0% -1.9% 3.97e+08 ± 0% perf-stat.dTLB-store-misses 6.139e+11 ± 0% +14.0% 6.998e+11 ± 0% perf-stat.dTLB-stores 6.095e+08 ± 0% +6.1% 6.466e+08 ± 0% perf-stat.iTLB-load-misses 3.27e+08 ± 3% +24.0% 4.055e+08 ± 0% perf-stat.iTLB-loads 4.604e+12 ± 2% +25.3% 5.77e+12 ± 0% perf-stat.instructions 9492594 ± 3% -60.0% 3798901 ± 0% perf-stat.minor-faults 38705676 ± 6% +916.0% 3.933e+08 ± 0% perf-stat.node-load-misses 2.455e+08 ± 2% +7.0% 2.627e+08 ± 0% perf-stat.node-loads 25987631 ± 6% +209.5% 80421284 ± 0% perf-stat.node-store-misses 9.802e+08 ± 3% +43.7% 1.408e+09 ± 0% perf-stat.node-stores 9492659 ± 3% -60.0% 3798896 ± 0% perf-stat.page-faults 6.082e+12 ± 1% +14.2% 6.945e+12 ± 0% perf-stat.ref-cycles 24.95 ± 18% -96.4% 0.91 ±-109% perf-profile.cycles-pp.__do_page_fault.do_page_fault.page_fault 2.14 ± 8% -27.9% 1.54 ±-64% perf-profile.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.local_apic_timer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt 1.35 ± 9% -21.7% 1.06 ±-94% perf-profile.cycles-pp.__tick_nohz_idle_enter.tick_nohz_irq_exit.irq_exit.smp_apic_timer_interrupt.apic_timer_interrupt 7.53 ± 8% -19.4% 6.07 ±-16% perf-profile.cycles-pp.apic_timer_interrupt.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.call_console_drivers.constprop.23.console_unlock.vprintk_emit.vprintk_default.printk 70.21 ± 5% +12.1% 78.73 ± -1% perf-profile.cycles-pp.call_cpuidle.cpu_startup_entry.start_secondary 23.39 ± 19% -100.0% 0.00 ± -1% perf-profile.cycles-pp.clear_page_c_e.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 13.46 ± -7% perf-profile.cycles-pp.clear_page_c_e.process_one_work.worker_thread.kthread.ret_from_fork 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.console_unlock.vprintk_emit.vprintk_default.printk.perf_duration_warn 71.86 ± 5% +12.5% 80.87 ± -1% perf-profile.cycles-pp.cpu_startup_entry.start_secondary 70.14 ± 5% +12.1% 78.64 ± -1% perf-profile.cycles-pp.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 61.19 ± 5% +17.8% 72.06 ± -1% perf-profile.cycles-pp.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 24.87 ± 18% -96.6% 0.84 ±-119% perf-profile.cycles-pp.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 24.95 ± 18% -96.4% 0.91 ±-109% perf-profile.cycles-pp.do_page_fault.page_fault 24.93 ± 18% -96.5% 0.88 ±-113% perf-profile.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 2.94 ± 8% -22.4% 2.28 ±-43% perf-profile.cycles-pp.hrtimer_interrupt.local_apic_timer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter 1.40 ± 8% -20.0% 1.12 ±-89% perf-profile.cycles-pp.irq_enter.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter.call_cpuidle 1.92 ± 9% -17.3% 1.59 ±-62% perf-profile.cycles-pp.irq_exit.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter.call_cpuidle 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.irq_work_interrupt.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.irq_work_run.smp_irq_work_interrupt.irq_work_interrupt.cpuidle_enter.call_cpuidle 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.irq_work_run_list.irq_work_run.smp_irq_work_interrupt.irq_work_interrupt.cpuidle_enter 0.00 ± -1% +Inf% 15.67 ± -6% perf-profile.cycles-pp.kthread.ret_from_fork 3.20 ± 8% -22.3% 2.49 ±-40% perf-profile.cycles-pp.local_apic_timer_interrupt.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter.call_cpuidle 24.96 ± 18% -96.4% 0.91 ±-109% perf-profile.cycles-pp.page_fault 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.perf_duration_warn.irq_work_run_list.irq_work_run.smp_irq_work_interrupt.irq_work_interrupt 0.89 ± 17% -24.7% 0.67 ±-149% perf-profile.cycles-pp.perf_mux_hrtimer_handler.__hrtimer_run_queues.hrtimer_interrupt.local_apic_timer_interrupt.smp_apic_timer_interrupt 6.95 ± 32% +144.6% 17.01 ± -5% perf-profile.cycles-pp.poll_idle.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.printk.perf_duration_warn.irq_work_run_list.irq_work_run.smp_irq_work_interrupt 0.00 ± -1% +Inf% 14.75 ± -6% perf-profile.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork 0.00 ± -1% +Inf% 15.67 ± -6% perf-profile.cycles-pp.ret_from_fork 7.16 ± 8% -19.3% 5.78 ±-17% perf-profile.cycles-pp.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter.call_cpuidle.cpu_startup_entry 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.smp_irq_work_interrupt.irq_work_interrupt.cpuidle_enter.call_cpuidle.cpu_startup_entry 72.17 ± 5% +12.5% 81.17 ± -1% perf-profile.cycles-pp.start_secondary 1.42 ± 11% -20.4% 1.13 ±-88% perf-profile.cycles-pp.tick_nohz_irq_exit.irq_exit.smp_apic_timer_interrupt.apic_timer_interrupt.cpuidle_enter 1.02 ± 8% -24.3% 0.77 ±-129% perf-profile.cycles-pp.tick_nohz_stop_sched_tick.__tick_nohz_idle_enter.tick_nohz_irq_exit.irq_exit.smp_apic_timer_interrupt 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.vprintk_default.printk.perf_duration_warn.irq_work_run_list.irq_work_run 0.89 ± 8% -100.0% 0.00 ± -1% perf-profile.cycles-pp.vprintk_emit.vprintk_default.printk.perf_duration_warn.irq_work_run_list 0.00 ± -1% +Inf% 15.43 ± -6% perf-profile.cycles-pp.worker_thread.kthread.ret_from_fork 0.00 ± 0% +8e+08% 8.05 ±-12% sched_debug.cfs_rq:/.MIN_vruntime.avg 0.00 ± 0% +5.8e+10% 579.51 ± 0% sched_debug.cfs_rq:/.MIN_vruntime.max 0.00 ± 0% +4.6e+24% 67.82 ± -1% sched_debug.cfs_rq:/.MIN_vruntime.stddev 6069 ± 0% +53.5% 9314 ± 0% sched_debug.cfs_rq:/.exec_clock.avg 47113 ± 18% +24.7% 58747 ± 0% sched_debug.cfs_rq:/.exec_clock.max 13592 ± 9% +72.6% 23454 ± 0% sched_debug.cfs_rq:/.load.avg 410493 ± 4% +96.9% 808227 ± 0% sched_debug.cfs_rq:/.load.max 66987 ± 6% +68.7% 112976 ± 0% sched_debug.cfs_rq:/.load.stddev 12.14 ± 3% +45.7% 17.69 ± -5% sched_debug.cfs_rq:/.load_avg.avg 476.40 ± 16% -45.2% 261.07 ± 0% sched_debug.cfs_rq:/.load_avg.max 0.00 ± 0% +8e+08% 8.05 ±-12% sched_debug.cfs_rq:/.max_vruntime.avg 0.00 ± 0% +5.8e+10% 579.51 ± 0% sched_debug.cfs_rq:/.max_vruntime.max 0.00 ± 0% +4.6e+24% 67.82 ± -1% sched_debug.cfs_rq:/.max_vruntime.stddev 36291 ± 8% -52.3% 17303 ± 0% sched_debug.cfs_rq:/.min_vruntime.avg 313191 ± 19% -69.5% 95523 ± 0% sched_debug.cfs_rq:/.min_vruntime.max 1743 ± 13% +28.9% 2248 ± 0% sched_debug.cfs_rq:/.min_vruntime.min 63122 ± 7% -75.7% 15355 ± 0% sched_debug.cfs_rq:/.min_vruntime.stddev 0.05 ± 5% +16.5% 0.06 ±-1636% sched_debug.cfs_rq:/.nr_running.avg 0.01 ± 0% +100.0% 0.03 ±-3857% sched_debug.cfs_rq:/.nr_spread_over.avg 0.93 ± 0% +50.0% 1.40 ±-71% sched_debug.cfs_rq:/.nr_spread_over.max 0.11 ± 0% +61.2% 0.18 ±-568% sched_debug.cfs_rq:/.nr_spread_over.stddev 6.26 ± 12% -23.0% 4.82 ±-20% sched_debug.cfs_rq:/.runnable_load_avg.avg 406.09 ± 16% -52.8% 191.87 ± 0% sched_debug.cfs_rq:/.runnable_load_avg.max 47.79 ± 16% -45.1% 26.24 ± -3% sched_debug.cfs_rq:/.runnable_load_avg.stddev 286209 ± 19% -75.2% 70993 ± 0% sched_debug.cfs_rq:/.spread0.max 63124 ± 7% -75.7% 15355 ± 0% sched_debug.cfs_rq:/.spread0.stddev 22.63 ± 0% +28.5% 29.07 ± -3% sched_debug.cfs_rq:/.util_avg.avg 994.69 ± 0% -26.9% 727.33 ± 0% sched_debug.cfs_rq:/.util_avg.max 120.31 ± 0% -19.2% 97.22 ± -1% sched_debug.cfs_rq:/.util_avg.stddev 652924 ± 4% -70.7% 191467 ± 0% sched_debug.cpu.avg_idle.min 62909 ± 4% +154.2% 159903 ± 0% sched_debug.cpu.avg_idle.stddev 31.29 ± 19% -89.6% 3.27 ±-30% sched_debug.cpu.clock.stddev 31.29 ± 19% -89.6% 3.27 ±-30% sched_debug.cpu.clock_task.stddev 6.24 ± 13% -54.8% 2.82 ±-35% sched_debug.cpu.cpu_load[0].avg 405.91 ± 16% -70.9% 118.27 ± 0% sched_debug.cpu.cpu_load[0].max 47.77 ± 16% -67.4% 15.56 ± -6% sched_debug.cpu.cpu_load[0].stddev 7.95 ± 2% +76.1% 13.99 ± -7% sched_debug.cpu.cpu_load[1].avg 449.78 ± 13% -51.3% 219.20 ± 0% sched_debug.cpu.cpu_load[1].max 7.48 ± 4% +86.9% 13.99 ± -7% sched_debug.cpu.cpu_load[2].avg 435.38 ± 14% -49.9% 218.07 ± 0% sched_debug.cpu.cpu_load[2].max 6.95 ± 7% +103.7% 14.16 ± -7% sched_debug.cpu.cpu_load[3].avg 423.78 ± 15% -48.7% 217.47 ± 0% sched_debug.cpu.cpu_load[3].max 6.44 ± 11% +121.7% 14.29 ± -6% sched_debug.cpu.cpu_load[4].avg 411.18 ± 16% -46.7% 219.20 ± 0% sched_debug.cpu.cpu_load[4].max 13803 ± 11% +50.4% 20766 ± 0% sched_debug.cpu.load.avg 423194 ± 7% +50.1% 635245 ± 0% sched_debug.cpu.load.max 68322 ± 9% +42.2% 97131 ± 0% sched_debug.cpu.load.stddev 0.00 ± 8% -64.0% 0.00 ±-5290916% sched_debug.cpu.next_balance.stddev 13819 ± 1% +614.7% 98776 ± 0% sched_debug.cpu.nr_load_updates.avg 56631 ± 14% +333.7% 245596 ± 0% sched_debug.cpu.nr_load_updates.max 4329 ± 4% +501.6% 26043 ± 0% sched_debug.cpu.nr_load_updates.min 11927 ± 6% +301.9% 47932 ± 0% sched_debug.cpu.nr_load_updates.stddev 0.05 ± 4% +13.4% 0.06 ±-1661% sched_debug.cpu.nr_running.avg 7481 ± 4% +1919.5% 151094 ± 0% sched_debug.cpu.nr_switches.avg 40224 ± 18% +1521.6% 652301 ± 0% sched_debug.cpu.nr_switches.max 868.31 ± 9% +15.1% 999.67 ± 0% sched_debug.cpu.nr_switches.min 7780 ± 13% +2083.9% 169922 ± 0% sched_debug.cpu.nr_switches.stddev 8.00 ± 10% +19.2% 9.53 ±-10% sched_debug.cpu.nr_uninterruptible.max 7550 ± 5% +1903.0% 151224 ± 0% sched_debug.cpu.sched_count.avg 58276 ± 18% +1012.6% 648402 ± 0% sched_debug.cpu.sched_count.max 588.11 ± 12% +20.5% 708.67 ± 0% sched_debug.cpu.sched_count.min 10040 ± 12% +1592.6% 169943 ± 0% sched_debug.cpu.sched_count.stddev 3221 ± 5% +1975.9% 66868 ± 0% sched_debug.cpu.sched_goidle.avg 19376 ± 18% +1466.6% 303542 ± 0% sched_debug.cpu.sched_goidle.max 254.87 ± 10% +20.0% 305.93 ± 0% sched_debug.cpu.sched_goidle.min 3709 ± 14% +1995.9% 77756 ± 0% sched_debug.cpu.sched_goidle.stddev 3119 ± 5% +2302.0% 74926 ± 0% sched_debug.cpu.ttwu_count.avg 21818 ± 32% +2207.3% 503414 ± 0% sched_debug.cpu.ttwu_count.max 3351 ± 23% +2595.9% 90348 ± 0% sched_debug.cpu.ttwu_count.stddev 655.26 ± 4% +1504.1% 10510 ± 0% sched_debug.cpu.ttwu_local.avg 3182 ± 18% +3784.0% 123596 ± 0% sched_debug.cpu.ttwu_local.max 170.62 ± 5% +23.5% 210.67 ± 0% sched_debug.cpu.ttwu_local.min 439.43 ± 0% +3789.0% 17089 ± 0% sched_debug.cpu.ttwu_local.stddev 0.00 ±141% +200.0% 0.01 ±-12817% sched_debug.rt_rq:/.rt_nr_running.stddev *************************************************************************************************** lkp-bdw-ep2: 88 threads Broadwell-EP with 128G memory ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/size/tbox_group/test/testcase: gcc-4.9/performance/x86_64-rhel/debian-x86_64-2015-02-07.cgz/300s/8T/lkp-bdw-ep2/anon-w-seq/vm-scalability commit: v4.7-rc7 8296d37010 ("Speeds up clearing huge pages using work queue") v4.7-rc7 8296d3701014cd804bf981b5e2 ---------------- -------------------------- fail:runs %reproduction