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Open Source and information security mailing list archives
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Date: Tue, 27 Nov 2018 14:01:02 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: NeilBrown <neilb@...e.com>
Cc: Jeff Layton <jlayton@...nel.org>,
"J. Bruce Fields" <bfields@...hat.com>,
LKML <linux-kernel@...r.kernel.org>,
Jeff Layton <jlayton@...hat.com>, lkp@...org
Subject: [LKP] [fs/locks] 83b381078b: will-it-scale.per_thread_ops -62.5%
regression
Greeting,
FYI, we noticed a -62.5% regression of will-it-scale.per_thread_ops due to commit:
commit: 83b381078b5ecab098ebf6bc9548bb32af1dbf31 ("fs/locks: always delete_block after waiting.")
https://git.kernel.org/cgit/linux/kernel/git/jlayton/linux.git locks-next
in testcase: will-it-scale
on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G memory
with following parameters:
nr_task: 16
mode: thread
test: lock1
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
In addition to that, the commit also has significant impact on the following tests:
+------------------+-----------------------------------------------------------------------+
| testcase: change | will-it-scale: will-it-scale.per_thread_ops -65.5% regression |
| test machine | 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory |
| test parameters | cpufreq_governor=performance |
| | mode=thread |
| | nr_task=100% |
| | test=lock1 |
| | ucode=0x3d |
+------------------+-----------------------------------------------------------------------+
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-7.2/thread/16/debian-x86_64-2018-04-03.cgz/lkp-bdw-ep3d/lock1/will-it-scale
commit:
c5420ab794 ("fs/locks: allow a lock request to block other requests.")
83b381078b ("fs/locks: always delete_block after waiting.")
c5420ab794c1a3a9 83b381078b5ecab098ebf6bc95
---------------- --------------------------
%stddev %change %stddev
\ | \
372966 ± 7% -62.5% 140024 will-it-scale.per_thread_ops
4601 +2.9% 4736 will-it-scale.time.system_time
213.95 ± 6% -62.9% 79.47 will-it-scale.time.user_time
5967471 ± 7% -62.5% 2240400 will-it-scale.workload
681.35 +1.1% 688.54 boot-time.idle
3.03 ± 6% -1.8 1.20 ± 2% mpstat.cpu.usr%
230349 ± 21% -26.6% 169168 ± 26% softirqs.RCU
130.28 -2.5% 126.96 turbostat.PkgWatt
8.77 ± 2% -3.0% 8.51 turbostat.RAMWatt
787.75 ± 21% +24.3% 978.96 ± 4% sched_debug.cfs_rq:/.util_est_enqueued.max
16345 ± 8% -45.2% 8953 ± 17% sched_debug.cpu.ttwu_local.max
3555 ± 10% -28.9% 2527 ± 8% sched_debug.cpu.ttwu_local.stddev
1.357e+12 ± 3% -22.5% 1.052e+12 perf-stat.branch-instructions
0.60 -0.2 0.44 ± 3% perf-stat.branch-miss-rate%
8.095e+09 ± 3% -42.7% 4.642e+09 ± 3% perf-stat.branch-misses
44.72 -1.3 43.45 perf-stat.cache-miss-rate%
1.006e+10 ± 19% -20.3% 8.018e+09 ± 2% perf-stat.cache-misses
2.252e+10 ± 19% -18.1% 1.845e+10 ± 2% perf-stat.cache-references
2.43 ± 3% +36.2% 3.31 perf-stat.cpi
0.00 ± 10% +0.0 0.00 ± 8% perf-stat.dTLB-load-miss-rate%
