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Date: Mon, 23 Sep 2019 08:36:58 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Cc: linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
Michal Hocko <mhocko@...e.com>,
Dave Chinner <david@...morbit.com>,
Mel Gorman <mgorman@...e.de>,
Johannes Weiner <hannes@...xchg.org>,
Tejun Heo <tj@...nel.org>,
Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: [mm] e0e7df8d5b: will-it-scale.per_process_ops -7.3% regression
Greeting,
FYI, we noticed a -7.3% regression of will-it-scale.per_process_ops due to commit:
commit: e0e7df8d5b71bf59ad93fe75e662c929b580d805 ("[PATCH v2] mm: implement write-behind policy for sequential file writes")
url: https://github.com/0day-ci/linux/commits/Konstantin-Khlebnikov/mm-implement-write-behind-policy-for-sequential-file-writes/20190920-155606
in testcase: will-it-scale
on test machine: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory
with following parameters:
nr_task: 100%
mode: process
test: open1
cpufreq_governor: performance
test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two.
test-url: https://github.com/antonblanchard/will-it-scale
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
gcc-7/performance/x86_64-rhel-7.6/process/100%/debian-x86_64-2019-05-14.cgz/lkp-csl-2ap4/open1/will-it-scale
commit:
574cc45397 (" drm main pull for 5.4-rc1")
e0e7df8d5b ("mm: implement write-behind policy for sequential file writes")
574cc4539762561d e0e7df8d5b71bf59ad93fe75e66
---------------- ---------------------------
%stddev %change %stddev
\ | \
370456 -7.3% 343238 will-it-scale.per_process_ops
71127653 -7.3% 65901758 will-it-scale.workload
828565 ± 23% +66.8% 1381984 ± 23% cpuidle.C1.time
1499 +1.1% 1515 turbostat.Avg_MHz
163498 ± 5% +26.4% 206691 ± 4% slabinfo.filp.active_slabs
163498 ± 5% +26.4% 206691 ± 4% slabinfo.filp.num_slabs
39055 ± 2% +17.1% 45720 ± 5% meminfo.Inactive
38615 ± 2% +17.3% 45291 ± 5% meminfo.Inactive(anon)
51382 ± 3% +19.6% 61469 ± 7% meminfo.Mapped
5163010 ± 2% +12.7% 5819765 ± 3% meminfo.Memused
2840181 ± 3% +22.5% 3478003 ± 5% meminfo.SUnreclaim
2941874 ± 3% +21.7% 3579791 ± 5% meminfo.Slab
67755 ± 5% +23.8% 83884 ± 3% meminfo.max_used_kB
79719901 +17.3% 93512842 numa-numastat.node0.local_node
79738690 +17.3% 93533079 numa-numastat.node0.numa_hit
81987497 +16.6% 95625946 numa-numastat.node1.local_node
82018695 +16.6% 95652480 numa-numastat.node1.numa_hit
82693483 +15.8% 95762465 numa-numastat.node2.local_node
82705924 +15.8% 95789007 numa-numastat.node2.numa_hit
80329941 +17.1% 94048289 numa-numastat.node3.local_node
80361116 +17.1% 94068512 numa-numastat.node3.numa_hit
9678 ± 2% +17.1% 11334 ± 5% proc-vmstat.nr_inactive_anon
13001 ± 3% +19.2% 15503 ± 7% proc-vmstat.nr_mapped
738232 ± 4% +18.5% 875062 ± 2% proc-vmstat.nr_slab_unreclaimable
9678 ± 2% +17.1% 11334 ± 5% proc-vmstat.nr_zone_inactive_anon
2391 ± 92% -84.5% 369.50 ± 46% proc-vmstat.numa_hint_faults
3.243e+08 +16.8% 3.789e+08 proc-vmstat.numa_hit
3.242e+08 +16.8% 3.788e+08 proc-vmstat.numa_local
1.296e+09 +16.8% 1.514e+09 proc-vmstat.pgalloc_normal
1.296e+09 +16.8% 1.514e+09 proc-vmstat.pgfree
862.61 ± 5% +37.7% 1188 ± 5% sched_debug.cfs_rq:/.exec_clock.stddev
229663 ± 62% +113.3% 489907 ± 29% sched_debug.cfs_rq:/.load.max
491.04 ± 4% -9.5% 444.29 ± 7% sched_debug.cfs_rq:/.nr_spread_over.min
229429 ± 62% +113.4% 489618 ± 29% sched_debug.cfs_rq:/.runnable_weight.max
-1959962 +36.2% -2669681 sched_debug.cfs_rq:/.spread0.min
1416008 ± 2% -13.3% 1227494 ± 5% sched_debug.cpu.avg_idle.avg
1240763 ± 8% -28.2% 891028 ± 18% sched_debug.cpu.avg_idle.stddev
352361 ± 6% -29.6% 248105 ± 25% sched_debug.cpu.max_idle_balance_cost.stddev
-20.00 +51.0% -30.21 sched_debug.cpu.nr_uninterruptible.min
6618 ± 10% -20.8% 5240 ± 8% sched_debug.cpu.ttwu_count.max
1452719 ± 4% +7.2% 1557262 ± 3% numa-meminfo.node0.MemUsed
797565 ± 2% +20.8% 963538 ± 2% numa-meminfo.node0.SUnreclaim
835343 ± 3% +19.6% 998867 ± 2% numa-meminfo.node0.Slab
831114 ± 2% +20.1% 998248 ± 2% numa-meminfo.node1.SUnreclaim