fail:runs | | | %stddev %change %stddev \ | \ 0.06 ± 7% -79.8% 0.01 ± 1% vm-scalability.stddev 38146345 ± 0% +33.5% 50940657 ± 0% vm-scalability.throughput 554.56 ± 0% -26.8% 406.16 ± 0% vm-scalability.time.elapsed_time 554.56 ± 0% -26.8% 406.16 ± 0% vm-scalability.time.elapsed_time.max 346652 ± 0% +2921.7% 10474845 ± 0% vm-scalability.time.involuntary_context_switches 7889 ± 0% -56.7% 3415 ± 0% vm-scalability.time.percent_of_cpu_this_job_got 22171 ± 0% -74.4% 5673 ± 0% vm-scalability.time.system_time 21583 ± 0% -62.0% 8200 ± 0% vm-scalability.time.user_time 58669 ± 0% +20490.9% 12080480 ± 0% vm-scalability.time.voluntary_context_switches 20909 ± 5% +13.7% 23776 ± 4% interrupts.CAL:Function_call_interrupts 1.33 ± 35% -100.0% 0.00 ± -1% numa-numastat.node0.other_node 594.79 ± 0% -25.3% 444.24 ± 1% uptime.boot 8150 ± 1% +62.1% 13214 ± 3% uptime.idle 23305202 ± 0% +23.1% 28680490 ± 0% meminfo.AnonHugePages 20033 ± 0% +43.8% 28799 ± 0% meminfo.KernelStack 51997 ± 0% +20.8% 62802 ± 0% meminfo.PageTables 81.33 ± 0% -9.4% 73.67 ± 1% vmstat.procs.r 4618 ± 3% +5168.1% 243282 ± 0% vmstat.system.cs 93458 ± 1% +13.2% 105783 ± 0% vmstat.system.in 16988 ± 1% -14.3% 14557 ± 1% softirqs.NET_RX 4355772 ± 2% +64.9% 7182335 ± 0% softirqs.RCU 303674 ± 0% +1935.3% 6180796 ± 0% softirqs.SCHED 22334603 ± 0% -40.0% 13394325 ± 0% softirqs.TIMER 5747 ± 1% +20.2% 6906 ± 0% numa-vmstat.node0.nr_anon_transparent_hugepages 745.00 ± 1% +34.0% 998.00 ± 1% numa-vmstat.node0.nr_kernel_stack 6543 ± 1% +18.6% 7763 ± 0% numa-vmstat.node0.nr_page_table_pages 23141 ± 3% +10.3% 25535 ± 0% numa-vmstat.node0.nr_slab_unreclaimable 5917 ± 0% +18.7% 7026 ± 0% numa-vmstat.node1.nr_anon_transparent_hugepages 506.67 ± 1% +58.1% 801.00 ± 1% numa-vmstat.node1.nr_kernel_stack 1701 ± 0% +56.3% 2658 ± 25% numa-vmstat.node1.nr_mapped 6763 ± 0% +16.1% 7854 ± 1% numa-vmstat.node1.nr_page_table_pages 90.16 ± 0% -18.3% 73.69 ± 0% turbostat.%Busy 2516 ± 0% -18.8% 2043 ± 0% turbostat.Avg_MHz 5.11 ± 1% +364.6% 23.74 ± 0% turbostat.CPU%c1 0.03 ± 0% +2444.4% 0.76 ± 0% turbostat.CPU%c3 4.71 ± 1% -61.7% 1.80 ± 1% turbostat.CPU%c6 1.69 ± 1% -87.4% 0.21 ± 11% turbostat.Pkg%pc2 252.57 ± 0% +2.8% 259.69 ± 0% turbostat.PkgWatt 132.98 ± 0% -2.4% 129.82 ± 0% turbostat.RAMWatt 7716175 ± 16% +12917.5% 1.004e+09 ± 0% cpuidle.C1-BDW.time 83323 ± 13% +15468.5% 12972137 ± 0% cpuidle.C1-BDW.usage 5597051 ± 8% +17317.8% 9.749e+08 ± 0% cpuidle.C1E-BDW.time 36098 ± 2% +28933.3% 10480645 ± 1% cpuidle.C1E-BDW.usage 46920966 ± 12% +8645.3% 4.103e+09 ± 0% cpuidle.C3-BDW.time 124855 ± 10% +13265.3% 16687376 ± 0% cpuidle.C3-BDW.usage 4.774e+09 ± 1% -29.4% 3.37e+09 ± 0% cpuidle.C6-BDW.time 5056262 ± 1% +25.7% 6355777 ± 0% cpuidle.C6-BDW.usage 1549 ± 11% +6459.9% 101634 ± 1% cpuidle.POLL.usage 11825435 ± 0% +19.9% 14173072 ± 0% numa-meminfo.node0.AnonHugePages 11934 ± 1% +34.0% 15989 ± 1% numa-meminfo.node0.KernelStack 26291 ± 0% +18.4% 31133 ± 1% numa-meminfo.node0.PageTables 92565 ± 4% +10.4% 102148 ± 0% numa-meminfo.node0.SUnreclaim 124198 ± 4% +8.7% 134999 ± 0% numa-meminfo.node0.Slab 12226440 ± 1% +17.9% 14419573 ± 0% numa-meminfo.node1.AnonHugePages 8105 ± 1% +58.2% 12819 ± 1% numa-meminfo.node1.KernelStack 6834 ± 0% +55.4% 10619 ± 24% numa-meminfo.node1.Mapped 27246 ± 1% +15.5% 31478 ± 1% numa-meminfo.node1.PageTables 11383 ± 1% +23.2% 14021 ± 0% proc-vmstat.nr_anon_transparent_hugepages 1251 ± 0% +43.8% 1800 ± 0% proc-vmstat.nr_kernel_stack 13036 ± 1% +20.6% 15719 ± 0% proc-vmstat.nr_page_table_pages 112629 ± 3% -99.6% 415.00 ± 17% proc-vmstat.numa_hint_faults 88148 ± 4% -99.6% 332.00 ± 17% proc-vmstat.numa_hint_faults_local 6378041 ± 0% -100.0% 0.00 ± -1% proc-vmstat.numa_huge_pte_updates 19227 ± 3% -99.8% 32.67 ± 56% proc-vmstat.numa_pages_migrated 3.272e+09 ± 0% -100.0% 668.00 ± 36% proc-vmstat.numa_pte_updates 10408 ± 4% +8.7% 11311 ± 6% proc-vmstat.pgactivate 1190 ± 7% -100.0% 0.00 ± -1% proc-vmstat.pgmigrate_fail 19227 ± 3% -99.8% 32.67 ± 56% proc-vmstat.pgmigrate_success 82759 ±117% -99.1% 737.33 ±138% latency_stats.avg.down.console_lock.do_con_write.con_write.n_tty_write.tty_write.redirected_tty_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 996353 ± 0% latency_stats.hits.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 1817330 ± 0% latency_stats.hits.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 8326013 ± 0% latency_stats.hits.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 772874 ± 6% -85.9% 109215 ± 2% latency_stats.hits.pipe_wait.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 82817 ± 49% latency_stats.max.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 83729 ± 48% latency_stats.max.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 248080 ±117% -99.7% 739.00 ±137% latency_stats.max.down.console_lock.do_con_write.con_write.n_tty_write.tty_write.redirected_tty_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 12202 ± 5% latency_stats.max.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 2.619e+09 ± 0% latency_stats.sum.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 41841 ± 99% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.page_lock_anon_vma_read.rmap_walk_anon.rmap_walk.try_to_unmap.migrate_pages.migrate_misplaced_page.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 22928 ± 28% -100.0% 0.00 ± -1% latency_stats.sum.call_rwsem_down_read_failed.rmap_walk_anon.rmap_walk.remove_migration_ptes.migrate_pages.migrate_misplaced_page.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 4.892e+09 ± 0% latency_stats.sum.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 248278 ±117% -99.7% 759.33 ±132% latency_stats.sum.down.console_lock.do_con_write.con_write.n_tty_write.tty_write.redirected_tty_write.__vfs_write.vfs_write.SyS_write.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 4.98e+09 ± 0% latency_stats.sum.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 1145012 ± 2% -100.0% 0.00 ± -1% latency_stats.sum.wait_on_page_bit.__migration_entry_wait.migration_entry_wait.handle_pte_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 25922 ± 1% -55.4% 11563 ± 0% slabinfo.kmalloc-256.active_objs 414.00 ± 1% -41.1% 243.67 ± 1% slabinfo.kmalloc-256.active_slabs 26521 ± 1% -41.1% 15632 ± 1% slabinfo.kmalloc-256.num_objs 414.00 ± 1% -41.1% 243.67 ± 1% slabinfo.kmalloc-256.num_slabs 43609 ± 3% +34.5% 58654 ± 0% slabinfo.kmalloc-32.active_objs 340.33 ± 3% +34.5% 457.67 ± 0% slabinfo.kmalloc-32.active_slabs 43620 ± 3% +34.5% 58654 ± 0% slabinfo.kmalloc-32.num_objs 340.33 ± 3% +34.5% 457.67 ± 0% slabinfo.kmalloc-32.num_slabs 19070 ± 3% +33.7% 25496 ± 5% slabinfo.kmalloc-512.active_objs 298.67 ± 3% +33.6% 399.00 ± 5% slabinfo.kmalloc-512.active_slabs 19171 ± 3% +33.4% 25578 ± 5% slabinfo.kmalloc-512.num_objs 298.67 ± 3% +33.6% 399.00 ± 5% slabinfo.kmalloc-512.num_slabs 5418 ± 1% +8.6% 5885 ± 1% slabinfo.sighand_cache.active_objs 5466 ± 1% +8.5% 5931 ± 1% slabinfo.sighand_cache.num_objs 4158 ± 4% +9.9% 4569 ± 1% slabinfo.sock_inode_cache.active_objs 4158 ± 4% +9.9% 4569 ± 1% slabinfo.sock_inode_cache.num_objs 1796 ± 0% +30.4% 2342 ± 0% slabinfo.task_struct.active_objs 606.33 ± 0% +30.3% 790.33 ± 0% slabinfo.task_struct.active_slabs 1821 ± 0% +30.3% 2372 ± 0% slabinfo.task_struct.num_objs 606.33 ± 0% +30.3% 790.33 ± 0% slabinfo.task_struct.num_slabs 5.736e+11 ± 0% +4.8% 6.008e+11 ± 0% perf-stat.L1-dcache-load-misses 6.828e+12 ± 0% +33.2% 9.097e+12 ± 0% perf-stat.L1-dcache-loads 2.914e+12 ± 0% +6.0% 3.088e+12 ± 0% perf-stat.L1-dcache-stores 7.84e+09 ± 0% +174.9% 2.155e+10 ± 0% perf-stat.L1-icache-load-misses 3.023e+09 ± 0% +118.5% 6.604e+09 ± 0% perf-stat.LLC-load-misses 1.05e+10 ± 0% +145.8% 2.581e+10 ± 0% perf-stat.LLC-loads 5.669e+10 ± 0% -41.8% 3.3e+10 ± 0% perf-stat.LLC-store-misses 4.157e+11 ± 0% -15.6% 3.508e+11 ± 0% perf-stat.LLC-stores 1.117e+13 ± 0% +19.6% 1.335e+13 ± 0% perf-stat.branch-instructions 1.009e+09 ± 0% +422.6% 5.272e+09 ± 0% perf-stat.branch-load-misses 1.117e+13 ± 0% +19.7% 1.336e+13 ± 0% perf-stat.branch-loads 1.018e+09 ± 0% +420.5% 5.299e+09 ± 0% perf-stat.branch-misses 4.325e+12 ± 0% -40.4% 2.576e+12 ± 0% perf-stat.bus-cycles 1.64e+11 ± 0% -32.9% 1.101e+11 ± 0% perf-stat.cache-misses 6.914e+11 ± 0% -4.8% 6.583e+11 ± 0% perf-stat.cache-references 2556163 ± 4% +3779.8% 99173855 ± 0% perf-stat.context-switches 1.21e+14 ± 0% -40.6% 7.181e+13 ± 0% perf-stat.cpu-cycles 129774 ± 0% +6200.0% 8175820 ± 0% perf-stat.cpu-migrations 2.377e+08 ± 0% +306.5% 9.664e+08 ± 2% perf-stat.dTLB-load-misses 6.831e+12 ± 0% +33.1% 9.093e+12 ± 0% perf-stat.dTLB-loads 1.3e+08 ± 0% +63.0% 2.119e+08 ± 0% perf-stat.dTLB-store-misses 2.917e+12 ± 0% +5.9% 3.088e+12 ± 0% perf-stat.dTLB-stores 1.66e+08 ± 1% -4.0% 1.594e+08 ± 0% perf-stat.iTLB-load-misses 63264319 ± 1% +870.0% 6.136e+08 ± 0% perf-stat.iTLB-loads 3.594e+13 ± 0% +22.1% 4.39e+13 ± 0% perf-stat.instructions 22353737 ± 0% -1.5% 22022473 ± 0% perf-stat.minor-faults 4.773e+08 ± 1% +470.9% 2.725e+09 ± 0% perf-stat.node-load-misses 2.535e+09 ± 0% +52.9% 3.877e+09 ± 1% perf-stat.node-loads 1.319e+08 ± 1% +1521.6% 2.139e+09 ± 0% perf-stat.node-store-misses 5.666e+10 ± 0% -45.6% 3.084e+10 ± 0% perf-stat.node-stores 22353972 ± 0% -1.5% 22022566 ± 0% perf-stat.page-faults 9.501e+13 ± 0% -40.3% 5.67e+13 ± 0% perf-stat.ref-cycles 1.06 ± 2% -37.4% 0.66 ± 2% perf-profile.cycles-pp.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 0.00 ± -1% +Inf% 11.20 ± 0% perf-profile.cycles-pp.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 10.56 ± 5% -94.8% 0.55 ±141% perf-profile.cycles-pp.__do_page_fault.do_page_fault.page_fault 42.60 ± 0% -60.2% 16.94 ± 4% perf-profile.cycles-pp.__do_page_fault.do_page_fault.page_fault.do_unit 0.00 ± -1% +Inf% 4.53 ± 4% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 5.26 ± 4% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page 0.00 ± -1% +Inf% 3.15 ± 4% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 5.97 ± 1% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn.process_one_work.worker_thread 1.07 ± 2% -37.7% 0.67 ± 2% perf-profile.cycles-pp.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 6.42 ± 1% perf-profile.cycles-pp.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 1.67 ± 12% +831.7% 15.59 ± 1% perf-profile.cycles-pp.call_cpuidle.cpu_startup_entry.start_secondary 1.69 ± 1% +873.4% 16.48 ± 0% perf-profile.cycles-pp.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 1.36 ± 1% perf-profile.cycles-pp.clear_mem.process_one_work.worker_thread.kthread.ret_from_fork 48.62 ± 0% -100.0% 0.00 ± -1% perf-profile.cycles-pp.clear_page_c_e.