1.699e+12 ± 3% -30.3% 1.185e+12 perf-stat.dTLB-loads
8.194e+11 ± 7% -59.3% 3.337e+11 perf-stat.dTLB-stores
4.037e+09 ± 4% -65.3% 1.403e+09 perf-stat.iTLB-load-misses
5.873e+08 ± 12% -62.2% 2.223e+08 ± 17% perf-stat.iTLB-loads
6.141e+12 ± 3% -26.9% 4.489e+12 perf-stat.instructions
1522 ± 2% +110.3% 3201 perf-stat.instructions-per-iTLB-miss
0.41 ± 3% -26.6% 0.30 perf-stat.ipc
82.22 -2.5 79.75 perf-stat.node-store-miss-rate%
2.253e+09 ± 2% -16.0% 1.894e+09 perf-stat.node-store-misses
1031848 ± 3% +94.2% 2003878 perf-stat.path-length
40.20 ± 29% -39.2 0.96 ± 8% perf-profile.calltrace.cycles-pp._raw_spin_lock.fcntl_setlk.do_fcntl.__x64_sys_fcntl.do_syscall_64
38.31 ± 29% -38.3 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.fcntl_setlk.do_fcntl.__x64_sys_fcntl
2.46 ± 4% -1.5 0.94 ± 11% perf-profile.calltrace.cycles-pp.locks_alloc_lock.posix_lock_inode.do_lock_file_wait.fcntl_setlk.do_fcntl
2.26 ± 5% -1.4 0.83 ± 8% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64
2.15 ± 5% -1.3 0.82 ± 12% perf-profile.calltrace.cycles-pp.kmem_cache_alloc.locks_alloc_lock.posix_lock_inode.do_lock_file_wait.fcntl_setlk
1.85 ± 30% -1.3 0.54 ± 3% perf-profile.calltrace.cycles-pp.fput.__x64_sys_fcntl.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.07 ± 6% -1.3 0.77 ± 4% perf-profile.calltrace.cycles-pp.syscall_return_via_sysret
1.20 ± 3% -0.9 0.27 ±100% perf-profile.calltrace.cycles-pp.locks_alloc_lock.fcntl_setlk.do_fcntl.__x64_sys_fcntl.do_syscall_64
67.78 +8.7 76.49 ± 8% perf-profile.calltrace.cycles-pp.do_fcntl.__x64_sys_fcntl.do_syscall_64.entry_SYSCALL_64_after_hwframe
66.76 +9.3 76.09 ± 8% perf-profile.calltrace.cycles-pp.fcntl_setlk.do_fcntl.__x64_sys_fcntl.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +46.1 46.09 ± 8% perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.locks_delete_block.do_lock_file_wait.fcntl_setlk
0.00 +47.0 47.01 ± 8% perf-profile.calltrace.cycles-pp._raw_spin_lock.locks_delete_block.do_lock_file_wait.fcntl_setlk.do_fcntl
0.00 +47.1 47.10 ± 8% perf-profile.calltrace.cycles-pp.locks_delete_block.do_lock_file_wait.fcntl_setlk.do_fcntl.__x64_sys_fcntl
24.15 ± 46% +49.8 73.98 ± 8% perf-profile.calltrace.cycles-pp.do_lock_file_wait.fcntl_setlk.do_fcntl.__x64_sys_fcntl.do_syscall_64
3.74 ± 4% -2.3 1.44 ± 11% perf-profile.children.cycles-pp.locks_alloc_lock
3.28 ± 4% -2.0 1.27 ± 12% perf-profile.children.cycles-pp.kmem_cache_alloc
2.42 ± 6% -1.5 0.90 ± 4% perf-profile.children.cycles-pp.syscall_return_via_sysret
2.26 ± 5% -1.4 0.83 ± 8% perf-profile.children.cycles-pp.entry_SYSCALL_64
1.87 ± 30% -1.3 0.55 ± 3% perf-profile.children.cycles-pp.fput
1.37 ± 29% -1.1 0.29 ± 9% perf-profile.children.cycles-pp.__fget_light
1.58 ± 5% -1.0 0.60 ± 6% perf-profile.children.cycles-pp.file_has_perm
1.07 ± 30% -0.9 0.22 ± 11% perf-profile.children.cycles-pp.__fget
1.17 ± 6% -0.7 0.45 ± 14% perf-profile.children.cycles-pp.memset_erms
1.08 ± 4% -0.7 0.42 ± 11% perf-profile.children.cycles-pp.security_file_lock
1.01 ± 7% -0.6 0.40 ± 7% perf-profile.children.cycles-pp.security_file_fcntl
