Greeting, FYI, we noticed a 443.3% improvement of stress-ng.link.ops_per_sec due to commit: commit: 6e3688e66f2ff414a5f37afba2cb80755c85ae25 ("btrfs: eliminate some false positives when checking if inode was logged") https://github.com/kdave/btrfs-devel.git misc-next in testcase: stress-ng on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 512G memory with following parameters: nr_threads: 10% disk: 1HDD testtime: 60s fs: btrfs class: filesystem test: link cpufreq_governor: performance ucode: 0x5003006 Details are as below: --------------------------------------------------------------------------------------------------> To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run bin/lkp run generated-yaml-file ========================================================================================= class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode: filesystem/gcc-9/performance/1HDD/btrfs/x86_64-rhel-8.3/10%/debian-10.4-x86_64-20200603.cgz/lkp-csl-2sp7/link/stress-ng/60s/0x5003006 commit: eb0a5f1a46 ("btrfs: drop unnecessary ASSERT from btrfs_submit_direct()") 6e3688e66f ("btrfs: eliminate some false positives when checking if inode was logged") eb0a5f1a46e697fc 6e3688e66f2ff414a5f37afba2c ---------------- --------------------------- %stddev %change %stddev \ | \ 40.50 ± 11% +448.1% 222.00 ± 3% stress-ng.link.ops 0.67 ± 11% +443.3% 3.66 ± 2% stress-ng.link.ops_per_sec 50458224 ± 4% -98.0% 1000426 ± 3% stress-ng.time.file_system_outputs 10667013 ± 3% -20.2% 8508324 ± 3% stress-ng.time.voluntary_context_switches 11356916 ± 20% -25.1% 8509645 ± 8% turbostat.C1 0.04 ± 19% +0.2 0.27 ± 4% mpstat.cpu.all.iowait% 0.06 ± 5% +0.0 0.06 ± 6% mpstat.cpu.all.soft% 0.14 +0.0 0.19 ± 3% mpstat.cpu.all.usr% 625.00 ± 22% +632.7% 4579 ± 4% vmstat.io.bo 3446795 -17.0% 2860407 vmstat.memory.cache 334821 ± 3% -11.7% 295665 ± 2% vmstat.system.cs 413727 ± 12% -50.8% 203362 ± 14% numa-numastat.node0.local_node 463157 ± 8% -37.4% 289923 ± 10% numa-numastat.node0.numa_hit 186085 ± 29% +60.7% 299126 ± 10% numa-numastat.node1.local_node 223244 ± 17% +34.0% 299217 ± 10% numa-numastat.node1.numa_hit 911721 -66.8% 302754 meminfo.Active 904731 -67.3% 296155 meminfo.Active(file) 3324376 -17.7% 2736685 meminfo.Cached 2287 ± 6% +254.7% 8114 ± 3% meminfo.Dirty 3475 ± 30% +590.8% 24004 ± 3% meminfo.Inactive(file) 5581525 -11.5% 4938001 meminfo.Memused 5664872 -12.3% 4970572 meminfo.max_used_kB 872181 ± 4% -76.1% 208067 ± 9% numa-meminfo.node0.Active 1634 ± 12% -28.8% 1164 ± 16% numa-meminfo.node0.Active(anon) 870545 ± 4% -76.2% 206903 ± 9% numa-meminfo.node0.Active(file) 2181 ± 7% +145.6% 5356 ± 5% numa-meminfo.node0.Dirty 3330 ± 32% +477.5% 19230 ± 33% numa-meminfo.node0.Inactive(file) 33176 ± 34% +60.6% 53280 ± 23% numa-meminfo.node1.AnonPages 116.67 ± 96% +2267.7% 2762 ± 14% numa-meminfo.node1.Dirty 135.33 ±165% +3427.8% 4774 ±125% numa-meminfo.node1.Inactive(file) 100.83 ± 10% +500.3% 605.33 ± 58% interrupts.CPU26.NMI:Non-maskable_interrupts 100.83 ± 10% +500.3% 605.33 ± 58% interrupts.CPU26.PMI:Performance_monitoring_interrupts 169.33 ± 45% +238.6% 573.33 ± 49% interrupts.CPU27.NMI:Non-maskable_interrupts 169.33 ± 45% +238.6% 573.33 ± 49% interrupts.CPU27.PMI:Performance_monitoring_interrupts 14.00 ± 53% +336.9% 61.17 ± 58% interrupts.CPU29.RES:Rescheduling_interrupts 14.33 ± 53% +332.6% 62.00 ± 50% interrupts.CPU30.RES:Rescheduling_interrupts 14.33 ± 68% +443.0% 77.83 ± 39% interrupts.CPU32.RES:Rescheduling_interrupts 1188 ± 36% +65.3% 1964 ± 33% interrupts.CPU38.CAL:Function_call_interrupts 12.50 ±105% +397.3% 62.17 ± 46% interrupts.CPU41.RES:Rescheduling_interrupts 4442 ± 20% +55.5% 6906 ± 23% interrupts.CPU49.CAL:Function_call_interrupts 1597 ± 31% -71.4% 457.17 ± 57% interrupts.CPU50.NMI:Non-maskable_interrupts 1597 ± 31% -71.4% 457.17 ± 57% interrupts.CPU50.PMI:Performance_monitoring_interrupts 278.00 ± 22% -37.7% 173.17 ± 49% interrupts.CPU60.RES:Rescheduling_interrupts 925.17 ± 37% +78.1% 1647 ± 26% interrupts.CPU86.CAL:Function_call_interrupts 631.00 ± 20% +38.5% 874.17 ± 18% interrupts.CPU95.CAL:Function_call_interrupts 226188 -67.3% 74046 proc-vmstat.nr_active_file 6312326 ± 4% -97.4% 166231 ± 2% proc-vmstat.nr_dirtied 571.17 ± 6% +254.9% 2027 ± 3% proc-vmstat.nr_dirty 831359 -17.7% 684437 proc-vmstat.nr_file_pages 868.17 ± 30% +591.2% 6000 ± 3% proc-vmstat.nr_inactive_file 5919 ± 24% +620.0% 42618 ± 4% proc-vmstat.nr_written 226188 -67.3% 74046 proc-vmstat.nr_zone_active_file 868.17 ± 30% +591.2% 6000 ± 3% proc-vmstat.nr_zone_inactive_file 568.33 ± 7% +262.3% 2059 ± 3% proc-vmstat.nr_zone_write_pending 687822 -14.1% 590866 proc-vmstat.numa_hit 601237 -16.1% 504215 proc-vmstat.numa_local 72656 ± 16% -30.5% 50501 ± 3% proc-vmstat.pgactivate 690604 -14.0% 593850 proc-vmstat.pgalloc_normal 325914 +3.2% 336256 proc-vmstat.pgfree 40068 ± 23% +650.4% 300651 ± 5% proc-vmstat.pgpgout 9793 ± 8% -13.0% 8519 ± 6% softirqs.CPU11.RCU 9524 ± 9% -13.9% 8204 ± 6% softirqs.CPU12.RCU 9676 ± 8% -14.3% 8290 ± 7% softirqs.CPU15.RCU 10075 ± 4% -10.2% 9043 ± 6% softirqs.CPU16.RCU 9572 ± 13% +18.8% 11374 ± 6% softirqs.CPU19.SCHED 10133 ± 5% -15.8% 8527 ± 6% softirqs.CPU4.RCU 9861 ± 5% -13.4% 8540 ± 6% softirqs.CPU48.RCU 9319 ± 18% +18.8% 11075 ± 6% softirqs.CPU49.SCHED 10100 ± 7% -18.8% 8204 ± 13% softirqs.CPU5.RCU 10309 ± 8% -17.4% 8520 ± 5% softirqs.CPU58.RCU 9653 ± 4% +11.1% 10722 ± 2% softirqs.CPU63.SCHED 10532 ± 5% -14.4% 9017 ± 9% softirqs.CPU64.RCU 10067 ± 7% -12.9% 8767 ± 10% softirqs.CPU65.RCU 10055 ± 4% +13.2% 11385 ± 3% softirqs.CPU69.SCHED 10183 ± 9% -18.8% 8266 ± 13% softirqs.CPU9.RCU 408.50 ± 12% -28.9% 290.50 ± 16% numa-vmstat.node0.nr_active_anon 217642 ± 4% -76.2% 51734 ± 9% numa-vmstat.node0.nr_active_file 2872426 ± 8% -97.9% 61376 ± 10% numa-vmstat.node0.nr_dirtied 546.17 ± 7% +145.4% 1340 ± 4% numa-vmstat.node0.nr_dirty 832.00 ± 32% +477.8% 4807 ± 33% numa-vmstat.node0.nr_inactive_file 3843 ± 17% +298.8% 15327 ± 4% numa-vmstat.node0.nr_written 408.50 ± 12% -28.9% 290.50 ± 16% numa-vmstat.node0.nr_zone_active_anon 217642 ± 4% -76.2% 51734 ± 9% numa-vmstat.node0.nr_zone_active_file 832.00 ± 32% +477.8% 4807 ± 33% numa-vmstat.node0.nr_zone_inactive_file 540.67 ± 7% +150.7% 1355 ± 4% numa-vmstat.node0.nr_zone_write_pending 8295 ± 34% +60.5% 13314 ± 23% numa-vmstat.node1.nr_anon_pages 28.50 ± 97% +2329.8% 692.50 ± 14% numa-vmstat.node1.nr_dirty 33.00 ±166% +3515.7% 1193 ±125% numa-vmstat.node1.nr_inactive_file 527.17 ± 73% +943.8% 5502 ± 9% numa-vmstat.node1.nr_written 33.00 ±166% +3515.7% 1193 ±125% numa-vmstat.node1.nr_zone_inactive_file 28.83 ± 96% +2338.7% 703.17 ± 15% numa-vmstat.node1.nr_zone_write_pending 8.68 ± 3% -18.2% 7.10 ± 7% perf-stat.i.MPKI 1.81e+09 ± 2% +17.4% 2.124e+09 perf-stat.i.branch-instructions 16450493 ± 2% +12.8% 18563795 ± 5% perf-stat.i.branch-misses 346349 ± 3% -11.3% 307308 ± 3% perf-stat.i.context-switches 2.32 -12.2% 2.04 perf-stat.i.cpi 2.034e+10 +4.7% 2.13e+10 perf-stat.i.cpu-cycles 2.286e+09 ± 2% +18.6% 2.711e+09 perf-stat.i.dTLB-loads 8.677e+08 ± 3% +26.4% 1.097e+09 perf-stat.i.dTLB-stores 28.76 +4.7 33.51 perf-stat.i.iTLB-load-miss-rate% 2819602 ± 2% +42.3% 4013412 perf-stat.i.iTLB-load-misses 7132287 ± 2% +14.0% 8128217 perf-stat.i.iTLB-loads 8.956e+09 ± 2% +18.3% 1.06e+10 perf-stat.i.instructions 3296 ± 3% -16.9% 2740 perf-stat.i.instructions-per-iTLB-miss 0.45 +13.9% 0.51 perf-stat.i.ipc 0.21 +4.7% 0.22 perf-stat.i.metric.GHz 51.84 ± 2% +19.6% 62.00 perf-stat.i.metric.M/sec 65.96 ± 8% +26.2 92.18 perf-stat.i.node-store-miss-rate% 929353 ± 7% -89.7% 95868 ± 8% perf-stat.i.node-stores 6530 ± 5% +242.7% 22380 perf-stat.i.page-faults 8.60 ± 3% -16.9% 7.15 ± 6% perf-stat.overall.MPKI 2.27 -11.5% 2.01 perf-stat.overall.cpi 28.34 +4.7 33.06 perf-stat.overall.iTLB-load-miss-rate% 3178 ± 2% -16.9% 2640 perf-stat.overall.instructions-per-iTLB-miss 0.44 +13.0% 0.50 perf-stat.overall.ipc 66.53 ± 7% +29.2 95.70 perf-stat.overall.node-store-miss-rate% 1.781e+09 ± 2% +17.4% 2.091e+09 perf-stat.ps.branch-instructions 16215139 ± 2% +12.7% 18281122 ± 5% perf-stat.ps.branch-misses 340818 ± 3% -11.3% 302456 ± 3% perf-stat.ps.context-switches 2.002e+10 +4.7% 2.096e+10 perf-stat.ps.cpu-cycles 2.25e+09 ± 2% +18.6% 2.668e+09 perf-stat.ps.dTLB-loads 8.541e+08 ± 3% +26.4% 1.08e+09 perf-stat.ps.dTLB-stores 2774998 ± 2% +42.4% 3950321 perf-stat.ps.iTLB-load-misses 7017869 ± 2% +14.0% 7999983 perf-stat.ps.iTLB-loads 8.815e+09 ± 2% +18.3% 1.043e+10 perf-stat.ps.instructions 913991 ± 7% -89.7% 94365 ± 8% perf-stat.ps.node-stores 6427 ± 5% +242.8% 22030 perf-stat.ps.page-faults 5.578e+11 ± 2% +18.9% 6.632e+11 perf-stat.total.instructions 210.00 ± 18% +139.0% 501.83 ± 7% slabinfo.biovec-128.active_objs 210.00 ± 18% +139.0% 501.83 ± 7% slabinfo.biovec-128.num_objs 385.50 ± 17% +45.6% 561.33 ± 5% slabinfo.biovec-64.active_objs 385.50 ± 17% +45.6% 561.33 ± 5% slabinfo.biovec-64.num_objs 213.00 ± 10% +79.0% 381.17 ± 3% slabinfo.biovec-max.active_objs 227.17 ± 9% +74.7% 396.83 ± 3% slabinfo.biovec-max.num_objs 