848052 +19.8% 1016069 ± 2% numa-meminfo.node1.Slab
1441558 ± 6% +15.7% 1668466 ± 3% numa-meminfo.node2.MemUsed
879835 ± 2% +20.4% 1059441 numa-meminfo.node2.SUnreclaim
901359 ± 3% +20.3% 1084727 ± 2% numa-meminfo.node2.Slab
1446041 ± 5% +15.5% 1669477 ± 3% numa-meminfo.node3.MemUsed
899442 ± 5% +23.0% 1106354 numa-meminfo.node3.SUnreclaim
924903 ± 5% +22.1% 1129709 numa-meminfo.node3.Slab
198945 +19.8% 238298 ± 2% numa-vmstat.node0.nr_slab_unreclaimable
40181885 +17.3% 47129598 numa-vmstat.node0.numa_hit
40163521 +17.3% 47110122 numa-vmstat.node0.numa_local
208512 +20.9% 252000 ± 2% numa-vmstat.node1.nr_slab_unreclaimable
41144466 +16.7% 48021716 numa-vmstat.node1.numa_hit
41027051 +16.8% 47908675 numa-vmstat.node1.numa_local
220763 ± 2% +21.9% 269115 ± 2% numa-vmstat.node2.nr_slab_unreclaimable
41437805 +16.2% 48167791 numa-vmstat.node2.numa_hit
41338581 +16.2% 48054485 numa-vmstat.node2.numa_local
225216 ± 2% +24.7% 280851 ± 2% numa-vmstat.node3.nr_slab_unreclaimable
40385721 +16.9% 47195289 numa-vmstat.node3.numa_hit
40268228 +16.9% 47088405 numa-vmstat.node3.numa_local
77.00 ± 29% +494.8% 458.00 ±110% interrupts.CPU10.RES:Rescheduling_interrupts
167.25 ± 65% +347.8% 749.00 ± 85% interrupts.CPU103.RES:Rescheduling_interrupts
136.50 ± 42% +309.2% 558.50 ± 85% interrupts.CPU107.RES:Rescheduling_interrupts
132.50 ± 26% +637.5% 977.25 ± 50% interrupts.CPU109.RES:Rescheduling_interrupts
212.50 ± 51% -65.2% 74.00 ± 9% interrupts.CPU115.RES:Rescheduling_interrupts
270.25 ± 20% -77.2% 61.50 ± 10% interrupts.CPU121.RES:Rescheduling_interrupts
184.00 ± 50% -57.5% 78.25 ± 51% interrupts.CPU128.RES:Rescheduling_interrupts
85.25 ± 38% +911.4% 862.25 ±135% interrupts.CPU137.RES:Rescheduling_interrupts
72.25 ± 6% +114.2% 154.75 ± 25% interrupts.CPU147.RES:Rescheduling_interrupts
415.00 ± 75% -69.8% 125.25 ± 59% interrupts.CPU15.RES:Rescheduling_interrupts
928.25 ± 93% -89.8% 94.50 ± 50% interrupts.CPU182.RES:Rescheduling_interrupts
359.75 ± 76% -58.8% 148.25 ± 85% interrupts.CPU19.RES:Rescheduling_interrupts
95.75 ± 30% +103.9% 195.25 ± 48% interrupts.CPU45.RES:Rescheduling_interrupts
60.25 ± 9% +270.5% 223.25 ± 93% interrupts.CPU83.RES:Rescheduling_interrupts
906.75 ±136% -90.5% 85.75 ± 36% interrupts.CPU85.RES:Rescheduling_interrupts
199.25 ± 25% -52.1% 95.50 ± 43% interrupts.CPU90.RES:Rescheduling_interrupts
5192 ± 34% +41.5% 7347 ± 24% interrupts.CPU95.NMI:Non-maskable_interrupts
5192 ± 34% +41.5% 7347 ± 24% interrupts.CPU95.PMI:Performance_monitoring_interrupts
1.75 +26.1% 2.20 perf-stat.i.MPKI
7.975e+10 -6.8% 7.435e+10 perf-stat.i.branch-instructions
3.782e+08 -5.9% 3.558e+08 perf-stat.i.branch-misses
75.36 +0.9 76.29 perf-stat.i.cache-miss-rate%
5.484e+08 +18.8% 6.515e+08 perf-stat.i.cache-misses
7.276e+08 +17.3% 8.539e+08 perf-stat.i.cache-references
1.37 +8.2% 1.48 perf-stat.i.cpi
5.701e+11 +0.7% 5.744e+11 perf-stat.i.cpu-cycles
1040 -15.2% 882.10 perf-stat.i.cycles-between-cache-misses
1.253e+11 -7.2% 1.163e+11 perf-stat.i.dTLB-loads
7.443e+10 -7.2% 6.904e+10 perf-stat.i.dTLB-stores
3.336e+08 +12.6% 3.755e+08 perf-stat.i.iTLB-load-misses
5004598 ± 7% -60.9% 1954451 ± 6% perf-stat.i.iTLB-loads
4.175e+11 -6.9% 3.887e+11 perf-stat.i.instructions
1251 -17.3% 1035 perf-stat.i.instructions-per-iTLB-miss
0.73 -7.6% 0.68 perf-stat.i.ipc
19.77 -1.5 18.31 perf-stat.i.node-load-miss-rate%
5003202 ± 2% +16.5% 5829006 perf-stat.i.node-load-misses
20521507 +28.1% 26283838 perf-stat.i.node-loads
1.84 +0.4 2.28 perf-stat.i.node-store-miss-rate%
1469703 +29.0% 1895783 perf-stat.i.node-store-misses
78304054 +4.0% 81463725 perf-stat.i.node-stores
1.74 +26.1% 2.20 perf-stat.overall.MPKI
75.37 +0.9 76.30 perf-stat.overall.cache-miss-rate%
1.37 +8.2% 1.48 perf-stat.overall.cpi
1039 -15.2% 881.41 perf-stat.overall.cycles-between-cache-misses
1251 -17.3% 1035 perf-stat.overall.instructions-per-iTLB-miss
0.73 -7.6% 0.68 perf-stat.overall.ipc
19.59 -1.5 18.14 perf-stat.overall.node-load-miss-rate%
1.84 +0.4 2.27 perf-stat.overall.node-store-miss-rate%
7.943e+10 -6.8% 7.404e+10 perf-stat.ps.branch-instructions