0.89 ± 3% -0.5 0.34 ± 7% perf-profile.children.cycles-pp._copy_from_user
0.85 ± 4% -0.5 0.30 ± 7% perf-profile.children.cycles-pp.avc_has_perm
0.94 ± 9% -0.4 0.54 ± 15% perf-profile.children.cycles-pp.kmem_cache_free
0.66 ± 4% -0.4 0.26 ± 13% perf-profile.children.cycles-pp.___might_sleep
0.40 ± 2% -0.2 0.15 ± 3% perf-profile.children.cycles-pp.copy_user_generic_unrolled
0.40 ± 3% -0.2 0.17 ± 18% perf-profile.children.cycles-pp.__might_sleep
0.37 ± 7% -0.2 0.14 ± 11% perf-profile.children.cycles-pp.locks_dispose_list
0.33 ± 4% -0.2 0.12 ± 7% perf-profile.children.cycles-pp.locks_delete_lock_ctx
0.27 ± 5% -0.2 0.10 ± 12% perf-profile.children.cycles-pp._cond_resched
0.28 -0.2 0.12 ± 10% perf-profile.children.cycles-pp.selinux_file_lock
0.26 ± 6% -0.1 0.11 ± 13% perf-profile.children.cycles-pp.__might_fault
0.23 ± 6% -0.1 0.08 ± 5% perf-profile.children.cycles-pp.inode_has_perm
0.22 ± 6% -0.1 0.08 ± 13% perf-profile.children.cycles-pp.locks_unlink_lock_ctx
0.14 ± 7% -0.1 0.03 ±100% perf-profile.children.cycles-pp.rcu_all_qs
0.16 ± 7% -0.1 0.06 ± 11% perf-profile.children.cycles-pp.copy_user_enhanced_fast_string
0.12 ± 3% -0.1 0.03 ±100% perf-profile.children.cycles-pp.should_failslab
0.13 ± 3% -0.1 0.05 ± 8% perf-profile.children.cycles-pp.__x86_indirect_thunk_rax
0.10 ± 17% -0.1 0.03 ±100% perf-profile.children.cycles-pp.selinux_file_fcntl
0.11 ± 4% -0.1 0.04 ± 57% perf-profile.children.cycles-pp.flock64_to_posix_lock
67.83 +8.7 76.51 ± 8% perf-profile.children.cycles-pp.do_fcntl
66.80 +9.3 76.11 ± 8% perf-profile.children.cycles-pp.fcntl_setlk
58.30 +14.2 72.52 ± 8% perf-profile.children.cycles-pp._raw_spin_lock
53.61 ± 2% +15.5 69.06 ± 8% perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
0.00 +47.1 47.10 ± 8% perf-profile.children.cycles-pp.locks_delete_block
24.19 ± 46% +49.8 73.99 ± 8% perf-profile.children.cycles-pp.do_lock_file_wait
2.42 ± 6% -1.5 0.90 ± 4% perf-profile.self.cycles-pp.syscall_return_via_sysret
2.26 ± 5% -1.4 0.83 ± 8% perf-profile.self.cycles-pp.entry_SYSCALL_64
1.86 ± 30% -1.3 0.55 ± 3% perf-profile.self.cycles-pp.fput
4.66 ± 8% -1.2 3.45 ± 7% perf-profile.self.cycles-pp._raw_spin_lock
1.06 ± 31% -0.8 0.21 ± 14% perf-profile.self.cycles-pp.__fget
1.22 ± 4% -0.8 0.46 ± 11% perf-profile.self.cycles-pp.kmem_cache_alloc
1.14 ± 5% -0.7 0.43 ± 14% perf-profile.self.cycles-pp.memset_erms
0.84 ± 3% -0.5 0.30 ± 7% perf-profile.self.cycles-pp.avc_has_perm
0.91 ± 9% -0.4 0.46 ± 13% perf-profile.self.cycles-pp.kmem_cache_free
0.65 ± 13% -0.4 0.21 ± 5% perf-profile.self.cycles-pp.fcntl_setlk
0.63 ± 5% -0.4 0.26 ± 12% perf-profile.self.cycles-pp.___might_sleep
0.62 ± 5% -0.4 0.24 ± 14% perf-profile.self.cycles-pp.posix_lock_inode
0.48 ± 9% -0.3 0.20 ± 11% perf-profile.self.cycles-pp.file_has_perm
0.40 ± 4% -0.3 0.14 ± 8% perf-profile.self.cycles-pp.locks_alloc_lock
0.41 ± 7% -0.3 0.15 ± 13% perf-profile.self.cycles-pp.__x64_sys_fcntl
0.37 -0.2 0.14 ± 6% perf-profile.self.cycles-pp.copy_user_generic_unrolled