3438 ± 4% +116.9% 7457 ± 3% slabinfo.btrfs_delayed_tree_ref.active_objs 87.67 ± 4% +117.5% 190.67 ± 3% slabinfo.btrfs_delayed_tree_ref.active_slabs 3438 ± 4% +116.9% 7457 ± 3% slabinfo.btrfs_delayed_tree_ref.num_objs 87.67 ± 4% +117.5% 190.67 ± 3% slabinfo.btrfs_delayed_tree_ref.num_slabs 4092 ± 4% +102.1% 8272 ± 3% slabinfo.btrfs_extent_map.active_objs 4092 ± 4% +102.1% 8272 ± 3% slabinfo.btrfs_extent_map.num_objs 233.33 ± 28% +303.8% 942.17 ± 8% slabinfo.btrfs_ordered_extent.active_objs 233.33 ± 28% +303.8% 942.17 ± 8% slabinfo.btrfs_ordered_extent.num_objs 7774 ± 3% +31.7% 10238 ± 4% slabinfo.fsnotify_mark_connector.active_objs 7774 ± 3% +31.7% 10238 ± 4% slabinfo.fsnotify_mark_connector.num_objs 8454 ± 4% +49.4% 12631 ± 7% slabinfo.kmalloc-128.active_objs 266.00 ± 3% +49.5% 397.67 ± 7% slabinfo.kmalloc-128.active_slabs 8530 ± 3% +49.3% 12735 ± 7% slabinfo.kmalloc-128.num_objs 266.00 ± 3% +49.5% 397.67 ± 7% slabinfo.kmalloc-128.num_slabs 11561 ± 7% +55.4% 17962 ± 9% slabinfo.kmalloc-192.active_objs 277.50 ± 7% +55.4% 431.33 ± 9% slabinfo.kmalloc-192.active_slabs 11670 ± 7% +55.4% 18136 ± 9% slabinfo.kmalloc-192.num_objs 277.50 ± 7% +55.4% 431.33 ± 9% slabinfo.kmalloc-192.num_slabs 8242 ± 5% +201.3% 24830 ± 7% slabinfo.kmalloc-rcl-96.active_objs 195.83 ± 5% +201.5% 590.50 ± 7% slabinfo.kmalloc-rcl-96.active_slabs 8242 ± 5% +201.3% 24833 ± 7% slabinfo.kmalloc-rcl-96.num_objs 195.83 ± 5% +201.5% 590.50 ± 7% slabinfo.kmalloc-rcl-96.num_slabs 1602 ± 11% +46.7% 2351 ± 4% slabinfo.mnt_cache.active_objs 1602 ± 11% +46.7% 2351 ± 4% slabinfo.mnt_cache.num_objs 15352 ± 4% -44.1% 8584 slabinfo.pool_workqueue.active_objs 480.50 ± 4% -44.1% 268.50 slabinfo.pool_workqueue.active_slabs 15388 ± 4% -44.0% 8615 slabinfo.pool_workqueue.num_objs 480.50 ± 4% -44.1% 268.50 slabinfo.pool_workqueue.num_slabs 34232 ± 3% -13.9% 29459 slabinfo.radix_tree_node.active_objs 34271 ± 3% -14.0% 29459 slabinfo.radix_tree_node.num_objs 447.33 ± 14% +29.6% 579.83 ± 9% slabinfo.skbuff_fclone_cache.active_objs 447.33 ± 14% +29.6% 579.83 ± 9% slabinfo.skbuff_fclone_cache.num_objs 48.74 ± 14% -48.7 0.00 perf-profile.calltrace.cycles-pp.btrfs_log_new_name.btrfs_link.vfs_link.do_linkat.__x64_sys_link 48.74 ± 14% -48.7 0.00 perf-profile.calltrace.cycles-pp.btrfs_log_inode_parent.btrfs_log_new_name.btrfs_link.vfs_link.do_linkat 46.02 ± 15% -46.0 0.00 perf-profile.calltrace.cycles-pp.log_new_dir_dentries.btrfs_log_inode_parent.btrfs_log_new_name.btrfs_link.vfs_link 44.54 ± 16% -44.5 0.00 perf-profile.calltrace.cycles-pp.btrfs_log_inode.log_new_dir_dentries.btrfs_log_inode_parent.btrfs_log_new_name.btrfs_link 51.04 ± 9% -31.6 19.43 ± 8% perf-profile.calltrace.cycles-pp.btrfs_link.vfs_link.do_linkat.__x64_sys_link.do_syscall_64 51.05 ± 9% -31.6 19.47 ± 8% perf-profile.calltrace.cycles-pp.vfs_link.do_linkat.__x64_sys_link.do_syscall_64.entry_SYSCALL_64_after_hwframe 51.18 ± 8% -30.8 20.39 ± 8% perf-profile.calltrace.cycles-pp.do_linkat.__x64_sys_link.do_syscall_64.entry_SYSCALL_64_after_hwframe 51.18 ± 8% -30.8 20.40 ± 8% perf-profile.calltrace.cycles-pp.__x64_sys_link.do_syscall_64.entry_SYSCALL_64_after_hwframe 21.23 ± 17% -21.2 0.00 perf-profile.calltrace.cycles-pp.copy_items.btrfs_log_inode.log_new_dir_dentries.btrfs_log_inode_parent.btrfs_log_new_name 21.14 ± 16% -21.1 0.00 perf-profile.calltrace.cycles-pp.drop_objectid_items.btrfs_log_inode.log_new_dir_dentries.btrfs_log_inode_parent.btrfs_log_new_name 20.27 ± 17% -20.3 0.00 perf-profile.calltrace.cycles-pp.btrfs_insert_empty_items.copy_items.btrfs_log_inode.log_new_dir_dentries.btrfs_log_inode_parent 19.47 ± 17% -19.5 0.00 perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_insert_empty_items.copy_items.btrfs_log_inode.log_new_dir_dentries 18.08 ± 18% -18.1 0.00 perf-profile.calltrace.cycles-pp.btrfs_search_slot.drop_objectid_items.btrfs_log_inode.log_new_dir_dentries.btrfs_log_inode_parent 16.64 ± 18% -16.6 0.00 perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.drop_objectid_items.btrfs_log_inode.log_new_dir_dentries 16.57 ± 18% -16.6 0.00 perf-profile.calltrace.cycles-pp.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.drop_objectid_items.btrfs_log_inode 16.40 ± 18% -16.4 0.00 perf-profile.calltrace.cycles-pp.rwsem_down_write_slowpath.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.drop_objectid_items 15.61 ± 17% -15.6 0.00 perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_insert_empty_items.copy_items.btrfs_log_inode 15.55 ± 17% -15.6 0.00 perf-profile.calltrace.cycles-pp.