3.767e+08 -5.9% 3.543e+08 perf-stat.ps.branch-misses
5.465e+08 +18.8% 6.492e+08 perf-stat.ps.cache-misses
7.25e+08 +17.4% 8.508e+08 perf-stat.ps.cache-references
5.68e+11 +0.7% 5.722e+11 perf-stat.ps.cpu-cycles
1.248e+11 -7.2% 1.158e+11 perf-stat.ps.dTLB-loads
7.413e+10 -7.3% 6.874e+10 perf-stat.ps.dTLB-stores
3.322e+08 +12.5% 3.739e+08 perf-stat.ps.iTLB-load-misses
4986239 ± 7% -61.0% 1946378 ± 6% perf-stat.ps.iTLB-loads
4.158e+11 -6.9% 3.87e+11 perf-stat.ps.instructions
4982520 ± 2% +16.5% 5803884 perf-stat.ps.node-load-misses
20448588 +28.1% 26201547 perf-stat.ps.node-loads
1463675 +29.0% 1887791 perf-stat.ps.node-store-misses
77979119 +4.0% 81107191 perf-stat.ps.node-stores
1.25e+14 -6.8% 1.165e+14 perf-stat.total.instructions
10.11 -1.9 8.21 perf-profile.calltrace.cycles-pp.file_free_rcu.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd
17.28 -0.8 16.48 perf-profile.calltrace.cycles-pp.close
9.41 -0.7 8.69 perf-profile.calltrace.cycles-pp.link_path_walk.path_openat.do_filp_open.do_sys_open.do_syscall_64
6.32 -0.7 5.64 perf-profile.calltrace.cycles-pp.do_dentry_open.path_openat.do_filp_open.do_sys_open.do_syscall_64
5.27 -0.5 4.72 perf-profile.calltrace.cycles-pp.__fput.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
13.96 -0.5 13.49 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.close
13.58 -0.4 13.14 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
0.92 -0.3 0.64 perf-profile.calltrace.cycles-pp.__close_fd.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
3.10 -0.2 2.86 perf-profile.calltrace.cycles-pp.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
2.44 -0.2 2.21 perf-profile.calltrace.cycles-pp.walk_component.link_path_walk.path_openat.do_filp_open.do_sys_open
4.02 -0.2 3.80 perf-profile.calltrace.cycles-pp.selinux_inode_permission.security_inode_permission.link_path_walk.path_openat.do_filp_open
1.82 -0.2 1.60 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.open64
9.26 -0.2 9.04 perf-profile.calltrace.cycles-pp.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
2.12 ± 2% -0.2 1.90 perf-profile.calltrace.cycles-pp.lookup_fast.walk_component.link_path_walk.path_openat.do_filp_open
1.03 ± 10% -0.2 0.82 perf-profile.calltrace.cycles-pp.inode_permission.link_path_walk.path_openat.do_filp_open.do_sys_open
2.55 ± 2% -0.2 2.36 ± 3% perf-profile.calltrace.cycles-pp.security_inode_permission.may_open.path_openat.do_filp_open.do_sys_open
1.37 -0.2 1.18 perf-profile.calltrace.cycles-pp.kmem_cache_alloc.getname_flags.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.15 -0.2 0.95 perf-profile.calltrace.cycles-pp.ima_file_check.path_openat.do_filp_open.do_sys_open.do_syscall_64
1.79 -0.2 1.60 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.close
2.41 ± 3% -0.2 2.22 ± 3% perf-profile.calltrace.cycles-pp.selinux_inode_permission.security_inode_permission.may_open.path_openat.do_filp_open
2.88 -0.2 2.71 perf-profile.calltrace.cycles-pp.security_file_open.do_dentry_open.path_openat.do_filp_open.do_sys_open
2.38 -0.2 2.22 perf-profile.calltrace.cycles-pp.security_file_alloc.__alloc_file.alloc_empty_file.path_openat.do_filp_open
4.31 -0.2 4.16 perf-profile.calltrace.cycles-pp.security_inode_permission.link_path_walk.path_openat.do_filp_open.do_sys_open
9.93 -0.1 9.80 perf-profile.calltrace.cycles-pp.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.close
1.63 -0.1 1.50 perf-profile.calltrace.cycles-pp.kmem_cache_alloc.security_file_alloc.__alloc_file.alloc_empty_file.path_openat
1.38 -0.1 1.26 perf-profile.calltrace.cycles-pp.__alloc_fd.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64
5.16 -0.1 5.04 perf-profile.calltrace.cycles-pp.getname_flags.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64
1.13 -0.1 1.02 perf-profile.calltrace.cycles-pp.dput.terminate_walk.path_openat.do_filp_open.do_sys_open
2.26 -0.1 2.15 perf-profile.calltrace.cycles-pp.selinux_file_open.security_file_open.do_dentry_open.path_openat.do_filp_open
0.63 -0.1 0.52 ± 2% perf-profile.calltrace.cycles-pp.__check_heap_object.__check_object_size.strncpy_from_user.getname_flags.do_sys_open