0.30 ± 47% -0.2 0.08 ± 10% perf-profile.self.cycles-pp.__fget_light
0.36 ± 4% -0.2 0.15 ± 18% perf-profile.self.cycles-pp.__might_sleep
0.28 ± 4% -0.2 0.11 ± 4% perf-profile.self.cycles-pp.do_syscall_64
0.25 ± 3% -0.1 0.11 ± 11% perf-profile.self.cycles-pp.selinux_file_lock
0.20 ± 7% -0.1 0.07 ± 17% perf-profile.self.cycles-pp.do_lock_file_wait
0.21 ± 11% -0.1 0.08 ± 10% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
0.20 ± 7% -0.1 0.08 ± 5% perf-profile.self.cycles-pp.inode_has_perm
0.19 ± 3% -0.1 0.07 ± 5% perf-profile.self.cycles-pp.do_fcntl
0.15 ± 8% -0.1 0.05 ± 8% perf-profile.self.cycles-pp.copy_user_enhanced_fast_string
0.11 ± 4% -0.1 0.03 ±100% perf-profile.self.cycles-pp._copy_from_user
0.12 ± 4% -0.1 0.04 ± 58% perf-profile.self.cycles-pp._cond_resched
0.20 ± 11% -0.1 0.15 ± 16% perf-profile.self.cycles-pp.locks_free_lock
53.42 ± 2% +15.4 68.84 ± 8% perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
will-it-scale.per_thread_ops
450000 +-+----------------------------------------------------------------+
| |
400000 +-+ +..+.. .+..+.. .+..+..+...+..+..+.. +.. .+.. ..|
350000 +-+ .. +. +. .. +. +..+ |
| + + + : |
300000 +-+ : : |
250000 +-+ : : |
| : : |
200000 +-+ : : |
150000 +-+ : : |
O O O O O O O O O O O O O O O O O :O: O O O O O
100000 +-+ : : |
50000 +-+ : : |
| : |
0 +-+----------------------------------------------------------------+
will-it-scale.workload
7e+06 +-+-----------------------------------------------------------------+
| +...+.. .+..+..+ + +.. |
6e+06 +-+ +..+.. .. .+..+..+. + + + .. ..|
| .. + +. + + + + +..+ |
5e+06 +-++ + + : |
| : : |
4e+06 +-+ : : |
| : : |
3e+06 +-+ : : |
| O O : : O O |
2e+06 O-+O O O O O O O O O O O O O O : O: O O O
| : : |
1e+06 +-+ : : |
| : |
0 +-+-----------------------------------------------------------------+
will-it-scale.time.user_time
250 +-+-------------------------------------------------------------------+
| .+.. .+.. +.. |
|.. +...+.. .+. .+...+..+..+. +.. +.. .. . ..|
200 +-+ .. +. +. . .. + +..+ |
| + + + : |
| : : |
150 +-+ : : |
| : : |
100 +-+ : : |
| O O : : |
O O O O O O O O O O O O O O O :O: O O O O O
50 +-+ : : |
| : : |
| : |
0 +-+-------------------------------------------------------------------+
will-it-scale.time.system_time
5000 +-+------------------------------------------------------------------+
4500 O-+O..O..O...O..O..O..O..O..O..O...O..O..O..O..O..O O O...O..O..O..O
| : : |
4000 +-+ : : |
3500 +-+ : : |
| : : |
3000 +-+ : : |
2500 +-+ : : |
2000 +-+ : : |
| : : |
1500 +-+ : : |
1000 +-+ : : |
| : |
500 +-+ : |
0 +-+------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
***************************************************************************************************
lkp-hsw-ep4: 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode:
gcc-7/performance/x86_64-rhel-7.2/thread/100%/debian-x86_64-2018-04-03.cgz/lkp-hsw-ep4/lock1/will-it-scale/0x3d
commit:
c5420ab794 ("fs/locks: allow a lock request to block other requests.")