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_insert_empty_items.copy_items 16.64 ± 8% -5.5 11.17 ± 8% perf-profile.calltrace.cycles-pp.rwsem_down_write_slowpath.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_insert_empty_items 0.00 +0.6 0.62 ± 10% perf-profile.calltrace.cycles-pp.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_insert_empty_items.btrfs_insert_inode_ref.btrfs_add_link 0.00 +0.7 0.70 ± 10% perf-profile.calltrace.cycles-pp.__btrfs_tree_read_lock.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_del_inode_ref.__btrfs_unlink_inode 0.00 +0.8 0.78 ± 8% perf-profile.calltrace.cycles-pp.user_statfs.__do_sys_statfs.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.8 0.80 ± 8% perf-profile.calltrace.cycles-pp.btrfs_read_lock_root_node.btrfs_search_slot.btrfs_del_inode_ref.__btrfs_unlink_inode.btrfs_unlink_inode 0.00 +0.8 0.84 ± 8% perf-profile.calltrace.cycles-pp.__do_sys_statfs.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.8 0.84 ± 9% perf-profile.calltrace.cycles-pp.btrfs_get_16.btrfs_find_name_in_backref.btrfs_insert_inode_ref.btrfs_add_link.btrfs_link 0.00 +0.8 0.85 ± 13% perf-profile.calltrace.cycles-pp.btrfs_delete_delayed_dir_index.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_unlink.vfs_unlink 0.00 +0.9 0.94 ± 25% perf-profile.calltrace.cycles-pp.rwsem_down_write_slowpath.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_delete_delayed_items 0.00 +1.0 0.95 ± 24% perf-profile.calltrace.cycles-pp.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_delete_delayed_items.btrfs_async_run_delayed_root 0.00 +1.0 0.96 ± 25% perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_delete_delayed_items.btrfs_async_run_delayed_root.btrfs_work_helper 0.00 +1.1 1.12 ± 24% perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_delete_delayed_items.btrfs_async_run_delayed_root.btrfs_work_helper.process_one_work 0.00 +1.2 1.23 ± 9% perf-profile.calltrace.cycles-pp.btrfs_find_name_in_backref.btrfs_insert_inode_ref.btrfs_add_link.btrfs_link.vfs_link 0.00 +1.4 1.38 ± 24% perf-profile.calltrace.cycles-pp.btrfs_delete_delayed_items.btrfs_async_run_delayed_root.btrfs_work_helper.process_one_work.worker_thread 0.36 ±102% +2.3 2.64 ± 22% perf-profile.calltrace.cycles-pp.btrfs_async_run_delayed_root.btrfs_work_helper.process_one_work.worker_thread.kthread 0.36 ±102% +2.3 2.65 ± 22% perf-profile.calltrace.cycles-pp.btrfs_work_helper.process_one_work.worker_thread.kthread.ret_from_fork 0.38 ±102% +2.4 2.75 ± 22% perf-profile.calltrace.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork 0.39 ±102% +2.4 2.77 ± 23% perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork 0.41 ±102% +2.4 2.80 ± 22% perf-profile.calltrace.cycles-pp.ret_from_fork 0.41 ±102% +2.4 2.80 ± 22% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork 0.42 ±100% +3.4 3.82 ± 7% perf-profile.calltrace.cycles-pp.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_insert_empty_items.insert_with_overflow 0.42 ±100% +3.4 3.84 ± 7% perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_insert_empty_items.insert_with_overflow.btrfs_insert_dir_item 0.61 ±100% +4.8 5.41 ± 7% perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_insert_empty_items.insert_with_overflow.btrfs_insert_dir_item.btrfs_add_link 0.68 ±100% +5.2 5.87 ± 7% perf-profile.calltrace.cycles-pp.btrfs_insert_empty_items.insert_with_overflow.btrfs_insert_dir_item.btrfs_add_link.btrfs_link 0.68 ±100% +5.2 5.88 ± 7% perf-profile.calltrace.cycles-pp.insert_with_overflow.btrfs_insert_dir_item.btrfs_add_link.btrfs_link.vfs_link 0.76 ±100% +5.8 6.56 ± 7% perf-profile.calltrace.cycles-pp.btrfs_insert_dir_item.btrfs_add_link.btrfs_link.vfs_link.do_linkat 0.85 ±100% +6.5 7.39 ± 8% perf-profile.calltrace.cycles-pp.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_insert_empty_items.btrfs_insert_inode_ref 0.85 ±100% +6.6 7.41 ± 8% perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_insert_empty_items.btrfs_insert_inode_ref.btrfs_add_link 0.88 ±100% +6.8 7.68 ± 8% perf-profile.calltrace.cycles-pp.rwsem_down_write_slowpath.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_lookup_match_dir 0.90 ±100% +6.9 7.78 ± 8% perf-profile.calltrace.cycles-pp.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_lookup_match_dir.btrfs_lookup_dir_item 0.90 ±100% +6.9 7.82 ± 8% perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_lookup_match_dir.btrfs_lookup_dir_item.