1.29 -0.1 1.18 perf-profile.calltrace.cycles-pp.lookup_fast.path_openat.do_filp_open.do_sys_open.do_syscall_64
1.75 -0.1 1.65 perf-profile.calltrace.cycles-pp.terminate_walk.path_openat.do_filp_open.do_sys_open.do_syscall_64
0.67 -0.1 0.58 perf-profile.calltrace.cycles-pp.kmem_cache_free.__fput.task_work_run.exit_to_usermode_loop.do_syscall_64
1.22 ± 2% -0.1 1.12 perf-profile.calltrace.cycles-pp.avc_has_perm_noaudit.selinux_inode_permission.security_inode_permission.link_path_walk.path_openat
1.21 -0.1 1.12 perf-profile.calltrace.cycles-pp.fput_many.filp_close.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.74 -0.1 0.66 perf-profile.calltrace.cycles-pp.__inode_security_revalidate.selinux_file_open.security_file_open.do_dentry_open.path_openat
0.89 -0.1 0.81 perf-profile.calltrace.cycles-pp.inode_security_rcu.selinux_inode_permission.security_inode_permission.may_open.path_openat
0.79 ± 4% -0.1 0.72 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.76 -0.1 0.70 perf-profile.calltrace.cycles-pp.__inode_security_revalidate.inode_security_rcu.selinux_inode_permission.security_inode_permission.may_open
0.67 ± 3% -0.1 0.61 perf-profile.calltrace.cycles-pp.__d_lookup_rcu.lookup_fast.path_openat.do_filp_open.do_sys_open
0.66 ± 3% -0.1 0.60 perf-profile.calltrace.cycles-pp.inode_permission.may_open.path_openat.do_filp_open.do_sys_open
1.02 -0.1 0.96 perf-profile.calltrace.cycles-pp.path_init.path_openat.do_filp_open.do_sys_open.do_syscall_64
0.81 -0.1 0.75 perf-profile.calltrace.cycles-pp.task_work_add.fput_many.filp_close.__x64_sys_close.do_syscall_64
0.67 -0.0 0.63 perf-profile.calltrace.cycles-pp.rcu_segcblist_enqueue.__call_rcu.task_work_run.exit_to_usermode_loop.do_syscall_64
0.78 -0.0 0.74 perf-profile.calltrace.cycles-pp.__slab_free.kmem_cache_free.rcu_do_batch.rcu_core.__softirqentry_text_start
0.55 -0.0 0.53 perf-profile.calltrace.cycles-pp.selinux_file_alloc_security.security_file_alloc.__alloc_file.alloc_empty_file.path_openat
0.71 +0.1 0.82 perf-profile.calltrace.cycles-pp.memset_erms.kmem_cache_alloc.__alloc_file.alloc_empty_file.path_openat
3.38 +0.1 3.50 perf-profile.calltrace.cycles-pp.strncpy_from_user.getname_flags.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.66 +0.1 1.78 perf-profile.calltrace.cycles-pp.__call_rcu.task_work_run.exit_to_usermode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.70 +0.1 0.84 perf-profile.calltrace.cycles-pp.__virt_addr_valid.__check_object_size.strncpy_from_user.getname_flags.do_sys_open
1.81 +0.4 2.23 perf-profile.calltrace.cycles-pp.__check_object_size.strncpy_from_user.getname_flags.do_sys_open.do_syscall_64
39.47 +0.7 40.17 perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64
0.00 +0.8 0.75 perf-profile.calltrace.cycles-pp.get_page_from_freelist.__alloc_pages_nodemask.new_slab.___slab_alloc.__slab_alloc
38.69 +0.8 39.45 perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_open.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +0.8 0.84 perf-profile.calltrace.cycles-pp.__alloc_pages_nodemask.new_slab.___slab_alloc.__slab_alloc.kmem_cache_alloc
29.90 +0.9 30.79 perf-profile.calltrace.cycles-pp.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork
29.90 +0.9 30.79 perf-profile.calltrace.cycles-pp.run_ksoftirqd.smpboot_thread_fn.kthread.ret_from_fork
29.87 +0.9 30.76 perf-profile.calltrace.cycles-pp.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn
29.88 +0.9 30.78 perf-profile.calltrace.cycles-pp.rcu_core.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn.kthread
29.93 +0.9 30.84 perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork
29.94 +0.9 30.85 perf-profile.calltrace.cycles-pp.ret_from_fork
29.94 +0.9 30.85 perf-profile.calltrace.cycles-pp.kthread.ret_from_fork
0.89 ± 29% +0.9 1.81 perf-profile.calltrace.cycles-pp.setup_object_debug.new_slab.___slab_alloc.__slab_alloc.kmem_cache_alloc
7.25 ± 3% +1.1 8.36 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.free_one_page.__free_pages_ok.unfreeze_partials