83b381078b ("fs/locks: always delete_block after waiting.")
c5420ab794c1a3a9 83b381078b5ecab098ebf6bc95
---------------- --------------------------
%stddev %change %stddev
\ | \
81037 -65.5% 27921 will-it-scale.per_thread_ops
138477 -2.6% 134943 will-it-scale.time.involuntary_context_switches
7836 +1.6% 7964 will-it-scale.time.maximum_resident_set_size
268.13 ± 2% -64.8% 94.41 will-it-scale.time.user_time
5834761 -65.5% 2010357 will-it-scale.workload
1.26 ± 2% -0.8 0.45 ± 4% mpstat.cpu.usr%
97.58 ± 8% -15.7% 82.29 ± 5% sched_debug.cpu.ttwu_count.min
256.50 -2.3% 250.49 ± 2% turbostat.PkgWatt
1121 -5.2% 1062 vmstat.system.cs
31.52 ± 10% -12.2% 27.67 ± 10% boot-time.boot
25.82 ± 15% -12.5% 22.59 ± 12% boot-time.dhcp
1794 ± 11% -15.4% 1517 ± 9% boot-time.idle
111720 ± 26% +34.7% 150535 ± 9% numa-meminfo.node0.Active
111718 ± 26% +34.7% 150533 ± 9% numa-meminfo.node0.Active(anon)
91357 ± 24% +44.8% 132283 ± 15% numa-meminfo.node0.AnonPages
27936 ± 26% +34.7% 37633 ± 9% numa-vmstat.node0.nr_active_anon
22830 ± 24% +44.8% 33067 ± 15% numa-vmstat.node0.nr_anon_pages
27936 ± 26% +34.7% 37633 ± 9% numa-vmstat.node0.nr_zone_active_anon
1482 ± 9% +11.1% 1647 ± 5% slabinfo.UNIX.active_objs
1482 ± 9% +11.1% 1647 ± 5% slabinfo.UNIX.num_objs
399.00 ± 5% -28.9% 283.50 ± 6% slabinfo.kmem_cache.active_objs
399.00 ± 5% -28.9% 283.50 ± 6% slabinfo.kmem_cache.num_objs
686.00 ± 4% -25.7% 510.00 ± 5% slabinfo.kmem_cache_node.active_objs
736.00 ± 4% -23.9% 560.00 ± 4% slabinfo.kmem_cache_node.num_objs
651.00 ± 7% -14.5% 556.50 ± 8% slabinfo.mnt_cache.active_objs
651.00 ± 7% -14.5% 556.50 ± 8% slabinfo.mnt_cache.num_objs
1097 ± 12% +19.6% 1311 ± 5% slabinfo.task_group.active_objs
1097 ± 12% +19.6% 1311 ± 5% slabinfo.task_group.num_objs
3.766e+12 -8.2% 3.457e+12 perf-stat.branch-instructions
0.26 -0.1 0.16 ± 4% perf-stat.branch-miss-rate%
9.894e+09 -43.1% 5.628e+09 ± 4% perf-stat.branch-misses
4.835e+09 ± 4% -13.0% 4.208e+09 perf-stat.cache-misses
1.155e+10 ± 4% -11.8% 1.019e+10 ± 4% perf-stat.cache-references
3.77 +12.4% 4.24 perf-stat.cpi
4.104e+12 -12.7% 3.582e+12 perf-stat.dTLB-loads
0.01 ± 55% +0.0 0.01 ± 11% perf-stat.dTLB-store-miss-rate%
8.153e+11 -61.3% 3.158e+11 perf-stat.dTLB-stores
3.104e+09 ± 3% -63.0% 1.148e+09 ± 5% perf-stat.iTLB-load-misses
4.672e+08 ± 16% -60.7% 1.836e+08 ± 16% perf-stat.iTLB-loads
1.578e+13 -10.6% 1.41e+13 perf-stat.instructions
5087 ± 3% +142.2% 12320 ± 5% perf-stat.instructions-per-iTLB-miss