__btrfs_unlink_inode 1.08 ±100% +8.2 9.27 ± 7% perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_lookup_match_dir.btrfs_lookup_dir_item.__btrfs_unlink_inode.btrfs_unlink_inode 1.08 ±100% +8.2 9.27 ± 7% perf-profile.calltrace.cycles-pp.btrfs_lookup_match_dir.btrfs_lookup_dir_item.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_unlink 1.09 ±100% +8.2 9.31 ± 7% perf-profile.calltrace.cycles-pp.btrfs_lookup_dir_item.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_unlink.vfs_unlink 1.17 ±100% +8.7 9.89 ± 8% perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_insert_empty_items.btrfs_insert_inode_ref.btrfs_add_link.btrfs_link 1.24 ±100% +9.2 10.40 ± 8% perf-profile.calltrace.cycles-pp.btrfs_insert_empty_items.btrfs_insert_inode_ref.btrfs_add_link.btrfs_link.vfs_link 1.45 ±100% +10.7 12.17 ± 8% perf-profile.calltrace.cycles-pp.btrfs_insert_inode_ref.btrfs_add_link.btrfs_link.vfs_link.do_linkat 1.75 ±100% +13.1 14.88 ± 9% perf-profile.calltrace.cycles-pp.rwsem_down_write_slowpath.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_del_inode_ref 1.78 ±100% +13.3 15.05 ± 9% perf-profile.calltrace.cycles-pp.__btrfs_tree_lock.btrfs_lock_root_node.btrfs_search_slot.btrfs_del_inode_ref.__btrfs_unlink_inode 1.78 ±100% +13.3 15.11 ± 9% perf-profile.calltrace.cycles-pp.btrfs_lock_root_node.btrfs_search_slot.btrfs_del_inode_ref.__btrfs_unlink_inode.btrfs_unlink_inode 2.08 ±100% +15.6 17.64 ± 8% perf-profile.calltrace.cycles-pp.btrfs_search_slot.btrfs_del_inode_ref.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_unlink 2.19 ±100% +16.4 18.56 ± 8% perf-profile.calltrace.cycles-pp.btrfs_del_inode_ref.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_unlink.vfs_unlink 2.23 ±100% +16.7 18.93 ± 8% perf-profile.calltrace.cycles-pp.btrfs_add_link.btrfs_link.vfs_link.do_linkat.__x64_sys_link 3.65 ±100% +25.9 29.60 ± 8% perf-profile.calltrace.cycles-pp.__btrfs_unlink_inode.btrfs_unlink_inode.btrfs_unlink.vfs_unlink.do_unlinkat 3.66 ±100% +25.9 29.60 ± 8% perf-profile.calltrace.cycles-pp.btrfs_unlink_inode.btrfs_unlink.vfs_unlink.do_unlinkat.do_syscall_64 3.71 ±100% +26.3 30.02 ± 8% perf-profile.calltrace.cycles-pp.btrfs_unlink.vfs_unlink.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.72 ±100% +26.4 30.08 ± 8% perf-profile.calltrace.cycles-pp.vfs_unlink.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.74 ±100% +26.5 30.26 ± 8% perf-profile.calltrace.cycles-pp.do_unlinkat.do_syscall_64.entry_SYSCALL_64_after_hwframe 48.74 ± 14% -48.7 0.00 perf-profile.children.cycles-pp.btrfs_log_new_name 48.74 ± 14% -48.7 0.00 perf-profile.children.cycles-pp.btrfs_log_inode_parent 47.24 ± 14% -47.2 0.00 perf-profile.children.cycles-pp.btrfs_log_inode 46.02 ± 15% -46.0 0.00 perf-profile.children.cycles-pp.log_new_dir_dentries 51.04 ± 9% -31.6 19.43 ± 8% perf-profile.children.cycles-pp.btrfs_link 51.05 ± 9% -31.6 19.47 ± 8% perf-profile.children.cycles-pp.vfs_link 51.18 ± 8% -30.8 20.39 ± 8% perf-profile.children.cycles-pp.do_linkat 51.18 ± 8% -30.8 20.40 ± 8% perf-profile.children.cycles-pp.__x64_sys_link 21.37 ± 17% -21.4 0.00 perf-profile.children.cycles-pp.copy_items 21.29 ± 16% -21.3 0.00 perf-profile.children.cycles-pp.drop_objectid_items 22.62 ± 6% -5.7 16.88 ± 8% perf-profile.children.cycles-pp.btrfs_insert_empty_items 1.99 ± 28% -1.5 0.53 ± 4% perf-profile.children.cycles-pp.split_leaf 2.48 ± 28% -1.4 1.09 ± 14% perf-profile.children.cycles-pp.btrfs_del_items 1.34 ± 54% -1.1 0.25 ± 20% perf-profile.children.cycles-pp.btrfs_del_leaf 1.13 ± 27% -1.0 0.10 ± 14% perf-profile.children.cycles-pp.read_extent_buffer 0.96 ± 35% -0.9 0.06 ± 11% perf-profile.children.cycles-pp.btrfs_alloc_tree_block 3.18 ± 9% -0.8 2.43 ± 6% perf-profile.children.cycles-pp.btrfs_read_lock_root_node 1.28 -0.7 0.57 ± 9% perf-profile.children.cycles-pp.generic_bin_search 2.72 ± 8% -0.6 2.09 ± 6% perf-profile.children.cycles-pp.__btrfs_tree_read_lock 0.69 ± 33% -0.6 0.09 ± 25% perf-profile.children.cycles-pp.alloc_extent_buffer 0.52 ± 36% -0.4 0.11 ± 9% perf-profile.children.cycles-pp.push_leaf_left 0.44 ± 34% -0.3 0.10 ± 15% perf-profile.children.cycles-pp.btrfs_mark_buffer_dirty 0.40 ± 36% -0.3 0.07 ± 16% perf-profile.children.cycles-pp.set_extent_buffer_dirty 0.76 ± 4% -0.3 0.43 ± 7% perf-profile.children.cycles-pp.down_read 0.68 ± 9% -0.3 0.38 ± 12% perf-profile.children.cycles-pp._raw_spin_lock_irq 2.16 ± 3% -0.3 1.90 ± 6% perf-profile.children.cycles-pp.rwsem_wake 0.72 ± 6% -0.3 0.46 ± 10% perf-profile.children.cycles-pp.btrfs_root_node 0.34 ± 37% -0.2 0.09 ± 7% perf-profile.children.cycles-pp.