7.75 ± 3% +1.1 8.87 perf-profile.calltrace.cycles-pp.__free_pages_ok.unfreeze_partials.put_cpu_partial.kmem_cache_free.rcu_do_batch
7.72 ± 3% +1.1 8.85 perf-profile.calltrace.cycles-pp.free_one_page.__free_pages_ok.unfreeze_partials.put_cpu_partial.kmem_cache_free
7.29 ± 3% +1.1 8.41 perf-profile.calltrace.cycles-pp._raw_spin_lock.free_one_page.__free_pages_ok.unfreeze_partials.put_cpu_partial
9.12 ± 3% +1.1 10.25 perf-profile.calltrace.cycles-pp.kmem_cache_free.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd
7.96 ± 3% +1.1 9.10 perf-profile.calltrace.cycles-pp.put_cpu_partial.kmem_cache_free.rcu_do_batch.rcu_core.__softirqentry_text_start
7.92 ± 3% +1.1 9.07 perf-profile.calltrace.cycles-pp.unfreeze_partials.put_cpu_partial.kmem_cache_free.rcu_do_batch.rcu_core
2.38 +1.5 3.83 perf-profile.calltrace.cycles-pp.new_slab.___slab_alloc.__slab_alloc.kmem_cache_alloc.__alloc_file
10.53 +1.7 12.19 perf-profile.calltrace.cycles-pp.rcu_cblist_dequeue.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd
5.47 +2.2 7.64 perf-profile.calltrace.cycles-pp.kmem_cache_alloc.__alloc_file.alloc_empty_file.path_openat.do_filp_open
3.34 +2.2 5.56 perf-profile.calltrace.cycles-pp.___slab_alloc.__slab_alloc.kmem_cache_alloc.__alloc_file.alloc_empty_file
3.39 +2.3 5.65 perf-profile.calltrace.cycles-pp.__slab_alloc.kmem_cache_alloc.__alloc_file.alloc_empty_file.path_openat
11.39 +2.7 14.08 perf-profile.calltrace.cycles-pp.alloc_empty_file.path_openat.do_filp_open.do_sys_open.do_syscall_64
10.91 +2.7 13.63 perf-profile.calltrace.cycles-pp.__alloc_file.alloc_empty_file.path_openat.do_filp_open.do_sys_open
10.62 -2.1 8.54 perf-profile.children.cycles-pp.file_free_rcu
17.31 -0.8 16.51 perf-profile.children.cycles-pp.close
9.47 -0.7 8.74 perf-profile.children.cycles-pp.link_path_walk
6.37 -0.7 5.68 perf-profile.children.cycles-pp.do_dentry_open
5.48 -0.6 4.90 perf-profile.children.cycles-pp.__fput
6.49 -0.4 6.08 perf-profile.children.cycles-pp.selinux_inode_permission
6.95 -0.3 6.60 perf-profile.children.cycles-pp.security_inode_permission
3.48 -0.3 3.15 perf-profile.children.cycles-pp.lookup_fast
2.38 -0.3 2.09 perf-profile.children.cycles-pp.entry_SYSCALL_64
1.74 ± 5% -0.3 1.46 perf-profile.children.cycles-pp.inode_permission
0.94 -0.3 0.66 perf-profile.children.cycles-pp.__close_fd
3.10 -0.2 2.86 perf-profile.children.cycles-pp.__x64_sys_close
2.27 ± 2% -0.2 2.04 ± 2% perf-profile.children.cycles-pp.dput
2.47 -0.2 2.24 perf-profile.children.cycles-pp.walk_component
2.21 ± 2% -0.2 1.98 perf-profile.children.cycles-pp.___might_sleep
2.24 -0.2 2.02 perf-profile.children.cycles-pp.syscall_return_via_sysret
9.32 -0.2 9.12 perf-profile.children.cycles-pp.task_work_run
1.17 -0.2 0.97 perf-profile.children.cycles-pp.ima_file_check
1.99 -0.2 1.80 perf-profile.children.cycles-pp.__inode_security_revalidate
2.92 -0.2 2.73 perf-profile.children.cycles-pp.security_file_open
0.56 -0.2 0.38 perf-profile.children.cycles-pp.selinux_task_getsecid
0.69 -0.2 0.51 perf-profile.children.cycles-pp.security_task_getsecid
2.40 -0.2 2.24 perf-profile.children.cycles-pp.security_file_alloc
0.20 ± 4% -0.1 0.06 ± 11% perf-profile.children.cycles-pp.try_module_get
1.44 -0.1 1.31 perf-profile.children.cycles-pp.__might_sleep
10.01 -0.1 9.88 perf-profile.children.cycles-pp.exit_to_usermode_loop
1.46 -0.1 1.33 perf-profile.children.cycles-pp.inode_security_rcu
1.00 -0.1 0.87 perf-profile.children.cycles-pp._cond_resched
5.20 -0.1 5.08 perf-profile.children.cycles-pp.getname_flags
1.05 -0.1 0.93 perf-profile.children.cycles-pp.__fsnotify_parent
1.42 -0.1 1.30 perf-profile.children.cycles-pp.fsnotify
1.41 -0.1 1.29 perf-profile.children.cycles-pp.__alloc_fd
2.29 -0.1 2.18 perf-profile.children.cycles-pp.selinux_file_open
0.64 -0.1 0.53 perf-profile.children.cycles-pp.__check_heap_object
1.42 ± 2% -0.1 1.31 ± 2% perf-profile.children.cycles-pp.irq_exit
1.80 -0.1 1.69 perf-profile.children.cycles-pp.terminate_walk
0.33 -0.1 0.23 perf-profile.children.cycles-pp.file_ra_state_init
0.65 ± 3% -0.1 0.56 perf-profile.children.cycles-pp.generic_permission