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 28.49 ± 2% perf-profile.cycles-pp.clear_page_c_e.process_one_work.worker_thread.kthread.ret_from_fork 1.69 ± 12% +857.6% 16.18 ± 1% perf-profile.cycles-pp.cpu_startup_entry.start_secondary 1.67 ± 13% +833.5% 15.59 ± 1% perf-profile.cycles-pp.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 1.64 ± 13% +841.8% 15.48 ± 1% perf-profile.cycles-pp.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 0.00 ± -1% +Inf% 4.00 ± 3% perf-profile.cycles-pp.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 52.83 ± 0% -67.2% 17.32 ± 0% perf-profile.cycles-pp.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 10.56 ± 5% -94.8% 0.55 ±141% perf-profile.cycles-pp.do_page_fault.page_fault 42.60 ± 0% -60.2% 16.95 ± 4% perf-profile.cycles-pp.do_page_fault.page_fault.do_unit 86.70 ± 0% -49.5% 43.82 ± 3% perf-profile.cycles-pp.do_unit 1.05 ± 1% -37.6% 0.65 ± 2% perf-profile.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault 10.53 ± 5% -94.8% 0.54 ±141% perf-profile.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 42.49 ± 0% -60.3% 16.88 ± 4% perf-profile.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault.do_unit 1.63 ± 13% +842.4% 15.39 ± 1% perf-profile.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry 0.00 ± -1% +Inf% 38.24 ± 1% perf-profile.cycles-pp.kthread.ret_from_fork 0.00 ± -1% +Inf% 4.54 ± 4% perf-profile.cycles-pp.mutex_lock.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 0.00 ± -1% +Inf% 5.26 ± 4% perf-profile.cycles-pp.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 3.16 ± 4% perf-profile.cycles-pp.mutex_lock.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 0.00 ± -1% +Inf% 5.98 ± 1% perf-profile.cycles-pp.mutex_lock.pwq_unbound_release_workfn.process_one_work.worker_thread.kthread 0.00 ± -1% +Inf% 4.52 ± 4% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key.clear_huge_page 0.00 ± -1% +Inf% 5.24 ± 4% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key 0.00 ± -1% +Inf% 3.13 ± 3% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.destroy_workqueue.clear_huge_page 0.00 ± -1% +Inf% 5.96 ± 1% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn.process_one_work 0.00 ± -1% +Inf% 4.27 ± 4% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key 0.00 ± -1% +Inf% 4.94 ± 4% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs 0.00 ± -1% +Inf% 2.96 ± 4% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.destroy_workqueue 0.00 ± -1% +Inf% 5.69 ± 1% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn 10.56 ± 5% -94.8% 0.55 ±141% perf-profile.cycles-pp.page_fault 42.60 ± 0% -60.2% 16.95 ± 4% perf-profile.cycles-pp.page_fault.do_unit 0.00 ± -1% +Inf% 37.43 ± 1% perf-profile.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork 0.00 ± -1% +Inf% 6.06 ± 1% perf-profile.cycles-pp.pwq_unbound_release_workfn.process_one_work.worker_thread.kthread.ret_from_fork 0.00 ± -1% +Inf% 38.24 ± 1% perf-profile.cycles-pp.ret_from_fork 1.69 ± 12% +858.6% 16.20 ± 1% perf-profile.cycles-pp.start_secondary 0.00 ± -1% +Inf% 38.08 ± 1% perf-profile.cycles-pp.worker_thread.kthread.ret_from_fork 5.82 ± 86% +7.5e+06% 433918 ± 21% sched_debug.cfs_rq:/.MIN_vruntime.avg 353.62 ± 73% +1.1e+06% 3889704 ± 2% sched_debug.cfs_rq:/.MIN_vruntime.max 43.10 ± 77% +2.7e+06% 1183052 ± 12% sched_debug.cfs_rq:/.MIN_vruntime.stddev 242739 ± 0% -46.6% 129743 ± 0% sched_debug.cfs_rq:/.exec_clock.avg 245391 ± 0% -44.4% 136382 ± 0% sched_debug.cfs_rq:/.exec_clock.max 240090 ± 0% -48.8% 122991 ± 0% sched_debug.cfs_rq:/.exec_clock.min 1116 ± 9% +435.8% 5983 ± 0% sched_debug.cfs_rq:/.exec_clock.stddev 12350 ± 10% +2254.6% 290808 ± 9% sched_debug.cfs_rq:/.load.avg 80177 ± 80% +1634.2% 1390400 ± 22% sched_debug.cfs_rq:/.load.max 5380 ± 19% -100.0% 0.00 ± -1% sched_debug.cfs_rq:/.load.min 12011 ± 72% +3401.2% 420562 ± 10% sched_debug.cfs_rq:/.load.stddev 18.85 ± 21% +1747.5% 348.21 ± 3% sched_debug.cfs_rq:/.load_avg.avg 175.43 ± 14% +626.6% 1274 ± 9% sched_debug.cfs_rq:/.load_avg.max 5.07 ± 14% +501.5% 30.48 ± 9% sched_debug.cfs_rq:/.load_avg.min 33.38 ± 10% +787.0% 296.05 ± 6% sched_debug.cfs_rq:/.load_avg.stddev 5.82 ± 86% +7.5e+06% 433918 ± 21% sched_debug.cfs_rq:/.max_vruntime.avg 353.62 ± 73% +1.1e+06% 3889704 ± 2% sched_debug.cfs_rq:/.max_vruntime.max 43.10 ± 77% +2.7e+06% 1183052 ± 12% sched_debug.cfs_rq:/.max_vruntime.stddev 21470799 ± 0% -81.9% 3882202 ± 0% sched_debug.cfs_rq:/.min_vruntime.avg 21680860 ± 0% -81.5% 4000633 ± 0% sched_debug.cfs_rq:/.min_vruntime.max 21243753 ± 0% -82.2% 3771272 ± 0% sched_debug.cfs_rq:/.min_vruntime.min 91646 ± 5% -41.9% 53207 ± 7% sched_debug.cfs_rq:/.min_vruntime.stddev 1.03 ± 4% +84.3% 1.90 ± 7% sched_debug.cfs_rq:/.nr_running.max 0.47 ± 20% -100.0% 0.00 ± -1% sched_debug.cfs_rq:/.nr_running.min 0.17 ± 8% +210.4% 0.54 ± 6% sched_debug.cfs_rq:/.nr_running.stddev 1.67 ± 1% +283.5% 6.42 ± 0% sched_debug.cfs_rq:/.nr_spread_over.avg 2.41 ± 0% +25.7% 3.03 ± 3% sched_debug.cfs_rq:/.nr_spread_over.stddev 0.00 ±141% +2.9e+06% 11.02 ± 29% sched_debug.cfs_rq:/.removed_load_avg.avg 0.03 ±141% +1.3e+06% 432.19 ± 14% sched_debug.cfs_rq:/.removed_load_avg.max 0.00 ±141% +1.7e+06% 60.51 ± 19% sched_debug.cfs_rq:/.removed_load_avg.stddev 0.00 ±141% +2.7e+06% 10.17 ± 29% sched_debug.cfs_rq:/.removed_util_avg.avg 0.03 ±141% +1.2e+06% 408.62 ± 14% sched_debug.cfs_rq:/.removed_util_avg.max 0.00 ±141% +1.6e+06% 56.60 ± 19% sched_debug.cfs_rq:/.removed_util_avg.stddev 9.15 ± 2% +1211.4% 120.00 ± 9% sched_debug.cfs_rq:/.runnable_load_avg.avg 30.43 ± 9% +2319.7% 736.38 ± 9% sched_debug.cfs_rq:/.runnable_load_avg.max 4.47 ± 22% -100.0% 0.00 ± -1% sched_debug.cfs_rq:/.runnable_load_avg.min 4.26 ± 2% +4373.5% 190.39 ± 7% sched_debug.cfs_rq:/.runnable_load_avg.stddev -62769 ±-29% -249.1% 93587 ± 24% sched_debug.cfs_rq:/.spread0.avg 149462 ± 19% +41.8% 211876 ± 14% sched_debug.cfs_rq:/.spread0.max -291684 ±-11% -94.1% -17117 ±-87% sched_debug.cfs_rq:/.spread0.min 92632 ± 4% -42.7% 53106 ± 7% sched_debug.cfs_rq:/.spread0.stddev 812.83 ± 2% -18.5% 662.06 ± 3% sched_debug.cfs_rq:/.util_avg.avg 1008 ± 0% +48.2% 1494 ± 8% sched_debug.cfs_rq:/.util_avg.max 495.03 ± 14% -54.3% 226.14 ± 3% sched_debug.cfs_rq:/.util_avg.min 123.98 ± 17% +103.6% 252.44 ± 6% sched_debug.cfs_rq:/.util_avg.stddev 982698 ± 0% -57.2% 420240 ± 4% sched_debug.cpu.avg_idle.avg 726070 ± 4% -93.5% 47424 ± 46% sched_debug.cpu.avg_idle.min 54806 ± 17% +285.3% 211164 ± 7% sched_debug.cpu.avg_idle.stddev 313402 ± 0% -29.7% 220202 ± 2% sched_debug.cpu.clock.avg 313450 ± 0% -29.7% 220215 ± 2% sched_debug.cpu.clock.max 313351 ± 0% -29.7% 220187 ± 2% sched_debug.cpu.clock.min 28.21 ± 9% -72.9% 7.65 ± 10% sched_debug.cpu.clock.stddev 313402 ± 0% -29.7% 220202 ± 2% sched_debug.cpu.clock_task.avg 313450 ± 0% -29.7% 220215 ± 2% sched_debug.cpu.clock_task.max 313351 ± 0% -29.7% 220187 ± 2% sched_debug.cpu.clock_task.min 28.21 ± 9% -72.9% 7.65 ± 10% sched_debug.cpu.clock_task.stddev 9.14 ± 3% +938.7% 94.99 ± 11% sched_debug.cpu.cpu_load[0].avg 30.60 ± 10% +2355.2% 751.29 ± 5% sched_debug.cpu.cpu_load[0].max 4.47 ± 22% -100.0% 0.00 ± -1% sched_debug.cpu.cpu_load[0].min 4.27 ± 2% +3974.1% 174.13 ± 7% sched_debug.cpu.cpu_load[0].stddev 11.26 ± 19% +1493.3% 179.38 ± 0% sched_debug.cpu.cpu_load[1].avg 78.57 ± 43% +882.2% 771.71 ± 5% sched_debug.cpu.cpu_load[1].max 12.46 ± 51% +1510.5% 200.73 ± 4% sched_debug.cpu.cpu_load[1].stddev 10.72 ± 14% +1531.0% 174.82 ± 0% sched_debug.cpu.cpu_load[2].avg 65.97 ± 21% +939.0% 685.38 ± 6% sched_debug.cpu.cpu_load[2].max 4.50 ± 22% +37.6% 6.19 ± 21% sched_debug.cpu.cpu_load[2].min 10.00 ± 34% +1618.8% 171.82 ± 3% sched_debug.cpu.cpu_load[2].stddev 10.20 ± 10% +1571.8% 170.55 ± 0% sched_debug.cpu.cpu_load[3].avg 54.53 ± 1% +987.1% 592.81 ± 3% sched_debug.cpu.cpu_load[3].max 4.57 ± 20% +101.3% 9.19 ± 24% sched_debug.cpu.cpu_load[3].min 7.90 ± 21% +1707.9% 142.78 ± 3% sched_debug.cpu.cpu_load[3].stddev 9.78 ± 7% +1609.8% 167.16 ± 1% sched_debug.cpu.cpu_load[4].avg 41.93 ± 8% +1118.3% 510.86 ± 0% sched_debug.cpu.cpu_load[4].max 4.63 ± 20% +166.2% 12.33 ± 26% sched_debug.cpu.cpu_load[4].min 6.14 ± 15% +1765.6% 114.47 ± 3% sched_debug.cpu.cpu_load[4].stddev 18022 ± 3% -56.7% 7803 ± 10% sched_debug.cpu.curr->pid.avg 20735 ± 0% -13.0% 18049 ± 0% sched_debug.cpu.curr->pid.max 4933 ± 28% -100.0% 0.00 ± -1% sched_debug.cpu.curr->pid.min 3449 ± 3% +136.8% 8168 ± 3% sched_debug.cpu.curr->pid.stddev 12358 ± 10% +2281.6% 294330 ± 7% sched_debug.cpu.load.avg 80177 ± 80% +1695.8% 1439829 ± 24% sched_debug.cpu.load.max 5383 ± 19% -100.0% 0.00 ± -1% sched_debug.cpu.load.min 12027 ± 72% +3401.2% 421111 ± 10% sched_debug.cpu.load.stddev 254203 ± 0% -32.7% 171120 ± 0% sched_debug.cpu.nr_load_updates.avg 259100 ± 0% -30.5% 180126 ± 0% sched_debug.cpu.nr_load_updates.max 249692 ± 0% -34.7% 162940 ± 0% sched_debug.cpu.nr_load_updates.min 2423 ± 2% +160.1% 6304 ± 0% sched_debug.cpu.nr_load_updates.stddev 0.47 ± 20% -100.0% 0.00 ± -1% sched_debug.cpu.nr_running.min 0.42 ± 22% +42.6% 0.59 ± 10% sched_debug.cpu.nr_running.stddev 14938 ± 3% +3239.8% 498931 ± 0% sched_debug.cpu.nr_switches.avg 91655 ± 10% +499.6% 549576 ± 0% sched_debug.cpu.nr_switches.max 3516 ± 3% +12749.6% 451805 ± 0% sched_debug.cpu.nr_switches.min 17448 ± 8% +105.0% 35768 ± 0% sched_debug.cpu.nr_switches.stddev 0.00 ± 81% +43995.2% 0.50 ± 10% sched_debug.cpu.nr_uninterruptible.avg 6.50 ± 10% +38104.4% 2483 ± 1% sched_debug.cpu.nr_uninterruptible.max -19.30 ±-23% +12566.7% -2444 ± -2% sched_debug.cpu.nr_uninterruptible.min 3.80 ± 2% +57355.5% 2185 ± 0% sched_debug.cpu.nr_uninterruptible.stddev 15341 ± 4% +3155.1% 499372 ± 0% sched_debug.cpu.sched_count.avg 92611 ± 11% +537.2% 590150 ± 7% sched_debug.cpu.sched_count.max 3410 ± 5% +13156.9% 452059 ± 0% sched_debug.cpu.sched_count.min 18186 ± 9% +102.9% 36899 ± 5% sched_debug.cpu.sched_count.stddev 1499 ± 5% +12195.5% 184417 ± 0% sched_debug.cpu.sched_goidle.avg 6462 ± 3% +3101.8% 206908 ± 0% sched_debug.cpu.sched_goidle.max 462.57 ± 2% +34779.3% 161340 ± 0% sched_debug.cpu.sched_goidle.min 1063 ± 7% +1457.4% 16556 ± 0% sched_debug.cpu.sched_goidle.stddev 6820 ± 3% +3714.4% 260157 ± 0% sched_debug.cpu.ttwu_count.avg 44755 ± 11% +535.6% 284465 ± 0% sched_debug.cpu.ttwu_count.max 1365 ± 9% +17285.7% 237459 ± 0% sched_debug.cpu.ttwu_count.min 8587 ± 9% +105.9% 17678 ± 0% sched_debug.cpu.ttwu_count.stddev 