__push_leaf_left 1.51 ± 6% -0.2 1.26 ± 8% perf-profile.children.cycles-pp.wake_up_q 0.39 ± 11% -0.2 0.16 ± 6% perf-profile.children.cycles-pp.btrfs_get_64 0.94 ± 8% -0.2 0.72 ± 10% perf-profile.children.cycles-pp.free_extent_buffer 0.36 ± 20% -0.2 0.13 ± 10% perf-profile.children.cycles-pp.__radix_tree_lookup 1.47 ± 6% -0.2 1.25 ± 9% perf-profile.children.cycles-pp.try_to_wake_up 0.26 ± 24% -0.2 0.08 ± 8% perf-profile.children.cycles-pp.release_extent_buffer 0.48 ± 9% -0.2 0.33 ± 11% perf-profile.children.cycles-pp.up_read 0.35 ± 6% -0.1 0.23 ± 10% perf-profile.children.cycles-pp.btrfs_comp_cpu_keys 0.19 ± 19% -0.1 0.09 ± 12% perf-profile.children.cycles-pp.btrfs_bin_search 0.55 ± 11% -0.1 0.45 ± 7% perf-profile.children.cycles-pp.find_extent_buffer_nolock 0.13 ± 24% -0.1 0.04 ± 72% perf-profile.children.cycles-pp.btrfs_buffer_uptodate 0.22 ± 8% -0.1 0.14 ± 11% perf-profile.children.cycles-pp.btrfs_get_32 0.12 ± 14% -0.0 0.07 ± 10% perf-profile.children.cycles-pp.leaf_space_used 0.25 ± 6% -0.0 0.22 ± 6% perf-profile.children.cycles-pp.update_curr 0.10 ± 12% -0.0 0.07 ± 6% perf-profile.children.cycles-pp.btrfs_leaf_free_space 0.00 +0.1 0.06 ± 9% perf-profile.children.cycles-pp.exit_to_user_mode_prepare 0.00 +0.1 0.06 ± 6% perf-profile.children.cycles-pp.path_init 0.12 ± 4% +0.1 0.18 ± 14% perf-profile.children.cycles-pp.__list_del_entry_valid 0.00 +0.1 0.06 ± 13% perf-profile.children.cycles-pp.__btrfs_btree_balance_dirty 0.01 ±223% +0.1 0.07 ± 15% perf-profile.children.cycles-pp.btrfs_verify_level_key 0.00 +0.1 0.07 ± 23% perf-profile.children.cycles-pp.wait_current_trans 0.00 +0.1 0.07 ± 11% perf-profile.children.cycles-pp.done_path_create 0.00 +0.1 0.07 ± 14% perf-profile.children.cycles-pp.exc_page_fault 0.00 +0.1 0.07 ± 11% perf-profile.children.cycles-pp.step_into 0.00 +0.1 0.07 ± 14% perf-profile.children.cycles-pp.syscall_exit_to_user_mode 0.09 ± 15% +0.1 0.16 ± 8% perf-profile.children.cycles-pp.kmem_cache_alloc 0.00 +0.1 0.08 ± 18% perf-profile.children.cycles-pp.generic_permission 0.00 +0.1 0.08 ± 17% perf-profile.children.cycles-pp.btrfs_commit_transaction 0.00 +0.1 0.08 ± 17% perf-profile.children.cycles-pp.__x64_sys_sync 0.00 +0.1 0.08 ± 17% perf-profile.children.cycles-pp.ksys_sync 0.00 +0.1 0.08 ± 17% perf-profile.children.cycles-pp.iterate_supers 0.07 ± 75% +0.1 0.16 ± 13% perf-profile.children.cycles-pp.mutex_lock 0.02 ±142% +0.1 0.11 ± 9% perf-profile.children.cycles-pp.asm_exc_page_fault 0.00 +0.1 0.10 ± 23% perf-profile.children.cycles-pp.d_lookup 0.00 +0.1 0.10 ± 23% perf-profile.children.cycles-pp.lookup_dcache 0.37 ± 6% +0.1 0.47 ± 8% perf-profile.children.cycles-pp.down_write 0.00 +0.1 0.10 ± 6% perf-profile.children.cycles-pp.__check_object_size 0.00 +0.1 0.10 ± 17% perf-profile.children.cycles-pp.btrfs_block_rsv_use_bytes 0.00 +0.1 0.10 ± 27% perf-profile.children.cycles-pp.lookup_fast 0.20 ± 20% +0.1 0.31 ± 11% perf-profile.children.cycles-pp.memmove_extent_buffer 0.00 +0.1 0.11 ± 12% perf-profile.children.cycles-pp.btrfs_update_root_times 0.03 ±101% +0.1 0.14 ± 16% perf-profile.children.cycles-pp.mutex_unlock 0.04 ±100% +0.1 0.15 ± 8% perf-profile.children.cycles-pp.memcmp 0.00 +0.1 0.12 ± 15% perf-profile.children.cycles-pp.lockref_get_not_dead 0.00 +0.1 0.12 ± 9% perf-profile.children.cycles-pp.btrfs_get_alloc_profile 0.00 +0.1 0.12 ± 17% perf-profile.children.cycles-pp.btrfs_trans_release_metadata 0.00 +0.1 0.13 ± 15% perf-profile.children.cycles-pp.__btrfs_add_delayed_item 0.01 ±223% +0.1 0.14 ± 10% perf-profile.children.cycles-pp.btrfs_block_rsv_migrate 0.00 +0.1 0.14 ± 11% perf-profile.children.cycles-pp.btrfs_delayed_item_reserve_metadata 0.00 +0.1 0.14 ± 16% perf-profile.children.cycles-pp.btrfs_block_rsv_add 0.00 +0.1 0.14 ± 19% perf-profile.children.cycles-pp.__d_lookup 0.01 ±223% +0.1 0.15 ± 10% perf-profile.children.cycles-pp.dput 0.02 ± 99% +0.1 0.17 ± 17% perf-profile.children.cycles-pp.__lookup_hash 0.23 ± 9% +0.1 0.38 ± 8% perf-profile.children.cycles-pp.memmove 0.01 ±223% +0.1 0.16 ± 9% perf-profile.children.cycles-pp.path_parentat 0.01 ±223% +0.2 0.16 ± 11% perf-profile.children.cycles-pp.filename_parentat 0.16 ± 23% +0.2 0.32 ± 7% perf-profile.children.cycles-pp.up_write 0.02 ±142% +0.2 0.18 ± 9% perf-profile.children.cycles-pp.vfs_statx 0.32 ± 27% +0.2 0.48 ± 11% perf-profile.children.cycles-pp.check_setget_bounds 0.03 ±101% +0.2 0.20 ± 14% perf-profile.children.cycles-pp.walk_component 0.03 ±100% +0.2 0.20 ± 7% perf-profile.children.cycles-pp.