0.27 -11.0% 0.24 perf-stat.ipc
98.73 +1.2 99.89 perf-stat.node-load-miss-rate%
28488920 ± 58% -92.2% 2213871 ± 20% perf-stat.node-loads
77.85 -6.5 71.39 perf-stat.node-store-miss-rate%
2.072e+09 ± 2% -27.5% 1.503e+09 perf-stat.node-store-misses
2704766 +159.3% 7014271 perf-stat.path-length
62.34 ± 35% -62.3 0.00 perf-profile.calltrace.cycles-pp._raw_spin_lock.fcntl_setlk.do_fcntl.__x64_sys_fcntl.do_syscall_64
61.88 ± 35% -61.9 0.00 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.fcntl_setlk.do_fcntl.__x64_sys_fcntl
98.52 +0.9 99.42 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe
98.48 +0.9 99.39 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe
98.32 +1.0 99.34 perf-profile.calltrace.cycles-pp.__x64_sys_fcntl.do_syscall_64.entry_SYSCALL_64_after_hwframe
97.16 +1.8 99.00 perf-profile.calltrace.cycles-pp.do_fcntl.__x64_sys_fcntl.do_syscall_64.entry_SYSCALL_64_after_hwframe
96.91 +2.0 98.91 perf-profile.calltrace.cycles-pp.fcntl_setlk.do_fcntl.__x64_sys_fcntl.do_syscall_64.entry_SYSCALL_64_after_hwframe
33.77 ± 65% +64.4 98.20 perf-profile.calltrace.cycles-pp.do_lock_file_wait.fcntl_setlk.do_fcntl.__x64_sys_fcntl.do_syscall_64
0.00 +64.5 64.55 perf-profile.calltrace.cycles-pp.native_queued_spin_lock_slowpath._raw_spin_lock.locks_delete_block.do_lock_file_wait.fcntl_setlk
0.00 +64.9 64.89 perf-profile.calltrace.cycles-pp._raw_spin_lock.locks_delete_block.do_lock_file_wait.fcntl_setlk.do_fcntl
0.00 +64.9 64.92 perf-profile.calltrace.cycles-pp.locks_delete_block.do_lock_file_wait.fcntl_setlk.do_fcntl.__x64_sys_fcntl
1.37 ± 4% -0.8 0.53 perf-profile.children.cycles-pp.locks_alloc_lock
1.19 ± 4% -0.7 0.46 perf-profile.children.cycles-pp.kmem_cache_alloc
0.73 ± 6% -0.5 0.28 ± 3% perf-profile.children.cycles-pp.syscall_return_via_sysret
0.66 ± 6% -0.4 0.24 ± 4% perf-profile.children.cycles-pp.entry_SYSCALL_64
0.44 ± 24% -0.4 0.07 perf-profile.children.cycles-pp.fput
0.49 ± 6% -0.3 0.18 ± 2% perf-profile.children.cycles-pp.file_has_perm
0.40 ± 5% -0.2 0.15 perf-profile.children.cycles-pp.memset_erms
0.36 ± 7% -0.2 0.12 ± 4% perf-profile.children.cycles-pp.security_file_lock
0.31 ± 9% -0.2 0.12 ± 3% perf-profile.children.cycles-pp.security_file_fcntl
0.28 ± 15% -0.2 0.09 ± 4% perf-profile.children.cycles-pp.__fget_light
0.25 ± 6% -0.2 0.09 perf-profile.children.cycles-pp.avc_has_perm
0.25 ± 5% -0.2 0.10 ± 5% perf-profile.children.cycles-pp.___might_sleep