4993 ± 4% +1002.1% 55032 ± 0% sched_debug.cpu.ttwu_local.avg 42198 ± 8% +41.4% 59677 ± 0% sched_debug.cpu.ttwu_local.max 713.23 ± 9% +6994.9% 50603 ± 0% sched_debug.cpu.ttwu_local.min 8336 ± 8% -67.6% 2699 ± 0% sched_debug.cpu.ttwu_local.stddev 313348 ± 0% -29.7% 220186 ± 2% sched_debug.cpu_clk 309751 ± 0% -29.9% 217158 ± 2% sched_debug.ktime 0.10 ± 0% +42.9% 0.14 ± 0% sched_debug.rt_rq:/.rt_nr_running.max 0.01 ± 16% +42.9% 0.02 ± 16% sched_debug.rt_rq:/.rt_nr_running.stddev 313348 ± 0% -29.7% 220186 ± 2% sched_debug.sched_clk *************************************************************************************************** lkp-hsw-ep2: 72 threads Brickland Haswell-EP with 128G memory ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/runtime/size/tbox_group/test/testcase: gcc-4.9/performance/x86_64-rhel/debian-x86_64-2015-02-07.cgz/300s/8T/lkp-hsw-ep2/anon-w-seq/vm-scalability commit: v4.7-rc7 8296d37010 ("Speeds up clearing huge pages using work queue") v4.7-rc7 8296d3701014cd804bf981b5e2 ---------------- -------------------------- fail:runs %reproduction fail:runs | | | %stddev %change %stddev \ | \ 0.03 ± 20% -70.6% 0.01 ± 2% vm-scalability.stddev 35657782 ± 0% +45.6% 51931484 ± 0% vm-scalability.throughput 572.79 ± 0% -31.1% 394.69 ± 0% vm-scalability.time.elapsed_time 572.79 ± 0% -31.1% 394.69 ± 0% vm-scalability.time.elapsed_time.max 328341 ± 0% +3328.2% 11256045 ± 0% vm-scalability.time.involuntary_context_switches 6719 ± 0% -59.6% 2715 ± 0% vm-scalability.time.percent_of_cpu_this_job_got 18939 ± 0% -84.7% 2897 ± 0% vm-scalability.time.system_time 19554 ± 0% -60.0% 7821 ± 0% vm-scalability.time.user_time 41413 ± 0% +26399.0% 10974014 ± 0% vm-scalability.time.voluntary_context_switches 3201 ± 70% +118.5% 6996 ± 29% numa-numastat.node1.numa_foreign 3201 ± 70% +118.5% 6996 ± 29% numa-numastat.node1.numa_miss 611.78 ± 0% -29.1% 433.60 ± 0% uptime.boot 5217 ± 0% +92.8% 10060 ± 0% uptime.idle 4266 ± 8% +4762.3% 207457 ± 0% vmstat.system.cs 73766 ± 0% +11.8% 82478 ± 0% vmstat.system.in 26142997 ± 0% +11.8% 29217123 ± 1% meminfo.AnonHugePages 16939 ± 0% +38.2% 23407 ± 0% meminfo.KernelStack 57079 ± 0% +10.9% 63312 ± 1% meminfo.PageTables 12857 ± 2% -22.5% 9965 ± 2% softirqs.NET_RX 3500329 ± 2% +59.3% 5576495 ± 0% softirqs.RCU 254266 ± 7% +1879.7% 5033646 ± 0% softirqs.SCHED 19643831 ± 0% -44.4% 10917987 ± 0% softirqs.TIMER 13096655 ± 0% +18.8% 15558240 ± 5% numa-meminfo.node0.AnonHugePages 10091 ± 1% +29.4% 13061 ± 2% numa-meminfo.node0.KernelStack 28546 ± 2% +16.4% 33229 ± 5% numa-meminfo.node0.PageTables 13486519 ± 0% +17.3% 15818216 ± 4% numa-meminfo.node1.AnonHugePages 6843 ± 2% +51.0% 10335 ± 3% numa-meminfo.node1.KernelStack 8600 ± 30% +22.9% 10566 ± 25% numa-meminfo.node1.Mapped 29398 ± 1% +16.8% 34329 ± 3% numa-meminfo.node1.PageTables 6390 ± 0% +18.2% 7551 ± 6% numa-vmstat.node0.nr_anon_transparent_hugepages 630.33 ± 1% +29.5% 816.00 ± 3% numa-vmstat.node0.nr_kernel_stack 7136 ± 1% +15.8% 8263 ± 6% numa-vmstat.node0.nr_page_table_pages 6625 ± 0% +16.0% 7683 ± 5% numa-vmstat.node1.nr_anon_transparent_hugepages 427.33 ± 2% +50.8% 644.33 ± 3% numa-vmstat.node1.nr_kernel_stack 2156 ± 30% +22.6% 2644 ± 25% numa-vmstat.node1.nr_mapped 7390 ± 2% +15.6% 8542 ± 5% numa-vmstat.node1.nr_page_table_pages 12871 ± 0% +11.3% 14329 ± 0% proc-vmstat.nr_anon_transparent_hugepages 1058 ± 0% +38.2% 1461 ± 0% proc-vmstat.nr_kernel_stack 19143 ± 0% -98.3% 317.00 ± 16% proc-vmstat.numa_hint_faults 15441 ± 1% -98.3% 260.67 ± 15% proc-vmstat.numa_hint_faults_local 6677608 ± 0% -100.0% 0.00 ± -1% proc-vmstat.numa_huge_pte_updates 3632 ± 3% -99.6% 13.00 ± 22% proc-vmstat.numa_pages_migrated 3.424e+09 ± 0% -100.0% 328.33 ± 15% proc-vmstat.numa_pte_updates 3632 ± 3% -99.6% 13.00 ± 22% proc-vmstat.pgmigrate_success 93.71 ± 0% -18.8% 76.04 ± 0% turbostat.%Busy 2617 ± 0% -18.8% 2124 ± 0% turbostat.Avg_MHz 3.36 ± 3% +540.7% 21.55 ± 0% turbostat.CPU%c1 0.02 ± 0% +3366.7% 0.69 ± 0% turbostat.CPU%c3 2.91 ± 4% -41.2% 1.71 ± 1% turbostat.CPU%c6 0.87 ± 9% -65.8% 0.30 ± 3% turbostat.Pkg%pc2 265.69 ± 0% +4.3% 277.20 ± 0% turbostat.PkgWatt 143.43 ± 0% -1.6% 141.08 ± 0% turbostat.RAMWatt 1337329 ± 16% +51788.7% 6.939e+08 ± 0% cpuidle.C1-HSW.time 87931 ± 23% +10151.1% 9013901 ± 0% cpuidle.C1-HSW.usage 5560533 ± 10% +12553.8% 7.036e+08 ± 0% cpuidle.C1E-HSW.time 19568 ± 7% +39448.8% 7738917 ± 0% cpuidle.C1E-HSW.usage 16491714 ± 1% +17911.8% 2.97e+09 ± 0% cpuidle.C3-HSW.time 49321 ± 1% +23837.4% 11806348 ± 0% cpuidle.C3-HSW.usage 2735962 ± 3% +82.5% 4992792 ± 0% cpuidle.C6-HSW.usage 3336982 ± 19% +299.4% 13327904 ± 1% cpuidle.POLL.time 1537 ± 17% +4546.0% 71408 ± 1% cpuidle.POLL.usage 0.00 ± -1% +Inf% 670539 ± 0% latency_stats.hits.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 1429117 ± 0% latency_stats.hits.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 8324214 ± 0% latency_stats.hits.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 742404 ± 14% -86.7% 98838 ± 0% latency_stats.hits.pipe_wait.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 41496 ± 6% latency_stats.max.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 15437 ± 13% -99.5% 77.00 ± 28% latency_stats.max.call_rwsem_down_write_failed.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.SyS_mmap_pgoff.SyS_mmap.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 43960 ± 2% latency_stats.max.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 13836 ± 4% latency_stats.max.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 1.464e+09 ± 0% latency_stats.sum.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 23344 ± 47% -98.1% 435.00 ± 6% latency_stats.sum.call_rwsem_down_write_failed.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.SyS_mmap_pgoff.SyS_mmap.entry_SYSCALL_64_fastpath 0.00 ± -1% +Inf% 2.931e+09 ± 0% latency_stats.sum.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 0.00 ± -1% +Inf% 5.531e+09 ± 0% latency_stats.sum.flush_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 21445 ± 3% -54.9% 9663 ± 0% slabinfo.kmalloc-256.active_objs 345.67 ± 3% -38.7% 212.00 ± 2% slabinfo.kmalloc-256.active_slabs 22132 ± 3% -38.6% 13593 ± 2% slabinfo.kmalloc-256.num_objs 345.67 ± 3% -38.7% 212.00 ± 2% slabinfo.kmalloc-256.num_slabs 35878 ± 0% +31.6% 47218 ± 3% slabinfo.kmalloc-32.active_objs 35879 ± 0% +31.6% 47218 ± 3% slabinfo.kmalloc-32.num_objs 14274 ± 2% +43.7% 20505 ± 3% slabinfo.kmalloc-512.active_objs 14469 ± 1% +42.6% 20629 ± 2% slabinfo.kmalloc-512.num_objs 4224 ± 0% +12.2% 4742 ± 0% slabinfo.sighand_cache.active_objs 4270 ± 0% +12.1% 4787 ± 0% slabinfo.sighand_cache.num_objs 1482 ± 0% +27.3% 1886 ± 0% slabinfo.task_struct.active_objs 501.67 ± 0% +27.2% 638.33 ± 0% slabinfo.task_struct.active_slabs 1505 ± 0% +27.3% 1916 ± 0% slabinfo.task_struct.num_objs 501.67 ± 0% +27.2% 638.33 ± 0% slabinfo.task_struct.num_slabs 5.721e+11 ± 0% +3.4% 5.915e+11 ± 0% perf-stat.L1-dcache-load-misses 6.767e+12 ± 0% +16.6% 7.89e+12 ± 0% perf-stat.L1-dcache-loads 2.898e+12 ± 0% +5.5% 3.058e+12 ± 0% perf-stat.L1-dcache-stores 8.939e+09 ± 0% +201.2% 2.692e+10 ± 0% perf-stat.L1-icache-load-misses 3.817e+09 ± 0% +101.6% 7.696e+09 ± 0% perf-stat.LLC-load-misses 1.332e+10 ± 0% +95.5% 2.604e+10 ± 0% perf-stat.LLC-loads 4.801e+10 ± 0% -37.7% 2.992e+10 ± 0% perf-stat.LLC-store-misses 1.863e+11 ± 0% -45.0% 1.025e+11 ± 0% perf-stat.LLC-stores 1.108e+13 ± 0% +9.6% 1.214e+13 ± 0% perf-stat.branch-instructions 8.546e+08 ± 0% +449.5% 4.696e+09 ± 0% perf-stat.branch-load-misses 1.112e+13 ± 0% +9.3% 1.216e+13 ± 0% perf-stat.branch-loads 8.867e+08 ± 2% +438.9% 4.778e+09 ± 0% perf-stat.branch-misses 3.797e+12 ± 0% -44.6% 2.102e+12 ± 0% perf-stat.bus-cycles 5.213e+10 ± 0% -27.0% 3.804e+10 ± 0% perf-stat.cache-misses 2.075e+11 ± 0% -27.0% 1.515e+11 ± 0% perf-stat.cache-references 2438791 ± 8% +3271.1% 82214290 ± 0% perf-stat.context-switches 1.063e+14 ± 0% -44.5% 5.894e+13 ± 0% perf-stat.cpu-cycles 109620 ± 0% +7027.7% 7813382 ± 0% perf-stat.cpu-migrations 3.539e+08 ± 12% +225.6% 1.152e+09 ± 24% perf-stat.dTLB-load-misses 6.759e+12 ± 0% +16.8% 7.898e+12 ± 0% perf-stat.dTLB-loads 1.316e+08 ± 4% +103.2% 2.673e+08 ± 20% perf-stat.dTLB-store-misses 2.895e+12 ± 0% +5.7% 3.06e+12 ± 0% perf-stat.dTLB-stores 1.294e+08 ± 1% +6.3% 1.375e+08 ± 0% perf-stat.iTLB-load-misses 47846677 ± 2% +971.0% 5.124e+08 ± 0% perf-stat.iTLB-loads 3.571e+13 ± 0% +10.9% 3.958e+13 ± 0% perf-stat.instructions 5.943e+08 ± 1% +386.3% 2.89e+09 ± 0% perf-stat.node-load-misses 3.221e+09 ± 0% +50.3% 4.84e+09 ± 0% perf-stat.node-loads 1.069e+08 ± 1% +1941.7% 2.182e+09 ± 0% perf-stat.node-store-misses 4.766e+10 ± 0% -41.7% 2.779e+10 ± 0% perf-stat.node-stores 8.724e+13 ± 0% -44.5% 4.842e+13 ± 0% perf-stat.ref-cycles 1.16 ± 1% -37.2% 0.73 ± 5% perf-profile.cycles-pp.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 0.00 ± -1% +Inf% 6.53 ± 4% perf-profile.cycles-pp.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 46.49 ± 1% -77.7% 10.39 ± 2% perf-profile.cycles-pp.__do_page_fault.do_page_fault.page_fault.do_unit 0.00 ± -1% +Inf% 2.27 ± 3% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 2.65 ± 4% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page 0.00 ± -1% +Inf% 1.49 ± 4% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 3.67 ± 1% perf-profile.cycles-pp.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn.process_one_work.worker_thread 1.17 ± 2% -37.6% 0.73 ± 4% perf-profile.cycles-pp.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 3.69 ± 4% perf-profile.cycles-pp.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 1.35 ± 24% +995.5% 14.75 ± 1% perf-profile.cycles-pp.call_cpuidle.cpu_startup_entry.start_secondary 1.81 ± 1% +465.3% 10.21 ± 0% perf-profile.cycles-pp.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 1.66 ± 1% perf-profile.cycles-pp.clear_mem.process_one_work.worker_thread.kthread.ret_from_fork 44.34 ± 1% -100.0% 0.00 ± -1% perf-profile.cycles-pp.clear_page_c_e.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault 0.00 ± -1% +Inf% 34.13 ± 1% perf-profile.cycles-pp.clear_page_c_e.process_one_work.worker_thread.kthread.ret_from_fork 1.36 ± 24% +1028.4% 15.35 ± 1% perf-profile.cycles-pp.cpu_startup_entry.start_secondary 1.35 ± 24% +995.5% 14.75 ± 1% perf-profile.cycles-pp.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 1.32 ± 24% +1010.6% 14.66 ± 1% perf-profile.cycles-pp.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry.start_secondary 0.00 ± -1% +Inf% 2.23 ± 3% perf-profile.cycles-pp.