__do_sys_newlstat 0.00 +0.2 0.17 ± 18% perf-profile.children.cycles-pp.btrfs_block_rsv_release 0.00 +0.2 0.17 ± 11% perf-profile.children.cycles-pp.__legitimize_path 0.02 ±142% +0.2 0.20 ± 12% perf-profile.children.cycles-pp.inode_permission 0.00 +0.2 0.18 ± 9% perf-profile.children.cycles-pp.complete_walk 0.01 ±223% +0.2 0.19 ± 10% perf-profile.children.cycles-pp.try_to_unlazy 0.02 ±142% +0.2 0.21 ± 9% perf-profile.children.cycles-pp.memcmp_extent_buffer 0.01 ±223% +0.2 0.21 ± 15% perf-profile.children.cycles-pp.__btrfs_end_transaction 0.04 ±102% +0.2 0.28 ± 12% perf-profile.children.cycles-pp.filename_create 0.04 ±104% +0.2 0.28 ± 7% perf-profile.children.cycles-pp.strncpy_from_user 0.05 ±109% +0.2 0.29 ± 21% perf-profile.children.cycles-pp.btrfs_lookup_inode 0.04 ±101% +0.3 0.32 ± 9% perf-profile.children.cycles-pp.user_path_at_empty 0.40 ± 36% +0.3 0.68 ± 9% perf-profile.children.cycles-pp.btrfs_set_token_32 0.31 ± 54% +0.3 0.60 ± 25% perf-profile.children.cycles-pp.poll_idle 0.14 ± 46% +0.3 0.43 ± 8% perf-profile.children.cycles-pp.__btrfs_release_delayed_node 0.32 ± 36% +0.3 0.62 ± 13% perf-profile.children.cycles-pp.btrfs_get_token_32 0.04 ± 99% +0.3 0.35 ± 15% perf-profile.children.cycles-pp.start_transaction 0.06 ±108% +0.3 0.38 ± 22% perf-profile.children.cycles-pp.__btrfs_update_delayed_inode 0.04 ± 99% +0.3 0.37 ± 8% perf-profile.children.cycles-pp.btrfs_statfs 0.05 ±101% +0.3 0.38 ± 8% perf-profile.children.cycles-pp.getname_flags 0.05 ±100% +0.3 0.38 ± 9% perf-profile.children.cycles-pp.statfs_by_dentry 0.05 ±100% +0.3 0.39 ± 8% perf-profile.children.cycles-pp.vfs_statfs 0.05 ±100% +0.3 0.40 ± 10% perf-profile.children.cycles-pp.link_path_walk 0.05 ±101% +0.4 0.43 ± 12% perf-profile.children.cycles-pp.btrfs_delayed_update_inode 0.06 ±102% +0.5 0.55 ± 11% perf-profile.children.cycles-pp.btrfs_insert_delayed_dir_index 0.07 ±100% +0.5 0.58 ± 8% perf-profile.children.cycles-pp.path_lookupat 0.07 ±101% +0.5 0.60 ± 8% perf-profile.children.cycles-pp.btrfs_update_inode 0.08 ±100% +0.6 0.64 ± 8% perf-profile.children.cycles-pp.filename_lookup 0.12 ±100% +0.6 0.70 ± 21% perf-profile.children.cycles-pp.btrfs_insert_delayed_item 0.09 ±100% +0.7 0.78 ± 8% perf-profile.children.cycles-pp.user_statfs 0.11 ±103% +0.7 0.82 ± 7% perf-profile.children.cycles-pp.btrfs_free_path 0.10 ±100% +0.7 0.84 ± 8% perf-profile.children.cycles-pp.__do_sys_statfs 0.10 ±100% +0.7 0.85 ± 13% perf-profile.children.cycles-pp.btrfs_delete_delayed_dir_index 0.11 ±100% +0.8 0.87 ± 9% perf-profile.children.cycles-pp.btrfs_get_16 0.10 ±100% +0.8 0.87 ± 12% perf-profile.children.cycles-pp.mutex_spin_on_owner 0.11 ±100% +0.8 0.96 ± 13% perf-profile.children.cycles-pp.__mutex_lock 0.15 ±100% +1.1 1.25 ± 9% perf-profile.children.cycles-pp.btrfs_find_name_in_backref 0.17 ±101% +1.2 1.38 ± 24% perf-profile.children.cycles-pp.btrfs_delete_delayed_items 0.36 ±102% +2.3 2.64 ± 22% perf-profile.children.cycles-pp.btrfs_async_run_delayed_root 0.36 ±102% +2.3 2.65 ± 22% perf-profile.children.cycles-pp.btrfs_work_helper 0.44 ± 87% +2.4 2.80 ± 22% perf-profile.children.cycles-pp.ret_from_fork 0.44 ± 87% +2.4 2.80 ± 22% perf-profile.children.cycles-pp.kthread 0.38 ±102% +2.4 2.75 ± 22% perf-profile.children.cycles-pp.process_one_work 0.39 ±102% +2.4 2.77 ± 23% perf-profile.children.cycles-pp.worker_thread 0.68 ±100% +5.2 5.88 ± 7% perf-profile.children.cycles-pp.insert_with_overflow 0.76 ±100% +5.8 6.56 ± 7% perf-profile.children.cycles-pp.btrfs_insert_dir_item 1.14 ±100% +8.1 9.27 ± 7% perf-profile.children.cycles-pp.btrfs_lookup_match_dir 1.12 ±100% +8.2 9.31 ± 7% perf-profile.children.cycles-pp.btrfs_lookup_dir_item 1.45 ±100% +10.7 12.17 ± 8% perf-profile.children.cycles-pp.btrfs_insert_inode_ref 2.27 ±100% +16.3 18.56 ± 8% perf-profile.children.cycles-pp.btrfs_del_inode_ref 2.23 ±100% +16.7 18.93 ± 8% perf-profile.children.cycles-pp.btrfs_add_link 3.65 ±100% +25.9 29.60 ± 8% perf-profile.children.cycles-pp.__btrfs_unlink_inode 3.66 ±100% +25.9 29.60 ± 8% perf-profile.children.cycles-pp.btrfs_unlink_inode 3.71 ±100% +26.3 30.02 ± 8% perf-profile.children.cycles-pp.btrfs_unlink 3.72 ±100% +26.4 30.08 ± 8% perf-profile.children.cycles-pp.vfs_unlink 3.74 ±100% +26.5 30.26 ± 8% perf-profile.children.cycles-pp.do_unlinkat 1.12 ± 28% -1.0 0.10 ± 15% perf-profile.self.cycles-pp.read_extent_buffer 0.93 ± 3% -0.6 0.35 ± 8% perf-profile.self.cycles-pp.generic_bin_search 0.67 ± 3% -0.3 0.38 ± 7% perf-profile.self.cycles-pp.down_read 0.72 ± 6% -0.3 0.45 ± 9% perf-profile.self.cycles-pp.btrfs_root_node 0.35 ± 22% -0.2 0.13 ± 10% perf-profile.self.cycles-pp.