1.23 -0.1 1.15 perf-profile.children.cycles-pp.fput_many
0.83 ± 3% -0.1 0.74 perf-profile.children.cycles-pp._raw_spin_lock_irq
0.53 -0.1 0.45 ± 2% perf-profile.children.cycles-pp.rcu_all_qs
0.58 ± 5% -0.1 0.51 ± 2% perf-profile.children.cycles-pp.mntput_no_expire
0.75 -0.1 0.69 perf-profile.children.cycles-pp.lockref_put_or_lock
1.03 -0.1 0.97 perf-profile.children.cycles-pp.path_init
0.84 -0.1 0.78 perf-profile.children.cycles-pp.task_work_add
0.14 ± 3% -0.1 0.08 ± 5% perf-profile.children.cycles-pp.ima_file_free
0.26 ± 7% -0.1 0.21 ± 2% perf-profile.children.cycles-pp.path_get
0.83 -0.0 0.78 perf-profile.children.cycles-pp.__slab_free
0.62 -0.0 0.58 perf-profile.children.cycles-pp.percpu_counter_add_batch
0.67 -0.0 0.63 perf-profile.children.cycles-pp.rcu_segcblist_enqueue
0.20 ± 11% -0.0 0.16 ± 2% perf-profile.children.cycles-pp.mntget
0.22 ± 4% -0.0 0.19 ± 3% perf-profile.children.cycles-pp.get_unused_fd_flags
0.10 ± 14% -0.0 0.07 ± 10% perf-profile.children.cycles-pp.close@plt
0.34 ± 2% -0.0 0.31 perf-profile.children.cycles-pp.lockref_get
0.24 -0.0 0.21 ± 2% perf-profile.children.cycles-pp.__x64_sys_open
0.11 ± 8% -0.0 0.08 ± 10% perf-profile.children.cycles-pp.putname
0.18 ± 2% -0.0 0.16 perf-profile.children.cycles-pp.should_failslab
0.55 -0.0 0.53 perf-profile.children.cycles-pp.selinux_file_alloc_security
0.21 ± 3% -0.0 0.19 ± 2% perf-profile.children.cycles-pp.expand_files
0.07 ± 6% -0.0 0.05 perf-profile.children.cycles-pp.module_put
0.12 -0.0 0.10 ± 4% perf-profile.children.cycles-pp.security_file_free
0.17 -0.0 0.15 ± 3% perf-profile.children.cycles-pp.find_next_zero_bit
0.07 ± 5% -0.0 0.06 perf-profile.children.cycles-pp.memset
0.07 ± 5% -0.0 0.06 perf-profile.children.cycles-pp.__mutex_init
0.10 -0.0 0.09 perf-profile.children.cycles-pp.mntput
0.12 +0.0 0.13 ± 3% perf-profile.children.cycles-pp.__list_del_entry_valid
0.12 ± 3% +0.0 0.14 ± 3% perf-profile.children.cycles-pp.discard_slab
0.08 +0.0 0.10 ± 4% perf-profile.children.cycles-pp.kick_process
0.04 ± 57% +0.0 0.07 ± 7% perf-profile.children.cycles-pp.native_irq_return_iret
0.12 ± 4% +0.0 0.15 ± 3% perf-profile.children.cycles-pp.blkcg_maybe_throttle_current
1.31 +0.0 1.34 perf-profile.children.cycles-pp.memset_erms
0.40 +0.0 0.44 perf-profile.children.cycles-pp.lockref_get_not_dead
0.07 ± 6% +0.0 0.11 ± 3% perf-profile.children.cycles-pp.rcu_segcblist_pend_cbs
0.01 ±173% +0.0 0.06 ± 11% perf-profile.children.cycles-pp.native_write_msr
0.27 ± 6% +0.1 0.33 ± 10% perf-profile.children.cycles-pp.ktime_get
0.16 ± 5% +0.1 0.22 ± 4% perf-profile.children.cycles-pp.get_partial_node
0.01 ±173% +0.1 0.07 ± 30% perf-profile.children.cycles-pp.perf_mux_hrtimer_handler
0.00 +0.1 0.07 ± 5% perf-profile.children.cycles-pp.____fput
0.05 +0.1 0.15 ± 3% perf-profile.children.cycles-pp.__mod_zone_page_state
0.12 ± 16% +0.1 0.23 ± 10% perf-profile.children.cycles-pp.ktime_get_update_offsets_now
0.05 ± 8% +0.1 0.16 ± 2% perf-profile.children.cycles-pp.legitimize_links
1.71 +0.1 1.83 perf-profile.children.cycles-pp.__call_rcu
3.40 +0.1 3.52 perf-profile.children.cycles-pp.strncpy_from_user
0.30 ± 2% +0.1 0.43 ± 2% perf-profile.children.cycles-pp.locks_remove_posix
0.72 +0.1 0.86 perf-profile.children.cycles-pp.__virt_addr_valid
0.08 +0.1 0.23 ± 3% perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.84 ± 9% +0.2 1.02 ± 8% perf-profile.children.cycles-pp.hrtimer_interrupt
0.15 ± 3% +0.2 0.38 perf-profile.children.cycles-pp.check_stack_object
0.65 +0.4 1.05 perf-profile.children.cycles-pp.setup_object_debug
0.36 +0.4 0.76 perf-profile.children.cycles-pp.get_page_from_freelist
1.90 +0.4 2.31 perf-profile.children.cycles-pp.__check_object_size
0.39 +0.4 0.84 perf-profile.children.cycles-pp.__alloc_pages_nodemask
39.52 +0.7 40.22 perf-profile.children.cycles-pp.do_filp_open
38.84 +0.8 39.59 perf-profile.children.cycles-pp.path_openat
31.27 +0.8 32.05 perf-profile.children.cycles-pp.rcu_core
31.26 +0.8 32.03 perf-profile.children.cycles-pp.rcu_do_batch
31.31 +0.8 32.09 perf-profile.children.cycles-pp.__softirqentry_text_start