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault 48.10 ± 1% -76.7% 11.19 ± 0% perf-profile.cycles-pp.do_huge_pmd_anonymous_page.handle_mm_fault.__do_page_fault.do_page_fault.page_fault 46.49 ± 1% -77.7% 10.39 ± 2% perf-profile.cycles-pp.do_page_fault.page_fault.do_unit 95.56 ± 1% -57.5% 40.57 ± 2% perf-profile.cycles-pp.do_unit 1.14 ± 2% -37.1% 0.72 ± 5% perf-profile.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.alloc_pages_vma.do_huge_pmd_anonymous_page.handle_mm_fault 46.37 ± 1% -77.8% 10.31 ± 3% perf-profile.cycles-pp.handle_mm_fault.__do_page_fault.do_page_fault.page_fault.do_unit 1.31 ± 23% +1010.7% 14.59 ± 1% perf-profile.cycles-pp.intel_idle.cpuidle_enter_state.cpuidle_enter.call_cpuidle.cpu_startup_entry 0.00 ± -1% +Inf% 41.80 ± 1% perf-profile.cycles-pp.kthread.ret_from_fork 0.00 ± -1% +Inf% 2.28 ± 3% perf-profile.cycles-pp.mutex_lock.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 0.00 ± -1% +Inf% 2.66 ± 4% perf-profile.cycles-pp.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key.clear_huge_page.do_huge_pmd_anonymous_page 0.00 ± -1% +Inf% 1.50 ± 4% perf-profile.cycles-pp.mutex_lock.destroy_workqueue.clear_huge_page.do_huge_pmd_anonymous_page.handle_mm_fault 0.00 ± -1% +Inf% 3.68 ± 1% perf-profile.cycles-pp.mutex_lock.pwq_unbound_release_workfn.process_one_work.worker_thread.kthread 0.00 ± -1% +Inf% 2.26 ± 3% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key.clear_huge_page 0.00 ± -1% +Inf% 2.64 ± 4% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs.__alloc_workqueue_key 0.00 ± -1% +Inf% 1.46 ± 4% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.destroy_workqueue.clear_huge_page 0.00 ± -1% +Inf% 3.66 ± 1% perf-profile.cycles-pp.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn.process_one_work 0.00 ± -1% +Inf% 2.01 ± 3% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.__alloc_workqueue_key 0.00 ± -1% +Inf% 2.39 ± 4% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.apply_workqueue_attrs 0.00 ± -1% +Inf% 1.33 ± 4% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.destroy_workqueue 0.00 ± -1% +Inf% 3.39 ± 2% perf-profile.cycles-pp.osq_lock.mutex_optimistic_spin.__mutex_lock_slowpath.mutex_lock.pwq_unbound_release_workfn 46.49 ± 1% -77.6% 10.39 ± 2% perf-profile.cycles-pp.page_fault.do_unit 0.00 ± -1% +Inf% 41.07 ± 1% perf-profile.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork 0.00 ± -1% +Inf% 3.75 ± 1% perf-profile.cycles-pp.pwq_unbound_release_workfn.process_one_work.worker_thread.kthread.ret_from_fork 0.00 ± -1% +Inf% 41.80 ± 1% perf-profile.cycles-pp.ret_from_fork 1.36 ± 24% +1029.9% 15.37 ± 1% perf-profile.cycles-pp.start_secondary 0.00 ± -1% +Inf% 41.62 ± 1% perf-profile.cycles-pp.worker_thread.kthread.ret_from_fork 22409 ±141% +1919.1% 452462 ± 10% sched_debug.cfs_rq:/.MIN_vruntime.avg 808103 ±141% +328.0% 3458796 ± 0% sched_debug.cfs_rq:/.MIN_vruntime.max 132594 ±141% +756.8% 1136087 ± 4% sched_debug.cfs_rq:/.MIN_vruntime.stddev 252239 ± 0% -46.8% 134197 ± 0% sched_debug.cfs_rq:/.exec_clock.avg 253927 ± 0% -44.9% 139915 ± 0% sched_debug.cfs_rq:/.exec_clock.max 250010 ± 0% -48.4% 128892 ± 0% sched_debug.cfs_rq:/.exec_clock.min 805.28 ± 11% +476.1% 4639 ± 0% sched_debug.cfs_rq:/.exec_clock.stddev 14443 ± 5% +2332.1% 351292 ± 2% sched_debug.cfs_rq:/.load.avg 64695 ± 73% +2781.4% 1864129 ± 16% sched_debug.cfs_rq:/.load.max 10818 ± 16% -100.0% 0.00 ± -1% sched_debug.cfs_rq:/.load.min 8247 ± 76% +5737.8% 481497 ± 4% sched_debug.cfs_rq:/.load.stddev 21.17 ± 7% +1806.2% 403.63 ± 1% sched_debug.cfs_rq:/.load_avg.avg 318.43 ± 40% +325.9% 1356 ± 2% sched_debug.cfs_rq:/.load_avg.max 10.13 ± 9% +225.2% 32.95 ± 9% sched_debug.cfs_rq:/.load_avg.min 44.45 ± 36% +660.6% 338.08 ± 0% sched_debug.cfs_rq:/.load_avg.stddev 22409 ±141% +1919.1% 452462 ± 10% sched_debug.cfs_rq:/.max_vruntime.avg 808103 ±141% +328.0% 3458798 ± 0% sched_debug.cfs_rq:/.max_vruntime.max 132594 ±141% +756.8% 1136087 ± 4% sched_debug.cfs_rq:/.max_vruntime.stddev 18128511 ± 0% -81.2% 3407497 ± 0% sched_debug.cfs_rq:/.min_vruntime.avg 18245060 ± 0% -80.8% 3498104 ± 0% sched_debug.cfs_rq:/.min_vruntime.max 17989949 ± 0% -81.8% 3275951 ± 0% sched_debug.cfs_rq:/.min_vruntime.min 0.90 ± 2% -11.6% 0.79 ± 0% sched_debug.cfs_rq:/.nr_running.avg 1.03 ± 4% +148.8% 2.57 ± 12% sched_debug.cfs_rq:/.nr_running.max 0.77 ± 16% -100.0% 0.00 ± -1% sched_debug.cfs_rq:/.nr_running.min 0.09 ± 51% +596.9% 0.60 ± 7% sched_debug.cfs_rq:/.nr_running.stddev 1.75 ± 4% +332.2% 7.55 ± 1% sched_debug.cfs_rq:/.nr_spread_over.avg 13.73 ± 8% +19.6% 16.43 ± 6% sched_debug.cfs_rq:/.nr_spread_over.max 2.31 ± 2% +37.5% 3.18 ± 4% sched_debug.cfs_rq:/.nr_spread_over.stddev 12.22 ± 0% +1198.9% 158.75 ± 6% sched_debug.cfs_rq:/.runnable_load_avg.avg 28.70 ± 5% +2520.7% 752.14 ± 11% sched_debug.cfs_rq:/.runnable_load_avg.max 9.30 ± 15% -99.5% 0.05 ±141% sched_debug.cfs_rq:/.runnable_load_avg.min 3.04 ± 23% +7174.2% 221.37 ± 5% sched_debug.cfs_rq:/.runnable_load_avg.stddev 7245 ±214% +1622.3% 124785 ± 17% sched_debug.cfs_rq:/.spread0.avg 123472 ± 17% +74.3% 215249 ± 9% sched_debug.cfs_rq:/.spread0.max -132172 ±-31% -95.1% -6489 ±-60% sched_debug.cfs_rq:/.spread0.min 892.46 ± 2% -20.6% 708.40 ± 0% sched_debug.cfs_rq:/.util_avg.avg 1010 ± 0% +57.8% 1594 ± 2% sched_debug.cfs_rq:/.util_avg.max 767.80 ± 13% -70.1% 229.67 ± 11% sched_debug.cfs_rq:/.util_avg.min 59.95 ± 57% +387.2% 292.03 ± 3% sched_debug.cfs_rq:/.util_avg.stddev 971616 ± 0% -59.2% 396870 ± 3% sched_debug.cpu.avg_idle.avg 1000000 ± 0% -11.3% 886566 ± 4% sched_debug.cpu.avg_idle.max 744054 ± 17% -93.5% 48437 ± 25% sched_debug.cpu.avg_idle.min 47455 ± 27% +302.2% 190868 ± 7% sched_debug.cpu.avg_idle.stddev 311238 ± 0% -29.1% 220771 ± 0% sched_debug.cpu.clock.avg 311271 ± 0% -29.1% 220783 ± 0% sched_debug.cpu.clock.max 311199 ± 0% -29.1% 220758 ± 0% sched_debug.cpu.clock.min 21.85 ± 23% -66.2% 7.39 ± 6% sched_debug.cpu.clock.stddev 311238 ± 0% -29.1% 220771 ± 0% sched_debug.cpu.clock_task.avg 311271 ± 0% -29.1% 220783 ± 0% sched_debug.cpu.clock_task.max 311199 ± 0% -29.1% 220758 ± 0% sched_debug.cpu.clock_task.min 21.85 ± 23% -66.2% 7.39 ± 6% sched_debug.cpu.clock_task.stddev 12.23 ± 0% +1045.2% 140.11 ± 3% sched_debug.cpu.cpu_load[0].avg 28.70 ± 5% +2496.2% 745.10 ± 0% sched_debug.cpu.cpu_load[0].max 9.30 ± 15% -99.5% 0.05 ±141% sched_debug.cpu.cpu_load[0].min 3.10 ± 22% +6762.8% 213.04 ± 1% sched_debug.cpu.cpu_load[0].stddev 13.05 ± 3% +1522.6% 211.82 ± 4% sched_debug.cpu.cpu_load[1].avg 58.90 ± 32% +1245.6% 792.57 ± 4% sched_debug.cpu.cpu_load[1].max 9.30 ± 15% -46.7% 4.95 ± 15% sched_debug.cpu.cpu_load[1].min 7.37 ± 38% +2765.4% 211.08 ± 3% sched_debug.cpu.cpu_load[1].stddev 12.87 ± 1% +1527.9% 209.56 ± 2% sched_debug.cpu.cpu_load[2].avg 50.80 ± 8% +1255.4% 688.52 ± 2% sched_debug.cpu.cpu_load[2].max 9.33 ± 15% -19.4% 7.52 ± 3% sched_debug.cpu.cpu_load[2].min 5.98 ± 1% +2866.4% 177.52 ± 2% sched_debug.cpu.cpu_load[2].stddev 12.79 ± 1% +1523.4% 207.56 ± 2% sched_debug.cpu.cpu_load[3].avg 45.87 ± 27% +1177.3% 585.86 ± 3% sched_debug.cpu.cpu_load[3].max 9.47 ± 15% +24.2% 11.76 ± 4% sched_debug.cpu.cpu_load[3].min 5.39 ± 21% +2590.3% 145.12 ± 0% sched_debug.cpu.cpu_load[3].stddev 12.63 ± 1% +1523.4% 205.07 ± 1% sched_debug.cpu.cpu_load[4].avg 40.67 ± 28% +1172.2% 517.38 ± 0% sched_debug.cpu.cpu_load[4].max 9.47 ± 15% +113.8% 20.24 ± 11% sched_debug.cpu.cpu_load[4].min 4.63 ± 27% +2401.7% 115.79 ± 1% sched_debug.cpu.cpu_load[4].stddev 17502 ± 1% -60.3% 6947 ± 2% sched_debug.cpu.curr->pid.avg 18194 ± 0% -11.1% 16177 ± 0% sched_debug.cpu.curr->pid.max 3163 ± 72% -100.0% 0.00 ± -1% sched_debug.cpu.curr->pid.min 2226 ± 27% +230.5% 7360 ± 1% sched_debug.cpu.curr->pid.stddev 15383 ± 0% +2134.6% 343744 ± 5% sched_debug.cpu.load.avg 132690 ± 1% +1116.8% 1614549 ± 11% sched_debug.cpu.load.max 10818 ± 16% -100.0% 0.00 ± -1% sched_debug.cpu.load.min 15898 ± 5% +2824.4% 464941 ± 3% sched_debug.cpu.load.stddev 500000 ± 0% +21.9% 609488 ± 4% sched_debug.cpu.max_idle_balance_cost.max 261592 ± 0% -33.6% 173665 ± 0% sched_debug.cpu.nr_load_updates.avg 265792 ± 0% -31.9% 181000 ± 0% sched_debug.cpu.nr_load_updates.max 257853 ± 0% -35.0% 167567 ± 0% sched_debug.cpu.nr_load_updates.min 1923 ± 3% +144.5% 4701 ± 0% sched_debug.cpu.nr_load_updates.stddev 0.93 ± 3% -11.5% 0.82 ± 1% sched_debug.cpu.nr_running.avg 1.93 ± 8% +40.4% 2.71 ± 8% sched_debug.cpu.nr_running.max 0.77 ± 16% -100.0% 0.00 ± -1% sched_debug.cpu.nr_running.min 0.24 ± 8% +172.1% 0.65 ± 7% sched_debug.cpu.nr_running.stddev 16572 ± 6% +3037.0% 519887 ± 0% sched_debug.cpu.nr_switches.avg 80913 ± 9% +597.0% 563953 ± 0% sched_debug.cpu.nr_switches.max 3507 ± 0% +13837.1% 488782 ± 0% sched_debug.cpu.nr_switches.min 16011 ± 9% +24.1% 19876 ± 2% sched_debug.cpu.nr_switches.stddev -0.00 ±-141% -1e+05% 0.47 ± 1% sched_debug.cpu.nr_uninterruptible.avg 13.77 ± 26% +30608.8% 4227 ± 0% sched_debug.cpu.nr_uninterruptible.max -12.77 ± -4% +32511.3% -4163 ± 0% sched_debug.cpu.nr_uninterruptible.min 4.76 ± 11% +80376.7% 3832 ± 0% sched_debug.cpu.nr_uninterruptible.stddev 16778 ± 6% +2999.5% 520032 ± 0% sched_debug.cpu.sched_count.avg 80047 ± 9% +615.6% 572844 ± 1% sched_debug.cpu.sched_count.max 3396 ± 0% +14289.2% 488771 ± 0% sched_debug.cpu.sched_count.min 16232 ± 9% +25.7% 20407 ± 2% sched_debug.cpu.sched_count.stddev 1645 ± 12% +10331.5% 171604 ± 0% sched_debug.cpu.sched_goidle.avg 9799 ± 13% +1875.0% 193536 ± 0% sched_debug.cpu.sched_goidle.max 369.83 ± 3% +41879.6% 155254 ± 0% sched_debug.cpu.sched_goidle.min 1796 ± 21% +477.6% 10377 ± 0% sched_debug.cpu.sched_goidle.stddev 7732 ± 7% +3459.5% 275252 ± 0% sched_debug.cpu.ttwu_count.avg 38526 ± 8% +699.8% 308129 ± 1% sched_debug.cpu.ttwu_count.max 1447 ± 0% +17406.9% 253482 ± 0% sched_debug.cpu.ttwu_count.min 7835 ± 9% +99.2% 15610 ± 3% sched_debug.cpu.ttwu_count.stddev 5418 ± 14% +1227.9% 71951 ± 0% sched_debug.cpu.ttwu_local.avg 35944 ± 10% +112.8% 76482 ± 0% sched_debug.cpu.ttwu_local.max 796.37 ± 4% +8288.8% 66805 ± 0% sched_debug.cpu.ttwu_local.min 7076 ± 12% -57.4% 3016 ± 0% sched_debug.cpu.ttwu_local.stddev 311196 ± 0% -29.1% 220757 ± 0% sched_debug.cpu_clk 308421 ± 0% -29.3% 217995 ± 0% sched_debug.ktime 0.10 ± 0% +42.9% 0.14 ± 0% sched_debug.rt_rq:/.rt_nr_running.max 0.01 ± 15% +54.2% 0.02 ± 21% sched_debug.rt_rq:/.rt_nr_running.stddev 0.75 ± 41% +64.9% 1.23 ± 23% sched_debug.rt_rq:/.rt_time.max 311196 ± 0% -29.1% 220757 ± 0% sched_debug.sched_clk Thanks, Xiaolong