0.20 ± 3% -0.1 0.07 ± 5% perf-profile.children.cycles-pp.__fget
0.19 ± 11% -0.1 0.07 ± 6% perf-profile.children.cycles-pp._copy_from_user
0.15 ± 9% -0.1 0.06 perf-profile.children.cycles-pp.__might_sleep
0.13 ± 8% -0.1 0.04 ± 57% perf-profile.children.cycles-pp.locks_dispose_list
0.29 ± 7% -0.1 0.24 ± 5% perf-profile.children.cycles-pp.kmem_cache_free
0.13 ± 9% -0.0 0.10 ± 8% perf-profile.children.cycles-pp.locks_free_lock
0.36 ± 3% +0.0 0.39 perf-profile.children.cycles-pp.apic_timer_interrupt
98.56 +0.9 99.44 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
98.49 +0.9 99.42 perf-profile.children.cycles-pp.do_syscall_64
98.34 +1.0 99.34 perf-profile.children.cycles-pp.__x64_sys_fcntl
97.17 +1.8 99.00 perf-profile.children.cycles-pp.do_fcntl
96.93 +2.0 98.92 perf-profile.children.cycles-pp.fcntl_setlk
93.97 +3.7 97.63 perf-profile.children.cycles-pp._raw_spin_lock
92.80 +4.0 96.79 perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
33.79 ± 65% +64.4 98.20 perf-profile.children.cycles-pp.do_lock_file_wait
0.00 +64.9 64.93 perf-profile.children.cycles-pp.locks_delete_block
0.73 ± 6% -0.5 0.28 ± 3% perf-profile.self.cycles-pp.syscall_return_via_sysret
0.66 ± 6% -0.4 0.24 ± 4% perf-profile.self.cycles-pp.entry_SYSCALL_64
0.44 ± 24% -0.4 0.07 ± 6% perf-profile.self.cycles-pp.fput
1.17 ± 14% -0.3 0.84 ± 2% perf-profile.self.cycles-pp._raw_spin_lock
0.45 ± 5% -0.3 0.17 ± 4% perf-profile.self.cycles-pp.kmem_cache_alloc
0.39 ± 5% -0.2 0.15 ± 3% perf-profile.self.cycles-pp.memset_erms
0.24 ± 3% -0.2 0.08 ± 5% perf-profile.self.cycles-pp.posix_lock_inode
0.24 ± 6% -0.2 0.09 ± 4% perf-profile.self.cycles-pp.avc_has_perm
0.24 ± 6% -0.2 0.09 perf-profile.self.cycles-pp.___might_sleep
0.19 ± 2% -0.1 0.07 perf-profile.self.cycles-pp.__fget
0.17 ± 7% -0.1 0.06 ± 6% perf-profile.self.cycles-pp.locks_alloc_lock
0.16 ± 12% -0.1 0.06 ± 7% perf-profile.self.cycles-pp.file_has_perm
0.17 ± 7% -0.1 0.07 ± 10% perf-profile.self.cycles-pp.fcntl_setlk
0.12 ± 8% -0.1 0.03 ±100% perf-profile.self.cycles-pp.do_syscall_64
0.14 ± 9% -0.1 0.05 ± 8% perf-profile.self.cycles-pp.__might_sleep
0.29 ± 6% -0.1 0.21 ± 5% perf-profile.self.cycles-pp.kmem_cache_free
0.13 ± 8% -0.1 0.05 ± 8% perf-profile.self.cycles-pp.__x64_sys_fcntl
0.08 ± 12% -0.0 0.06 ± 7% perf-profile.self.cycles-pp.locks_free_lock
92.45 +3.9 96.37 perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Rong Chen
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