29.90 +0.9 30.79 perf-profile.children.cycles-pp.run_ksoftirqd
29.93 +0.9 30.84 perf-profile.children.cycles-pp.smpboot_thread_fn
29.94 +0.9 30.85 perf-profile.children.cycles-pp.kthread
29.94 +0.9 30.85 perf-profile.children.cycles-pp.ret_from_fork
10.63 ± 2% +1.0 11.61 perf-profile.children.cycles-pp.kmem_cache_free
8.45 ± 3% +1.1 9.57 perf-profile.children.cycles-pp._raw_spin_lock
7.96 ± 3% +1.1 9.11 perf-profile.children.cycles-pp.__free_pages_ok
7.93 ± 3% +1.2 9.08 perf-profile.children.cycles-pp.free_one_page
8.19 ± 3% +1.2 9.36 perf-profile.children.cycles-pp.put_cpu_partial
8.15 ± 3% +1.2 9.32 perf-profile.children.cycles-pp.unfreeze_partials
7.59 ± 3% +1.3 8.89 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
11.12 +1.7 12.83 perf-profile.children.cycles-pp.rcu_cblist_dequeue
2.88 +1.7 4.61 perf-profile.children.cycles-pp.new_slab
8.73 +1.8 10.54 perf-profile.children.cycles-pp.kmem_cache_alloc
3.34 +2.2 5.56 perf-profile.children.cycles-pp.___slab_alloc
3.39 +2.3 5.65 perf-profile.children.cycles-pp.__slab_alloc
11.45 +2.7 14.12 perf-profile.children.cycles-pp.alloc_empty_file
10.98 +2.7 13.70 perf-profile.children.cycles-pp.__alloc_file
10.53 -2.1 8.47 perf-profile.self.cycles-pp.file_free_rcu
2.37 -0.3 2.05 perf-profile.self.cycles-pp.kmem_cache_alloc
1.43 -0.3 1.17 perf-profile.self.cycles-pp.strncpy_from_user
0.50 -0.2 0.26 ± 2% perf-profile.self.cycles-pp.__close_fd
2.22 -0.2 2.00 perf-profile.self.cycles-pp.syscall_return_via_sysret
2.07 ± 2% -0.2 1.86 perf-profile.self.cycles-pp.___might_sleep
1.01 ± 7% -0.2 0.82 perf-profile.self.cycles-pp.inode_permission
1.13 -0.2 0.96 ± 2% perf-profile.self.cycles-pp.entry_SYSCALL_64
3.10 -0.2 2.93 perf-profile.self.cycles-pp.selinux_inode_permission
0.52 -0.2 0.35 perf-profile.self.cycles-pp.selinux_task_getsecid
1.33 -0.1 1.18 ± 2% perf-profile.self.cycles-pp.do_dentry_open
1.55 -0.1 1.42 perf-profile.self.cycles-pp.kmem_cache_free
1.55 -0.1 1.43 perf-profile.self.cycles-pp.link_path_walk
0.17 ± 4% -0.1 0.04 ± 57% perf-profile.self.cycles-pp.try_module_get
1.35 -0.1 1.24 perf-profile.self.cycles-pp.fsnotify
0.96 -0.1 0.85 perf-profile.self.cycles-pp.__fsnotify_parent
1.25 ± 2% -0.1 1.14 perf-profile.self.cycles-pp.__might_sleep
0.87 ± 2% -0.1 0.78 ± 2% perf-profile.self.cycles-pp.lookup_fast
0.79 ± 2% -0.1 0.70 ± 2% perf-profile.self.cycles-pp.do_syscall_64
1.02 -0.1 0.93 perf-profile.self.cycles-pp.do_sys_open
0.30 -0.1 0.22 perf-profile.self.cycles-pp.file_ra_state_init
0.58 -0.1 0.50 perf-profile.self.cycles-pp.__check_heap_object
0.80 ± 3% -0.1 0.72 perf-profile.self.cycles-pp._raw_spin_lock_irq
0.59 ± 2% -0.1 0.52 ± 2% perf-profile.self.cycles-pp.generic_permission
1.17 -0.1 1.09 perf-profile.self.cycles-pp.__fput
0.68 -0.1 0.60 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
0.84 -0.1 0.77 perf-profile.self.cycles-pp.__inode_security_revalidate
0.73 -0.1 0.66 perf-profile.self.cycles-pp.task_work_add
0.39 -0.1 0.32 ± 2% perf-profile.self.cycles-pp.rcu_all_qs
0.54 ± 5% -0.1 0.47 ± 2% perf-profile.self.cycles-pp.mntput_no_expire
0.50 ± 6% -0.1 0.44 ± 4% perf-profile.self.cycles-pp.dput
0.46 -0.1 0.40 perf-profile.self.cycles-pp._cond_resched
0.93 -0.1 0.88 ± 2% perf-profile.self.cycles-pp.close
0.11 ± 4% -0.1 0.06 ± 11% perf-profile.self.cycles-pp.ima_file_free
0.83 -0.1 0.77 perf-profile.self.cycles-pp.__slab_free
0.61 -0.1 0.56 perf-profile.self.cycles-pp.__alloc_fd
0.87 -0.1 0.82 perf-profile.self.cycles-pp._raw_spin_lock
0.69 -0.0 0.64 perf-profile.self.cycles-pp.lockref_put_or_lock
0.67 -0.0 0.62 perf-profile.self.cycles-pp.rcu_segcblist_enqueue
0.46 -0.0 0.41 perf-profile.self.cycles-pp.do_filp_open
0.56 -0.0 0.51 perf-profile.self.cycles-pp.percpu_counter_add_batch
1.05 ± 2% -0.0 1.01 perf-profile.self.cycles-pp.path_openat
0.28 ± 2% -0.0 0.24 ± 4% perf-profile.self.cycles-pp.security_file_open
0.94 ± 2% -0.0 0.90 perf-profile.self.cycles-pp.open64
0.21 ± 6% -0.0 0.17 ± 4% perf-profile.self.cycles-pp.get_unused_fd_flags
0.17 ± 13% -0.0 0.14 ± 3% perf-profile.self.cycles-pp.mntget
0.39 -0.0 0.35 perf-profile.self.cycles-pp.fput_many