5 years, 6 months

3
11
0 / 0

[lkp] [BUG] 48d381633b: WARNING: CPU: 0 PID: 950 at lib/debugobjects.c:263 debug_print_object+0x7d/0x90

by kernel test robot

FYI, we noticed the following commit: git://bee.sh.intel.com/git/wfg/linux-devel.git fix-e100e-netpoll-nick commit 48d381633b581bcf7be0a6e297ed65ae280690ec ("BUG: sleeping function called from invalid context at kernel/irq/manage.c:110") in testcase: boot on test machine: 1 threads qemu-system-i386 -enable-kvm with 192M memory caused below changes: +------------------------------------------------------------+------+------------+ | | v4.7 | 48d381633b | +------------------------------------------------------------+------+------------+ | boot_successes | 0 | 0 | | boot_failures | 73 | 10 | | genirq:Flags_mismatch_irq##(serial)vs.#(goldfish_pdev_bus) | 73 | 10 | | invoked_oom-killer:gfp_mask=0x | 1 | | | Mem-Info | 1 | | | backtrace:SyS_clone+0x | 1 | | | backtrace:do_sys_open+0x | 2 | | | backtrace:SyS_open+0x | 2 | | | backtrace:vfs_stat+0x | 1 | | | backtrace:SyS_stat64+0x | 1 | | | IP-Config:Auto-configuration_of_network_failed | 2 | | | genirq:Flags_mismatch_irq##(serial)vs | 3 | | | genirq:Flags_mismatch_irq##(serial)vs.#(goldfish_pdev_bu | 1 | | | genirq:Flags_mismatch_irq | 2 | | | genirq:Flags_mismatch_irq##(seri | 1 | | | genirq:Flags_mismatch_irq##(serial)vs.#(goldfi | 1 | | | genirq:Flags_mismatch_irq##(serial) | 2 | | | genirq:Flags_mismatch_irq##(se | 1 | | | genirq:Flags_mismatch_irq##(serial)vs.#(gold | 1 | | | WARNING:at_lib/debugobjects.c:#debug_print_object | 0 | 8 | | BUG:unable_to_handle_kernel | 0 | 8 | | Oops | 0 | 8 | | EIP_is_at_detach_if_pending | 0 | 8 | | Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 8 | +------------------------------------------------------------+------+------------+ [ 22.906262] BIOS EDD facility v0.16 2004-Jun-25, 2 devices found [ 22.908684] PM: Hibernation image not present or could not be loaded. [ 22.908684] PM: Hibernation image not present or could not be loaded. [ 22.911189] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 22.911189] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 22.913531] debug: unmapping init [mem 0xb269e000-0xb275afff] [ 22.913531] debug: unmapping init [mem 0xb269e000-0xb275afff] [ 22.915620] Write protecting the kernel text: 15776k [ 22.915620] Write protecting the kernel text: 15776k [ 22.917207] Write protecting the kernel read-only data: 6080k [ 22.917207] Write protecting the kernel read-only data: 6080k [ 22.975948] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 22.975948] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 22.994162] random: mktemp urandom read with 14 bits of entropy available [ 22.994162] random: mktemp urandom read with 14 bits of entropy available [ 26.941972] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 26.941972] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 27.485632] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 27.485632] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 27.990029] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 27.990029] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 28.495632] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 28.495632] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus) [ 28.853460] ------------[ cut here ]------------ [ 28.853460] ------------[ cut here ]------------ [ 28.854581] WARNING: CPU: 0 PID: 950 at lib/debugobjects.c:263 debug_print_object+0x7d/0x90 [ 28.854581] WARNING: CPU: 0 PID: 950 at lib/debugobjects.c:263 debug_print_object+0x7d/0x90 [ 28.856736] ODEBUG: deactivate not available (active state 0) object type: timer_list hint: e1000_watchdog+0x0/0x51a [ 28.856736] ODEBUG: deactivate not available (active state 0) object type: timer_list hint: e1000_watchdog+0x0/0x51a [ 28.858899] CPU: 0 PID: 950 Comm: netifd Tainted: G S 4.7.0-00001-g48d3816 #1 [ 28.858899] CPU: 0 PID: 950 Comm: netifd Tainted: G S 4.7.0-00001-g48d3816 #1 [ 28.860593] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 28.860593] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 28.862388] b0091ef0 [ 28.862388] b0091ef0 b0091ef0 b0091ef0 b0091eac b0091eac b137128e b137128e b0091edc b0091edc b1041707 b1041707 b23c221c b23c221c b0091f0c b0091f0c [ 28.864209] 000003b6 [ 28.864209] 000003b6 b23c225c b23c225c 00000107 00000107 b138adcd b138adcd 00000107 00000107 b0091f3c b0091f3c b2579700 b2579700 b2387d49 b2387d49 [ 28.866108] b0091ef8 [ 28.866108] b0091ef8 b1041755 b1041755 00000009 00000009 00000000 00000000 b0091ef0 b0091ef0 b23c221c b23c221c b0091f0c b0091f0c b0091f2c b0091f2c [ 28.868031] Call Trace: [ 28.868031] Call Trace: [ 28.868582] [<b137128e>] dump_stack+0x16/0x18 [ 28.868582] [<b137128e>] dump_stack+0x16/0x18 [ 28.869536] [<b1041707>] __warn+0xc3/0xdb [ 28.869536] [<b1041707>] __warn+0xc3/0xdb [ 28.870453] [<b138adcd>] ? debug_print_object+0x7d/0x90 [ 28.870453] [<b138adcd>] ? debug_print_object+0x7d/0x90 [ 28.871636] [<b1041755>] warn_slowpath_fmt+0x36/0x38 [ 28.871636] [<b1041755>] warn_slowpath_fmt+0x36/0x38 [ 28.872828] [<b138adcd>] debug_print_object+0x7d/0x90 [ 28.872828] [<b138adcd>] debug_print_object+0x7d/0x90 [ 28.874057] [<b199bdb3>] ? e1000_update_stats+0x7dc/0x7dc [ 28.874057] [<b199bdb3>] ? e1000_update_stats+0x7dc/0x7dc [ 28.875392] [<b138b4f9>] debug_object_deactivate+0xc4/0xc6 [ 28.875392] [<b138b4f9>] debug_object_deactivate+0xc4/0xc6 [ 28.876779] [<b1086796>] detach_if_pending+0x1f/0x81 [ 28.876779] [<b1086796>] detach_if_pending+0x1f/0x81 [ 28.878019] [<b1087006>] mod_timer+0x57/0x102 [ 28.878019] [<b1087006>] mod_timer+0x57/0x102 [ 28.879151] [<b19966ed>] e1000_intr+0xf7/0xfc [ 28.879151] [<b19966ed>] e1000_intr+0xf7/0xfc [ 28.880267] [<b107d2ad>] handle_irq_event_percpu+0x58/0x10f [ 28.880267] [<b107d2ad>] handle_irq_event_percpu+0x58/0x10f [ 28.881665] [<b107f5e7>] ? handle_fasteoi_irq+0x15/0x115 [ 28.881665] [<b107f5e7>] ? handle_fasteoi_irq+0x15/0x115 [ 28.883017] [<b107d386>] ? handle_irq_event+0x22/0x4c [ 28.883017] [<b107d386>] ? handle_irq_event+0x22/0x4c [ 28.884298] [<b107d38d>] handle_irq_event+0x29/0x4c [ 28.884298] [<b107d38d>] handle_irq_event+0x29/0x4c [ 28.885430] [<b107f642>] handle_fasteoi_irq+0x70/0x115 [ 28.885430] [<b107f642>] handle_fasteoi_irq+0x70/0x115 [ 28.886678] [<b107f5d2>] ? handle_level_irq+0xd1/0xd1 [ 28.886678] [<b107f5d2>] ? handle_level_irq+0xd1/0xd1 [ 28.887897] [<b1015912>] handle_irq+0x3e/0x5c [ 28.887897] [<b1015912>] handle_irq+0x3e/0x5c [ 28.888914] <IRQ> [ 28.888914] <IRQ> [<b1015649>] do_IRQ+0x48/0xfd [<b1015649>] do_IRQ+0x48/0xfd [ 28.890018] [<b1f665ae>] common_interrupt+0x2e/0x34 [ 28.890018] [<b1f665ae>] common_interrupt+0x2e/0x34 [ 28.891109] [<b199007b>] ? grcan_store_select+0x23/0x50 [ 28.891109] [<b199007b>] ? grcan_store_select+0x23/0x50 [ 28.892291] [<b199d119>] ? e1000_open+0xaf/0x10c [ 28.892291] [<b199d119>] ? e1000_open+0xaf/0x10c [ 28.893334] [<b1e46da3>] __dev_open+0x78/0xdc [ 28.893334] [<b1e46da3>] __dev_open+0x78/0xdc [ 28.894316] [<b1f65766>] ? _raw_spin_unlock_bh+0x2a/0x2d [ 28.894316] [<b1f65766>] ? _raw_spin_unlock_bh+0x2a/0x2d [ 28.895500] [<b1e47013>] __dev_change_flags+0x89/0x139 [ 28.895500] [<b1e47013>] __dev_change_flags+0x89/0x139 [ 28.896673] [<b1e5707b>] ? rtnl_lock+0xf/0x11 [ 28.896673] [<b1e5707b>] ? rtnl_lock+0xf/0x11 [ 28.897666] [<b1e470e6>] dev_change_flags+0x23/0x54 [ 28.897666] [<b1e470e6>] dev_change_flags+0x23/0x54 [ 28.898725] [<b1e5e00b>] dev_ifsioc+0x1eb/0x2cd [ 28.898725] [<b1e5e00b>] dev_ifsioc+0x1eb/0x2cd [ 28.899746] [<b1e5e2d4>] dev_ioctl+0xc8/0x5a4 [ 28.899746] [<b1e5e2d4>] dev_ioctl+0xc8/0x5a4 [ 28.900777] [<b1e5e39d>] ? dev_ioctl+0x191/0x5a4 [ 28.900777] [<b1e5e39d>] ? dev_ioctl+0x191/0x5a4 [ 28.901824] [<b1e2d0a1>] sock_ioctl+0x11f/0x1e8 [ 28.901824] [<b1e2d0a1>] sock_ioctl+0x11f/0x1e8 [ 28.902825] [<b1e2cf82>] ? init_once+0xd/0xd [ 28.902825] [<b1e2cf82>] ? init_once+0xd/0xd [ 28.903770] [<b111b580>] do_vfs_ioctl+0x7d/0x729 [ 28.903770] [<b111b580>] do_vfs_ioctl+0x7d/0x729 [ 28.904794] [<b10fd483>] ? slob_free_pages+0x2b/0x2f [ 28.904794] [<b10fd483>] ? slob_free_pages+0x2b/0x2f [ 28.905923] [<b10fd900>] ? __kmem_cache_free+0x25/0x30 FYI, raw QEMU command line is: qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-c0-07282000/gcc-4.9/48d381633b581bcf7be0a6e297ed65ae280690ec/vmlinuz-4.7.0-00001-g48d3816 -append 'ip=::::vm-intel12-openwrt-i386-2::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-intel12-openwrt-i386-2/boot-1-openwrt-i386.cgz-48d381633b581bcf7be0a6e297ed65ae280690ec-20160728-14825-1qsf38g-0.yaml ARCH=i386 kconfig=i386-randconfig-c0-07282000 branch=linux-devel/devel-spot-201607281924 commit=48d381633b581bcf7be0a6e297ed65ae280690ec BOOT_IMAGE=/pkg/linux/i386-randconfig-c0-07282000/gcc-4.9/48d381633b581bcf7be0a6e297ed65ae280690ec/vmlinuz-4.7.0-00001-g48d3816 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-intel12-openwrt-i386/openwrt-i386.cgz/i386-randconfig-c0-07282000/gcc-4.9/48d381633b581bcf7be0a6e297ed65ae280690ec/0 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw drbd.minor_count=8' -initrd /fs/KVM/initrd-vm-intel12-openwrt-i386-2 -m 192 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -watchdog-action debug -rtc base=localtime -drive file=/fs/KVM/disk0-vm-intel12-openwrt-i386-2,media=disk,if=virtio -drive file=/fs/KVM/disk1-vm-intel12-openwrt-i386-2,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-intel12-openwrt-i386-2 -serial file:/dev/shm/kboot/serial-vm-intel12-openwrt-i386-2 -daemonize -display none -monitor null Thanks, Xiaolong

5 years, 6 months

1
0
0 / 0

[lkp] [x86/stacktrace] 7be83135e2: BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1

by kernel test robot

FYI, we noticed the following commit: https://github.com/jpoimboe/linux unwind-2016-07-25 commit 7be83135e2b166469de43f165e2a08c6b36f5da8 ("x86/stacktrace: convert save_stack_trace_*() to the new unwinder") in testcase: boot on test machine: 2 threads qemu-system-x86_64 -enable-kvm with 360M memory caused below changes: +-------------------------------------------------------------------+------------+------------+ | | 12b0afa7c8 | 7be83135e2 | +-------------------------------------------------------------------+------------+------------+ | boot_successes | 87 | 0 | | boot_failures | 3 | 90 | | BUG:kernel_torture_test_oversize | 2 | | | BUG:kernel_test_crashed | 1 | | | BUG:using_smp_processor_id()in_preemptible[#]code:swapper | 0 | 90 | | BUG:using_smp_processor_id()in_preemptible[#]code:init | 0 | 16 | | BUG:using_smp_processor_id()in_preemptible[#]code:systemd | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:systemd-journal | 0 | 2 | | BUG:using_smp_processor_id()in_preemptible[#]code:rc | 0 | 12 | | BUG:using_smp_processor_id()in_preemptible[#]code:udevd | 0 | 27 | | BUG:using_smp_processor_id()in_preemptible[#]code:udevadm | 0 | 7 | | BUG:using_smp_processor_id()in_preemptible[#]code:sh | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:S07bootlogd | 0 | 1 | | BUG:using_smp_pro | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:sed | 0 | 5 | | BUG:using_smp_processor_id()in_preemptible[#]code:touch | 0 | 2 | | BUG:using_smp_processor_id()in_preemptible[#]code:chown | 0 | 2 | | BUG:using_smp_proc | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:rm | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:start-stop-daem | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:id | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:S03udev | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:hwclock | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:lock_torture_st | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:ln | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:grep | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:basename | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:ls | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:input_id | 0 | 1 | | BUG:using_smp_processor_id()in_preemptible[#]code:trinity | 0 | 1 | +-------------------------------------------------------------------+------------+------------+ [ 7.944152] debug: unmapping init [mem 0xffff880001a74000-0xffff880001bfffff] [ 7.944891] debug: unmapping init [mem 0xffff8800021a2000-0xffff8800021fffff] [ 25.551987] x86/mm: Checked W+X mappings: passed, no W+X pages found. [ 25.554473] BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1 [ 25.555217] caller is debug_smp_processor_id+0x17/0x19 [ 25.555698] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.7.0-01746-g7be8313 #1 [ 25.556361] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 25.557211] ffff880010b27a78 ffffffff813ff796 ffff880010b27a48 ffffffff8140878a [ 25.557327] 0000000000000001 0000000000000001 ffffffff820d2487 ffffffff820e88d3 [ 25.557327] ffff880010aac000 0000000000016060 ffff880010b27aa8 ffffffff8142a844 [ 25.557327] Call Trace: [ 25.557327] [<ffffffff813ff796>] dump_stack+0x10c/0x181 [ 25.557327] [<ffffffff8140878a>] ? ___ratelimit+0x196/0x1a2 [ 25.557327] [<ffffffff8142a844>] check_preemption_disabled+0x172/0x184 [ 25.557327] [<ffffffff8142a882>] debug_smp_processor_id+0x17/0x19 [ 25.557327] [<ffffffff8100ef30>] get_stack_info+0xa2/0x212 [ 25.557327] [<ffffffff8103a0d9>] unwind_next_frame+0x8d/0x120 [ 25.557327] [<ffffffff81021538>] __save_stack_trace+0x137/0x17b [ 25.557327] [<ffffffff811043be>] ? __might_sleep+0xd2/0xdf [ 25.557327] [<ffffffff810215ca>] save_stack_trace+0x14/0x16 [ 25.557327] [<ffffffff8129608b>] kasan_kmalloc+0xe3/0x168 [ 25.557327] [<ffffffff810215ca>] ? save_stack_trace+0x14/0x16 [ 25.557327] [<ffffffff8129608b>] ? kasan_kmalloc+0xe3/0x168 [ 25.557327] [<ffffffff812961b5>] ? kasan_slab_alloc+0xf/0x11 FYI, raw QEMU command line is: qemu-system-x86_64 -enable-kvm -kernel /pkg/linux/x86_64-randconfig-s2-07280741/gcc-4.4/7be83135e2b166469de43f165e2a08c6b36f5da8/vmlinuz-4.7.0-01746-g7be8313 -append 'ip=::::vm-vp-quantal-x86_64-9::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-vp-quantal-x86_64-9/boot-1-quantal-core-x86_64.cgz-7be83135e2b166469de43f165e2a08c6b36f5da8-20160728-127661-lncm5s-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s2-07280741 branch=linux-devel/devel-hourly-2016072804 commit=7be83135e2b166469de43f165e2a08c6b36f5da8 BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s2-07280741/gcc-4.4/7be83135e2b166469de43f165e2a08c6b36f5da8/vmlinuz-4.7.0-01746-g7be8313 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-vp-quantal-x86_64/quantal-core-x86_64.cgz/x86_64-randconfig-s2-07280741/gcc-4.4/7be83135e2b166469de43f165e2a08c6b36f5da8/0 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw drbd.minor_count=8' -initrd /fs/sdh1/initrd-vm-vp-quantal-x86_64-9 -m 360 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-vp-quantal-x86_64-9 -serial file:/dev/shm/kboot/serial-vm-vp-quantal-x86_64-9 -daemonize -display none -monitor null Thanks, Xiaolong