__radix_tree_lookup 0.86 ± 8% -0.2 0.64 ± 10% perf-profile.self.cycles-pp.free_extent_buffer 0.29 ± 12% -0.2 0.12 ± 5% perf-profile.self.cycles-pp.btrfs_get_64 0.48 ± 9% -0.2 0.32 ± 10% perf-profile.self.cycles-pp.up_read 0.18 ± 29% -0.1 0.06 ± 19% perf-profile.self.cycles-pp.set_extent_buffer_dirty 0.34 ± 8% -0.1 0.23 ± 10% perf-profile.self.cycles-pp.btrfs_comp_cpu_keys 0.19 ± 18% -0.1 0.09 ± 10% perf-profile.self.cycles-pp.btrfs_bin_search 0.27 ± 9% -0.1 0.19 ± 6% perf-profile.self.cycles-pp._raw_spin_lock_irq 0.50 ± 7% -0.1 0.42 ± 8% perf-profile.self.cycles-pp.rwsem_down_read_slowpath 0.11 ± 14% -0.1 0.05 ± 46% perf-profile.self.cycles-pp.unlock_up 0.34 ± 7% -0.1 0.28 ± 8% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 0.18 ± 15% -0.1 0.12 ± 16% perf-profile.self.cycles-pp.btrfs_get_32 0.09 ± 15% -0.0 0.05 ± 47% perf-profile.self.cycles-pp.read_block_for_search 0.12 ± 10% -0.0 0.08 ± 6% perf-profile.self.cycles-pp.release_extent_buffer 0.07 ± 16% -0.0 0.04 ± 71% perf-profile.self.cycles-pp.write_extent_buffer 0.04 ± 71% +0.0 0.08 ± 9% perf-profile.self.cycles-pp.kmem_cache_alloc 0.23 ± 5% +0.0 0.28 ± 6% perf-profile.self.cycles-pp.down_write 0.12 ± 4% +0.1 0.18 ± 16% perf-profile.self.cycles-pp.__list_del_entry_valid 0.22 ± 10% +0.1 0.27 ± 9% perf-profile.self.cycles-pp.osq_unlock 0.06 ± 75% +0.1 0.12 ± 17% perf-profile.self.cycles-pp.mutex_lock 0.01 ±223% +0.1 0.07 ± 15% perf-profile.self.cycles-pp.btrfs_verify_level_key 0.05 ± 72% +0.1 0.12 ± 5% perf-profile.self.cycles-pp.setup_items_for_insert 0.00 +0.1 0.07 ± 8% perf-profile.self.cycles-pp.btrfs_get_alloc_profile 0.00 +0.1 0.07 ± 24% perf-profile.self.cycles-pp.__btrfs_end_transaction 0.03 ±101% +0.1 0.11 ± 20% perf-profile.self.cycles-pp.btrfs_del_items 0.00 +0.1 0.08 ± 20% perf-profile.self.cycles-pp.__d_lookup 0.00 +0.1 0.10 ± 15% perf-profile.self.cycles-pp.link_path_walk 0.04 ±100% +0.1 0.15 ± 8% perf-profile.self.cycles-pp.memcmp 0.03 ±101% +0.1 0.14 ± 16% perf-profile.self.cycles-pp.mutex_unlock 0.00 +0.1 0.11 ± 9% perf-profile.self.cycles-pp.__btrfs_add_delayed_item 0.20 ± 24% +0.1 0.31 ± 9% perf-profile.self.cycles-pp.find_extent_buffer_nolock 0.00 +0.1 0.12 ± 9% perf-profile.self.cycles-pp.strncpy_from_user 0.00 +0.1 0.12 ± 17% perf-profile.self.cycles-pp.lockref_get_not_dead 0.27 ± 28% +0.1 0.40 ± 11% perf-profile.self.cycles-pp.check_setget_bounds 0.23 ± 8% +0.1 0.38 ± 8% perf-profile.self.cycles-pp.memmove 0.16 ± 23% +0.2 0.32 ± 7% perf-profile.self.cycles-pp.up_write 0.76 ± 6% +0.2 0.92 ± 11% perf-profile.self.cycles-pp._raw_spin_lock 0.00 +0.2 0.17 ± 12% perf-profile.self.cycles-pp.btrfs_statfs 0.02 ± 99% +0.2 0.20 ± 12% perf-profile.self.cycles-pp.btrfs_find_name_in_backref 0.30 ± 36% +0.2 0.52 ± 9% perf-profile.self.cycles-pp.btrfs_set_token_32 0.26 ± 36% +0.3 0.51 ± 12% perf-profile.self.cycles-pp.btrfs_get_token_32 0.29 ± 56% +0.3 0.58 ± 25% perf-profile.self.cycles-pp.poll_idle 0.09 ± 99% +0.6 0.73 ± 10% perf-profile.self.cycles-pp.btrfs_get_16 0.10 ±100% +0.8 0.86 ± 12% perf-profile.self.cycles-pp.mutex_spin_on_owner stress-ng.time.file_system_outputs 6e+07 +-------------------------------------------------------------------+ | +.. + + + | 5e+07 |.+. + + : +.+. +. .+. + + .+. + + .+ .+.+.+. .| | + +.+ : + +.. : + + +.+. + + : .+. + | | :.+ : : .+ | 4e+07 |-+ + + + | | | 3e+07 |-+ | | | 2e+07 |-+ | | | | | 1e+07 |-+ | | | 0 +-------------------------------------------------------------------+ stress-ng.link.ops 240 +---------------------------------------------------------------------+ 220 |-+ O O O O O O O O O O O O O | | O O O O O O O O O O O O O O | 200 |-+ | 180 |-+ | 160 |-+ | 140 |-+ | | | 120 |-+ | 100 |-+ | 80 |-+ | 60 |-+ | | .+.. .+. .+. .+.. .+. .+..+. .+.+. .+.| 40 |.+ + +.+.+..+.+.+.+.+.+..+.+ + +.+ + + +.+..+ | 20 +---------------------------------------------------------------------+ stress-ng.link.ops_per_sec 4 +---------------------------------------------------------------------+ | O O O O O O O O O O O O O O O O | 3.5 |-O O O O O O O O O O O O O O O | | | 3 |-+ | | | 2.5 |-+ | | | 2 |-+ | | | 1.5 |-+ | | | 1 |-+ | | .+.. .+. .+. .+.. .+. .+..+. .+.+. .+.| 0.5 +---------------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. --- 0DAY/LKP+ Test Infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation Thanks, Oliver Sang