0.37 -0.0 0.34 perf-profile.self.cycles-pp.getname_flags
0.43 -0.0 0.41 perf-profile.self.cycles-pp.path_init
0.33 -0.0 0.30 ± 2% perf-profile.self.cycles-pp.lockref_get
0.20 ± 2% -0.0 0.17 perf-profile.self.cycles-pp.filp_close
0.52 -0.0 0.50 perf-profile.self.cycles-pp.selinux_file_alloc_security
0.22 -0.0 0.20 ± 2% perf-profile.self.cycles-pp.__x64_sys_open
0.28 ± 2% -0.0 0.26 perf-profile.self.cycles-pp.inode_security_rcu
0.19 ± 4% -0.0 0.17 ± 2% perf-profile.self.cycles-pp.expand_files
0.09 ± 9% -0.0 0.07 ± 6% perf-profile.self.cycles-pp.putname
0.10 -0.0 0.08 ± 5% perf-profile.self.cycles-pp.security_file_free
0.15 ± 3% -0.0 0.14 ± 3% perf-profile.self.cycles-pp.find_next_zero_bit
0.12 ± 3% -0.0 0.11 ± 4% perf-profile.self.cycles-pp.nd_jump_root
0.08 -0.0 0.07 perf-profile.self.cycles-pp.fd_install
0.06 -0.0 0.05 perf-profile.self.cycles-pp.path_get
0.12 +0.0 0.13 ± 3% perf-profile.self.cycles-pp.__list_del_entry_valid
0.07 ± 5% +0.0 0.09 perf-profile.self.cycles-pp.get_partial_node
0.12 ± 3% +0.0 0.14 ± 3% perf-profile.self.cycles-pp.discard_slab
0.11 +0.0 0.13 ± 3% perf-profile.self.cycles-pp.blkcg_maybe_throttle_current
0.06 +0.0 0.08 ± 5% perf-profile.self.cycles-pp.kick_process
0.28 ± 2% +0.0 0.30 perf-profile.self.cycles-pp.__x64_sys_close
0.04 ± 57% +0.0 0.07 ± 7% perf-profile.self.cycles-pp.native_irq_return_iret
0.39 +0.0 0.42 perf-profile.self.cycles-pp.lockref_get_not_dead
0.53 +0.0 0.57 perf-profile.self.cycles-pp.exit_to_usermode_loop
0.06 ± 7% +0.0 0.10 ± 4% perf-profile.self.cycles-pp.rcu_segcblist_pend_cbs
0.01 ±173% +0.0 0.06 ± 11% perf-profile.self.cycles-pp.native_write_msr
0.28 +0.0 0.33 perf-profile.self.cycles-pp.terminate_walk
0.27 ± 5% +0.1 0.32 ± 11% perf-profile.self.cycles-pp.ktime_get
0.00 +0.1 0.05 ± 9% perf-profile.self.cycles-pp._raw_spin_lock_irqsave
0.43 ± 5% +0.1 0.49 ± 3% perf-profile.self.cycles-pp.security_inode_permission
0.00 +0.1 0.06 ± 6% perf-profile.self.cycles-pp.____fput
0.00 +0.1 0.08 perf-profile.self.cycles-pp.__alloc_pages_nodemask
0.05 +0.1 0.15 ± 3% perf-profile.self.cycles-pp.__mod_zone_page_state
0.25 ± 3% +0.1 0.35 ± 2% perf-profile.self.cycles-pp.locks_remove_posix
0.12 ± 17% +0.1 0.23 ± 11% perf-profile.self.cycles-pp.ktime_get_update_offsets_now
0.14 +0.1 0.25 perf-profile.self.cycles-pp.setup_object_debug
0.93 +0.1 1.04 perf-profile.self.cycles-pp.__call_rcu
0.46 +0.1 0.58 perf-profile.self.cycles-pp.__check_object_size
0.13 ± 3% +0.1 0.26 ± 3% perf-profile.self.cycles-pp.get_page_from_freelist
0.00 +0.1 0.13 ± 3% perf-profile.self.cycles-pp.legitimize_links
0.68 +0.1 0.81 perf-profile.self.cycles-pp.__virt_addr_valid
0.40 ± 11% +0.2 0.58 perf-profile.self.cycles-pp.may_open
0.12 +0.2 0.31 perf-profile.self.cycles-pp.check_stack_object
0.90 +0.3 1.22 perf-profile.self.cycles-pp.task_work_run
0.30 +0.4 0.73 perf-profile.self.cycles-pp.___slab_alloc
2.88 +0.7 3.59 perf-profile.self.cycles-pp.__alloc_file
2.27 +1.1 3.38 perf-profile.self.cycles-pp.new_slab
7.59 ± 3% +1.3 8.89 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
11.04 +1.7 12.73 perf-profile.self.cycles-pp.rcu_cblist_dequeue
will-it-scale.per_process_ops
385000 +-+----------------------------------------------------------------+
| .+ .+. .+ |
380000 +-+.++ : +.++.+ +.++.+ : |
375000 +-+ : + : |
| +.+ .+.++.+ ++. .+.+.+ .+.+.+ .+.|
370000 +-+ +.+ +.+.++ + + |
365000 +-+ |
| |
360000 +-+ |
355000 +-+ |
| |
350000 +-+ |
345000 O-+ OO O O OO O O OO O O O |
| O O O O O OO O O |
340000 +-+----------------------------------------------------------------+
will-it-scale.workload
7.4e+07 +-+---------------------------------------------------------------+
| .+ .+ .+ |
7.3e+07 +-++.+ : ++.+.+ +.+.++ : |
7.2e+07 +-+ : + : |
| ++. .++.+.+ +.+ +.+.+.++.+.+. +.|
7.1e+07 +-+ +.+ +.+.+.+ + |
7e+07 +-+ |
| |
6.9e+07 +-+ |
6.8e+07 +-+ |
| |
6.7e+07 +-+ O O |
6.6e+07 O-OO O O OO O OO O O O O O O O |
| O O O O |
6.5e+07 +-+---------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Rong Chen
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