5 years, 6 months

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[lkp] [blk] ee5c4fef9f: BUG: unable to handle kernel NULL pointer dereference at 0000010b

by kernel test robot

FYI, we noticed the following commit: https://github.com/0day-ci/linux Minfei-Huang/blk-core-Fix-the-bad-IO-during-checking-bio/20160728-182758 commit ee5c4fef9f2ef03ee8f283a5b24192df00e17f0f ("blk-core: Fix the bad IO during checking bio") in testcase: boot on test machine: 2 threads qemu-system-i386 -enable-kvm with 320M memory caused below changes: +------------------------------------------------+------------+------------+ | | b013517951 | ee5c4fef9f | +------------------------------------------------+------------+------------+ | boot_successes | 11 | 2 | | boot_failures | 1 | 10 | | BUG:kernel_test_crashed | 1 | | | BUG:unable_to_handle_kernel | 0 | 8 | | Oops | 0 | 8 | | EIP_is_at__lock_acquire | 0 | 8 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 8 | | IP-Config:Auto-configuration_of_network_failed | 0 | 2 | +------------------------------------------------+------------+------------+ [ 24.378591] attempt to access beyond end of device [ 24.378593] fd0: rw=0, want=8, limit=0 [ 24.378594] floppy: error -5 while reading block 0 [ 24.378600] BUG: unable to handle kernel NULL pointer dereference at 0000010b [ 24.378605] IP: [<7906d275>] __lock_acquire+0xa7/0x612 [ 24.378606] *pde = 00000000 [ 24.378608] Oops: 0002 [#1] SMP [ 24.378611] CPU: 1 PID: 574 Comm: mount Not tainted 4.7.0-rc2-00241-gee5c4fe #4 [ 24.378612] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 24.378614] task: 87152c80 ti: 883f0000 task.ti: 883f0000 [ 24.378615] EIP: 0060:[<7906d275>] EFLAGS: 00010002 CPU: 1 [ 24.378617] EIP is at __lock_acquire+0xa7/0x612 [ 24.378618] EAX: 00000007 EBX: 00000002 ECX: 00000000 EDX: 00000000 [ 24.378619] ESI: 00000001 EDI: 87152c80 EBP: 883f1c2c ESP: 883f1c00 [ 24.378620] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 [ 24.378621] CR0: 80050033 CR2: 0000010b CR3: 0f8bd000 CR4: 00000690 [ 24.378625] Stack: [ 24.378630] 00000000 7a267440 00000202 883f1c1c 00000000 ffffffff 883f1d74 883f1c2c [ 24.378634] 00000002 87152c80 883f1d74 883f1c64 7906da8d 00000000 00000001 00000001 [ 24.378637] 00000000 79066107 00000000 00000000 00000000 00000000 883f1d64 00000202 [ 24.378638] Call Trace: [ 24.378640] [<7906da8d>] lock_acquire+0x60/0x7c [ 24.378644] [<79066107>] ? complete+0x12/0x35 [ 24.378648] [<79b9a42a>] _raw_spin_lock_irqsave+0x34/0x44 [ 24.378650] [<79066107>] ? complete+0x12/0x35 [ 24.378651] [<79066107>] complete+0x12/0x35 [ 24.378654] [<79467b9a>] floppy_rb0_cb+0x31/0x38 [ 24.378656] [<7932d102>] bio_endio+0x39/0x51 [ 24.378659] [<7932ec47>] generic_make_request_checks+0x13a/0x144 [ 24.378661] [<793300ae>] generic_make_request+0x11/0x12a [ 24.378663] [<79330293>] submit_bio+0xcc/0xd3 [ 24.378665] [<79468347>] __floppy_read_block_0+0xbc/0xfe [ 24.378668] [<7906bfa3>] ? mark_held_locks+0x4b/0x65 [ 24.378671] [<79b9a5de>] ? _raw_spin_unlock_irqrestore+0x39/0x4b [ 24.378672] [<79467b69>] ? floppy_find+0x3b/0x3b [ 24.378674] [<79468955>] floppy_revalidate+0x104/0x171 [ 24.378678] [<79117276>] check_disk_change+0x41/0x4e [ 24.378680] [<79467e9a>] floppy_open+0x20c/0x28d [ 24.378682] [<7911697b>] __blkdev_get+0xf9/0x34f [ 24.378684] [<79116d39>] blkdev_get+0x168/0x25c [ 24.378689] [<790f8206>] ? path_put+0x15/0x18 [ 24.378691] [<79117061>] ? lookup_bdev+0x62/0x72 [ 24.378693] [<79117094>] blkdev_get_by_path+0x23/0x53 [ 24.378696] [<790f2820>] mount_bdev+0x2a/0x157 [ 24.378700] [<7917748a>] ext4_mount+0x10/0x12 [ 24.378702] [<7917af40>] ? ext4_calculate_overhead+0x30e/0x30e [ 24.378704] [<790f2ad3>] mount_fs+0x53/0x110 [ 24.378708] [<79107ab4>] vfs_kern_mount+0x47/0xaa [ 24.378710] [<79108d9b>] do_mount+0x7a6/0x8a6 [ 24.378714] [<790c35c2>] ? strndup_user+0x27/0x3f [ 24.378717] [<79109040>] SyS_mount+0x52/0x76 [ 24.378720] [<79000f2e>] do_int80_syscall_32+0x48/0x5a [ 24.378722] [<79b9ab2c>] entry_INT80_32+0x2c/0x2c [ 24.378747] Code: 80 08 48 7a 74 03 8b 75 0c 83 fa 01 77 0b 8b 45 ec 8b 44 90 04 85 c0 75 12 31 c9 8b 45 ec e8 8f cc ff ff 85 c0 0f 84 f2 04 00 00 <f0> ff 80 04 01 00 00 8b 9f 58 04 00 00 89 5d e4 83 3d 08 8a bc [ 24.378750] EIP: [<7906d275>] __lock_acquire+0xa7/0x612 SS:ESP 0068:883f1c00 [ 24.378750] CR2: 000000000000010b [ 24.378752] ---[ end trace beb8a2f440b7388d ]--- [ 24.378753] Kernel panic - not syncing: Fatal exception FYI, raw QEMU command line is: qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-s1-201630/gcc-6/ee5c4fef9f2ef03ee8f283a5b24192df00e17f0f/vmlinuz-4.7.0-rc2-00241-gee5c4fe -append 'ip=::::vm-kbuild-yocto-i386-10::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-kbuild-yocto-i386-10/boot-1-yocto-minimal-i386.cgz-ee5c4fef9f2ef03ee8f283a5b24192df00e17f0f-20160728-20894-1h3orba-0.yaml ARCH=i386 kconfig=i386-randconfig-s1-201630 branch=linux-devel/devel-catchup-201607281838 commit=ee5c4fef9f2ef03ee8f283a5b24192df00e17f0f BOOT_IMAGE=/pkg/linux/i386-randconfig-s1-201630/gcc-6/ee5c4fef9f2ef03ee8f283a5b24192df00e17f0f/vmlinuz-4.7.0-rc2-00241-gee5c4fe max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-yocto-i386/yocto-minimal-i386.cgz/i386-randconfig-s1-201630/gcc-6/ee5c4fef9f2ef03ee8f283a5b24192df00e17f0f/0 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw drbd.minor_count=8' -initrd /fs/sda1/initrd-vm-kbuild-yocto-i386-10 -m 320 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -watchdog-action debug -rtc base=localtime -drive file=/fs/sda1/disk0-vm-kbuild-yocto-i386-10,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-kbuild-yocto-i386-10 -serial file:/dev/shm/kboot/serial-vm-kbuild-yocto-i386-10 -daemonize -display none -monitor null Thanks, Xiaolong

5 years, 6 months

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[lkp] [mm, kasan] a6efa0b2aa: Undefined behaviour in mm/kasan/quarantine.c:102:13

by kernel test robot

FYI, we noticed the following commit: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit a6efa0b2aa5568872abff95bfa7d8a4dba00f86f ("mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB") in testcase: boot on test machine: 1 threads qemu-system-x86_64 -enable-kvm -cpu SandyBridge with 320M memory caused below changes: 7809 [ 18.666107] UBSAN: Undefined behaviour in mm/kasan/quarantine.c:102:13 7810 [ 18.668198] member access within misaligned address ffff88000d1efebc for type 'struct qlist_node' 7811 [ 18.670368] which requires 8 byte alignment 7812 [ 18.671494] CPU: 0 PID: 1 Comm: swapper Not tainted 4.7.0-rc7-00368-ga6efa0b #1 7813 [ 18.673400] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 7814 [ 18.675812] 0000000000000000 ffff88000d4af918 ffffffff81ac3c82 ffff88000d4af938 7815 [ 18.678219] ffffffff81b60046 000000000000001f ffffffff8370a6c0 ffff88000d4af9d8 7816 [ 18.680606] ffffffff81b60a2f ffffffff8370b44c 0000000041b58ab3 ffffffff82b6a7c6 7817 [ 18.683014] Call Trace: 7818 [ 18.683822] [<ffffffff81ac3c82>] dump_stack+0x19/0x1b 7819 [ 18.685112] [<ffffffff81b60046>] ubsan_epilogue+0xe/0x84 7820 [ 18.687650] [<ffffffff81b60a2f>] __ubsan_handle_type_mismatch+0x1e2/0x20a 7821 [ 18.689369] [<ffffffff81b6084d>] ? __ubsan_handle_divrem_overflow+0x16c/0x16c 7822 [ 18.691296] [<ffffffff81339dd2>] ? ___slab_alloc+0x710/0x93e 7823 [ 18.692941] [<ffffffff81ac781f>] ? idr_get_empty_slot+0xddf/0xddf 7824 [ 18.698603] [<ffffffff81343846>] quarantine_reduce+0x1d3/0x23f 7825 [ 18.700062] [<ffffffff81341ef4>] kasan_kmalloc+0x28/0x91 7826 [ 18.701428] [<ffffffff81341f6f>] kasan_slab_alloc+0x12/0x14 7827 [ 18.702846] [<ffffffff8133a3c4>] kmem_cache_alloc+0x334/0x451 7828 [ 18.704305] [<ffffffff81478c73>] ? __kernfs_new_node+0xa9/0x1ff 7829 [ 18.705794] [<ffffffff81478c73>] __kernfs_new_node+0xa9/0x1ff 7830 [ 18.707243] [<ffffffff81478bca>] ? kernfs_dop_revalidate+0x2c9/0x2c9 7831 [ 18.721888] [<ffffffff81ad541c>] ? rb_first+0x35/0x8c 7832 [ 18.723213] [<ffffffff81478843>] ? kernfs_leftmost_descendant+0x48/0x5b 7833 [ 18.724800] [<ffffffff8147c0a7>] kernfs_new_node+0xa0/0xe2 7834 [ 18.726201] [<ffffffff81480506>] __kernfs_create_file+0x33/0x19f 7835 [ 18.727704] [<ffffffff81482179>] sysfs_add_file_mode_ns+0x26c/0x3cd 7836 [ 18.729371] [<ffffffff81482505>] sysfs_add_file+0x50/0x57 7837 [ 18.730834] [<ffffffff81483ff0>] sysfs_merge_group+0x109/0x1d4 7838 [ 18.748017] [<ffffffff81dd60bc>] dpm_sysfs_add+0x9e/0x13e 7839 [ 18.749196] [<ffffffff81dbb549>] device_add+0xa66/0x1034 7840 [ 18.750342] [<ffffffff81dbaae3>] ? device_private_init+0x1e9/0x1e9 7841 [ 18.751629] [<ffffffff81db7eac>] ? device_create_file+0x155/0x155 7842 [ 18.752898] [<ffffffff8133a926>] ? kmem_cache_alloc_trace+0x445/0x457 7843 [ 18.754233] [<ffffffff81dc09d3>] ? subsys_register+0x3d/0x168 7844 [ 18.755544] [<ffffffff81dbbb31>] device_register+0x1a/0x1d 7845 [ 18.756717] [<ffffffff81dc0a97>] subsys_register+0x101/0x168 7846 [ 18.758022] [<ffffffff81dc3561>] subsys_system_register+0x34/0x3a 7847 [ 18.759308] [<ffffffff86c85359>] ? edac_mc_sysfs_init+0xcf/0xcf 7848 [ 18.769681] [<ffffffff86c85378>] edac_init+0x1f/0x70 7849 [ 18.779343] [<ffffffff81000597>] do_one_initcall+0x14e/0x200 7850 [ 18.780772] [<ffffffff81000449>] ? initcall_blacklisted+0x146/0x146 7851 [ 18.790449] [<ffffffff8114c800>] ? remove_wait_queue+0x154/0x1ca 7852 [ 18.791916] [<ffffffff8112f59a>] ? preempt_count_sub+0x18/0xd9 7853 [ 18.793370] [<ffffffff86c01a28>] kernel_init_freeable+0x2b8/0x34c 7854 [ 18.794868] [<ffffffff82580aba>] kernel_init+0x11/0x11b 7855 [ 18.796185] [<ffffffff8258becf>] ret_from_fork+0x1f/0x40 7856 [ 18.797540] [<ffffffff82580aa9>] ? rest_init+0x90/0x90 7857 [ 18.807610] ================================================================================ FYI, raw QEMU command line is: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -kernel /pkg/linux/x86_64-randconfig-s4-07242348/gcc-6/a6efa0b2aa5568872abff95bfa7d8a4dba00f86f/vmlinuz-4.7.0-rc7-00368-ga6efa0b -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-kbuild-yocto-x86_64-59/boot-1-yocto-minimal-x86_64.cgz-a6efa0b2aa5568872abff95bfa7d8a4dba00f86f-20160725-6441-1w86cht-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s4-07242348 branch=linux-next/master commit=a6efa0b2aa5568872abff95bfa7d8a4dba00f86f BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s4-07242348/gcc-6/a6efa0b2aa5568872abff95bfa7d8a4dba00f86f/vmlinuz-4.7.0-rc7-00368-ga6efa0b max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-yocto-x86_64/yocto-minimal-x86_64.cgz/x86_64-randconfig-s4-07242348/gcc-6/a6efa0b2aa5568872abff95bfa7d8a4dba00f86f/0 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-kbuild-yocto-x86_64-59::dhcp drbd.minor_count=8' -initrd /fs/sdg1/initrd-vm-kbuild-yocto-x86_64-59 -m 320 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/sdg1/disk0-vm-kbuild-yocto-x86_64-59,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-kbuild-yocto-x86_64-59 -serial file:/dev/shm/kboot/serial-vm-kbuild-yocto-x86_64-59 -daemonize -display none -monitor null Thanks, Xiaolong

5 years, 6 months

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[lkp] [md] 8430e7e0af: BUG: unable to handle kernel NULL pointer dereference at 0000000000000050

by kernel test robot

FYI, we noticed the following commit: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 8430e7e0af9a15063b90343e3beebc164c8e90f3 ("md: disconnect device from personality before trying to remove it.") in testcase: mdadm-selftests with following parameters: test_prefix: 10 on test machine: 8 threads Nehalem with 4G memory caused below changes: +--------------------------------------------------------------+------------+------------+ | | 7ac5044722 | 8430e7e0af | +--------------------------------------------------------------+------------+------------+ | boot_successes | 13 | 4 | | boot_failures | 0 | 11 | | BUG:unable_to_handle_kernel | 0 | 11 | | Oops | 0 | 11 | | RIP:remove_and_add_spares | 0 | 10 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 10 | | backtrace:vfs_write+0x | 0 | 10 | | backtrace:SyS_write+0x | 0 | 10 | | WARNING:at_arch/x86/kernel/smp.c:#native_smp_send_reschedule | 0 | 1 | +--------------------------------------------------------------+------------+------------+ [ 31.258520] md: bind<loop9> [ 31.258925] md: bind<loop8> [ 31.299842] md: bind<loop10> [ 31.303080] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050 [ 31.303611] IP: [<ffffffff817752f6>] remove_and_add_spares+0x236/0x310 [ 31.303995] PGD 8422c067 PUD 92d3a067 PMD 0 [ 31.304363] Oops: 0000 [#1] SMP [ 31.304590] Modules linked in: multipath loop raid456 async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid10 raid1 raid0 rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole sg sr_mod sd_mod cdrom dcdbas ata_generic snd_hda_codec_realtek pata_acpi snd_hda_codec_generic i7core_edac coretemp kvm_intel snd_hda_codec_hdmi kvm ata_piix irqbypass crc32c_intel pcspkr serio_raw edac_core usb_storage libata snd_hda_intel firewire_ohci firewire_core crc_itu_t snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd soundcore shpchp acpi_cpufreq broadcom bcm_phy_lib [ 31.308998] CPU: 0 PID: 876 Comm: mdadm Not tainted 4.6.0-10682-g8430e7e #1 [ 31.309361] Hardware name: Dell Inc. Studio XPS 8000/0X231R, BIOS A01 08/11/2009 [ 31.309882] task: ffff8800977da480 ti: ffff880084534000 task.ti: ffff880084534000 [ 31.310327] RIP: 0010:[<ffffffff817752f6>] [<ffffffff817752f6>] remove_and_add_spares+0x236/0x310 [ 31.310863] RSP: 0018:ffff880084537d40 EFLAGS: 00010246 [ 31.311163] RAX: 0000000000000000 RBX: ffff8800a2377600 RCX: 0000000000000000 [ 31.311532] RDX: 0000000000000000 RSI: ffff8800a2377600 RDI: ffff8800a0d9c800 [ 31.311901] RBP: ffff880084537d98 R08: 0000000000000000 R09: ffff8800a0d9c848 [ 31.312270] R10: 00007f50ade33760 R11: 0000000000000246 R12: ffff8800a2377600 [ 31.312640] R13: ffff8800a0d9c818 R14: ffff8800a0d9c800 R15: ffff8800a0d9c801 [ 31.313009] FS: 00007f50ae254700(0000) GS:ffff88013fc00000(0000) knlGS:0000000000000000 [ 31.313477] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.313793] CR2: 0000000000000050 CR3: 000000008455b000 CR4: 00000000000006f0 [ 31.314162] Stack: [ 31.314335] ffff8800a0d9c848 ffff880000000000 ffff8800a0d9c800 ffff880084537d68 [ 31.314909] ffffffff813cb570 ffff880084537d98 ffff8800a2377600 ffff880135d40000 [ 31.315483] 0000000000000006 0000000000000006 ffff8800a0d9c800 ffff880084537dc0 [ 31.316057] Call Trace: [ 31.316250] [<ffffffff813cb570>] ? selinux_capable+0x20/0x30 [ 31.316567] [<ffffffff81779401>] state_store+0x81/0x410 [ 31.316868] [<ffffffff8176fda7>] rdev_attr_store+0x77/0xb0 [ 31.317179] [<ffffffff812813f7>] sysfs_kf_write+0x37/0x40 [ 31.317485] [<ffffffff81280754>] kernfs_fop_write+0x134/0x1c0 [ 31.317807] [<ffffffff811ff9f8>] __vfs_write+0x28/0x120 [ 31.318109] [<ffffffff810a3989>] ? __might_sleep+0x49/0x80 [ 31.318420] [<ffffffff810c8f35>] ? percpu_down_read+0x25/0x70 [ 31.318740] [<ffffffff81200b75>] vfs_write+0xb5/0x1a0 [ 31.319034] [<ffffffff81201eb6>] SyS_write+0x46/0xa0 [ 31.321012] [<ffffffff81919f72>] entry_SYSCALL_64_fastpath+0x1a/0xa4 [ 31.321354] Code: 00 00 00 a8 04 0f 85 6a ff ff ff 48 c7 83 e8 00 00 00 00 00 00 00 49 8b 46 08 4c 89 4d a8 48 89 de 89 4d b0 44 88 45 b8 4c 89 f7 <ff> 50 50 85 c0 44 0f b6 45 b8 8b 4d b0 4c 8b 4d a8 0f 85 33 ff [ 31.324457] RIP [<ffffffff817752f6>] remove_and_add_spares+0x236/0x310 [ 31.324840] RSP <ffff880084537d40> [ 31.325069] CR2: 0000000000000050 [ 31.325311] ---[ end trace ef9ffa4f5b63806d ]--- [ 31.325683] Kernel panic - not syncing: Fatal exception To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Xiaolong

5 years, 6 months

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[tracefs] f49ffd11d0: WARNING: CPU: 0 PID: 1 at kernel/trace/trace.c:6271 init_tracer_tracefs

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 Hari-Bathini/perf-tracefs-Container-aware-tracing-support/20160728-052933 commit f49ffd11d08100b7bc21e04e06e2314371377464 Author: Hari Bathini <hbathini(a)linux.vnet.ibm.com> AuthorDate: Thu Jul 28 02:57:49 2016 +0530 Commit: 0day robot <fengguang.wu(a)intel.com> CommitDate: Thu Jul 28 05:29:39 2016 +0800 tracefs: add 'newinstance' mount option When tracefs is mounted inside a container, its files are visible to all containers. This implies that a user from within a container can list/delete uprobes registered elsewhere, leading to security issues and/or denial of service (Eg. deleting a probe that is registered from elsewhere). This patch addresses this problem by adding mount option 'newinstance', allowing containers to have their own instance mounted separately. Something like the below from within a container: $ mount -o newinstance -t tracefs tracefs /sys/kernel/tracing $ $ $ perf probe /lib/x86_64-linux-gnu/libc.so.6 malloc Added new event: probe_libc:malloc (on malloc in /lib/x86_64-linux-gnu/libc.so.6) You can now use it in all perf tools, such as: perf record -e probe_libc:malloc -aR sleep 1 $ $ $ perf probe --list probe_libc:malloc (on __libc_malloc in /lib64/libc.so.6) $ while another container/host has a completely different view: $ perf probe --list probe_libc:memset (on __libc_memset in /lib64/libc.so.6) $ This patch reuses the code that provides support to create new instances under tracefs instances directory. Signed-off-by: Hari Bathini <hbathini(a)linux.vnet.ibm.com> +------------------------------------------------------------------+------------+------------+------------+ | | b18cfd29f3 | f49ffd11d0 | 468e21ad86 | +------------------------------------------------------------------+------------+------------+------------+ | boot_successes | 67 | 0 | 0 | | boot_failures | 2 | 30 | 54 | | IP-Config:Auto-configuration_of_network_failed | 2 | 2 | 4 | | WARNING:at_kernel/trace/trace.c:#init_tracer_tracefs | 0 | 30 | 54 | | WARNING:at_kernel/trace/trace.c:#tracer_init_tracefs | 0 | 30 | 54 | | WARNING:at_kernel/trace/trace.c:#create_trace_option_files | 0 | 30 | 54 | | invoked_oom-killer:gfp_mask=0x | 0 | 2 | 10 | | Mem-Info | 0 | 2 | 10 | | Out_of_memory:Kill_process | 0 | 2 | 10 | | Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 0 | 2 | 10 | | backtrace:dump_stack+0x | 0 | 30 | 54 | | backtrace:init_tracer_tracefs+0x | 0 | 30 | 54 | | backtrace:tracer_init_tracefs+0x | 0 | 30 | 54 | | backtrace:kernel_init_freeable+0x | 0 | 30 | 54 | | backtrace:ret_from_fork+0x | 0 | 30 | 54 | | backtrace:__update_tracer_options+0x | 0 | 30 | 54 | | backtrace:SyS_clone+0x | 0 | 0 | 3 | | backtrace:do_execveat_common+0x | 0 | 0 | 1 | | backtrace:SyS_execve+0x | 0 | 0 | 1 | +------------------------------------------------------------------+------------+------------+------------+ [ 1.240349] Could not create tracefs 'uprobe_profile' entry [ 1.241165] Could not create tracefs 'snapshot' entry [ 1.241923] ------------[ cut here ]------------ [ 1.242684] WARNING: CPU: 0 PID: 1 at kernel/trace/trace.c:6271 init_tracer_tracefs+0x57b/0x640 [ 1.244129] Could not create tracefs directory 'per_cpu/0' [ 1.244901] Modules linked in: [ 1.245497] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.7.0-rc5-00694-gf49ffd1 #1 [ 1.246611] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 1.247872] 0000000000000000 ffff88000eccfd30 ffffffff819b0684 0000000000000000 [ 1.249265] 0000000000000009 ffff88000eccfd80 ffffffff811de4fb ffff88000eccfd70 [ 1.250652] ffffffff810c25b2 0000187f00000000 ffffffff824cde20 000000000000187f [ 1.252049] Call Trace: [ 1.252508] [<ffffffff819b0684>] dump_stack+0xf9/0x185 [ 1.253264] [<ffffffff811de4fb>] ? init_tracer_tracefs+0x57b/0x640 [ 1.254133] [<ffffffff810c25b2>] __warn+0x192/0x1c0 [ 1.254856] [<ffffffff810c2648>] warn_slowpath_fmt+0x68/0x80 [ 1.255669] [<ffffffff8165c0fc>] ? __create_dir+0x16c/0x1f0 [ 1.256478] [<ffffffff811de4fb>] init_tracer_tracefs+0x57b/0x640 [ 1.257335] [<ffffffff82dbb965>] ? do_early_param+0xf6/0xf6 [ 1.258136] [<ffffffff82dbb965>] ? do_early_param+0xf6/0xf6 [ 1.258933] [<ffffffff82df0857>] tracer_init_tracefs+0x98/0x20c [ 1.259771] [<ffffffff82df07bf>] ? register_tracer+0x246/0x246 [ 1.260598] [<ffffffff81002239>] do_one_initcall+0x79/0x240 [ 1.261405] [<ffffffff82dbb965>] ? do_early_param+0xf6/0xf6 [ 1.262210] [<ffffffff82dbc951>] kernel_init_freeable+0x1eb/0x2d3 [ 1.263071] [<ffffffff82009078>] kernel_init+0x18/0x1f0 [ 1.263826] [<ffffffff8201450f>] ret_from_fork+0x1f/0x40 [ 1.264604] [<ffffffff82009060>] ? rest_init+0x90/0x90 [ 1.265547] ---[ end trace 0e8e4ebf618fbad5 ]--- [ 1.266356] Could not create tracefs 'tracing_thresh' entry git bisect start 468e21ad86d6d4c008fd03b5dc29d43a8f9e27ef 523d939ef98fd712632d93a5a2b588e477a7565e -- git bisect bad 0f48c074e49b503217e34b3f6a158a5757218ec1 # 14:49 0- 26 Merge 'miklos-vfs/overlayfs-next' into devel-spot-201607280820 git bisect bad cf934a88e87c2f2a9cdbf78dbd4bcccc65e98162 # 14:49 0- 50 Merge 'spi/for-next' into devel-spot-201607280820 git bisect good b975c455ad5a9fdbcfaffbb4ecab4a1fa9337525 # 14:54 21+ 6 Merge 'linux-review/Nicolin-Chen/ASoC-rt5659-Add-mclk-controls/20160728-070432' into devel-spot-201607280820 git bisect good c655dcde536ef0ce1f42c9887ff7dfc010ddf1bd # 14:59 22+ 4 Merge 'linux-review/Laura-Garcia-Liebana/netfilter-nft_nth-match-every-n-packets/20160728-060610' into devel-spot-201607280820 git bisect bad 891168b2ad7ca32fdd5a8854789677bca953dbc0 # 14:59 0- 30 Merge 'block/for-linus' into devel-spot-201607280820 git bisect bad be216e3fff5c5f84bf105104ddd147f710b53905 # 14:59 0- 28 Merge 'linux-review/Hari-Bathini/perf-tracefs-Container-aware-tracing-support/20160728-052933' into devel-spot-201607280820 git bisect good b18cfd29f3039effe4d2d58f61b868f0c272584b # 15:03 63+ 0 tracefs: add instances support for uprobe events git bisect bad f49ffd11d08100b7bc21e04e06e2314371377464 # 15:03 0- 28 tracefs: add 'newinstance' mount option # first bad commit: [f49ffd11d08100b7bc21e04e06e2314371377464] tracefs: add 'newinstance' mount option git bisect good b18cfd29f3039effe4d2d58f61b868f0c272584b # 15:04 63+ 0 tracefs: add instances support for uprobe events # extra tests with CONFIG_DEBUG_INFO_REDUCED git bisect bad f49ffd11d08100b7bc21e04e06e2314371377464 # 15:04 0- 66 tracefs: add 'newinstance' mount option # extra tests on HEAD of linux-devel/devel-spot-201607280820 git bisect bad 468e21ad86d6d4c008fd03b5dc29d43a8f9e27ef # 15:05 0- 54 0day head guard for 'devel-spot-201607280820' # extra tests on tree/branch linux-review/Hari-Bathini/perf-tracefs-Container-aware-tracing-support/20160728-052933 git bisect bad f49ffd11d08100b7bc21e04e06e2314371377464 # 15:11 0- 28 tracefs: add 'newinstance' mount option # extra tests with first bad commit reverted git bisect good 47a2d96332f81965e04f23969e5ba67c78ab12a9 # 15:41 60+ 1 Revert "tracefs: add 'newinstance' mount option" # extra tests on tree/branch linus/master git bisect good 194dc870a5890e855ecffb30f3b80ba7c88f96d6 # 16:08 66+ 6 Add braces to avoid "ambiguous ‘else’" compiler warnings # extra tests on tree/branch linux-next/master git bisect good d4e661a48572b90ab727149e2f2ec087380a573b # 18:18 66+ 4 Add linux-next specific files for 20160728 This script may reproduce the error. ---------------------------------------------------------------------------- #!/bin/bash kernel=$1 initrd=yocto-minimal-x86_64.cgz wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd kvm=( qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap -kernel $kernel -initrd $initrd -m 256 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -watchdog-action debug -rtc base=localtime -serial stdio -display none -monitor null ) append=( root=/dev/ram0 hung_task_panic=1 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw drbd.minor_count=8 ) "${kvm[@]}" --append "${append[*]}" ---------------------------------------------------------------------------- --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/lkp Intel Corporation

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LKP July 2016