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Date: Mon, 6 Jul 2020 09:20:29 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Mel Gorman <mgorman@...hsingularity.net>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Maxim Levitsky <mlevitsk@...hat.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org
Subject: [fs] b6509f6a8c: will-it-scale.per_thread_ops -12.6% regression
Greeting,
FYI, we noticed a -12.6% regression of will-it-scale.per_thread_ops due to commit:
commit: b6509f6a8c4313c068c69785c001451415969e44 ("Revert "fs: Do not check if there is a fsnotify watcher on pseudo inodes"")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
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: thread
test: eventfd1
cpufreq_governor: performance
ucode: 0x5002f01
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_process_ops -6.4% regression |
| test machine | 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory |
| test parameters | cpufreq_governor=performance |
| | mode=process |
| | nr_task=100% |
| | test=unix1 |
| | ucode=0x5002f01 |
+------------------+---------------------------------------------------------------------------+
| testcase: change | will-it-scale: will-it-scale.per_thread_ops -2.3% regression |
| test machine | 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory |
| test parameters | cpufreq_governor=performance |
| | mode=thread |
| | nr_task=100% |
| | test=pipe1 |
| | ucode=0x5002f01 |
+------------------+---------------------------------------------------------------------------+
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/ucode:
gcc-9/performance/x86_64-rhel-7.6/thread/100%/debian-x86_64-20191114.cgz/lkp-csl-2ap4/eventfd1/will-it-scale/0x5002f01
commit:
v5.8-rc3
b6509f6a8c ("Revert "fs: Do not check if there is a fsnotify watcher on pseudo inodes"")
v5.8-rc3 b6509f6a8c4313c068c69785c00
---------------- ---------------------------
%stddev %change %stddev
\ | \
1652352 -12.6% 1444002 ± 2% will-it-scale.per_thread_ops
3.173e+08 -12.6% 2.772e+08 ± 2% will-it-scale.workload
23.95 -3.1 20.90 ± 2% mpstat.cpu.all.usr%
23.00 -12.0% 20.25 ± 4% vmstat.cpu.us
578849 ± 4% +8.6% 628428 ± 4% sched_debug.cpu.max_idle_balance_cost.max
0.00 ± 9% -14.4% 0.00 ± 13% sched_debug.cpu.next_balance.stddev
2207 ± 24% +34.7% 2973 ± 20% numa-vmstat.node0.nr_mapped
6949 ± 22% +43.7% 9984 ± 10% numa-vmstat.node0.nr_slab_reclaimable
9739 ± 13% -29.0% 6913 ± 12% numa-vmstat.node1.nr_slab_reclaimable
7247 ± 13% -28.4% 5190 ± 19% slabinfo.eventpoll_pwq.active_objs
7247 ± 13% -28.4% 5190 ± 19% slabinfo.eventpoll_pwq.num_objs
960.00 ± 11% -40.0% 576.00 ± 26% slabinfo.kmalloc-rcl-128.active_objs
960.00 ± 11% -40.0% 576.00 ± 26% slabinfo.kmalloc-rcl-128.num_objs
27801 ± 22% +43.7% 39940 ± 10% numa-meminfo.node0.KReclaimable
8718 ± 25% +35.0% 11773 ± 20% numa-meminfo.node0.Mapped
27801 ± 22% +43.7% 39940 ± 10% numa-meminfo.node0.SReclaimable
38959 ± 13% -29.0% 27656 ± 12% numa-meminfo.node1.KReclaimable
38959 ± 13% -29.0% 27656 ± 12% numa-meminfo.node1.SReclaimable
107406 ± 2% -13.6% 92844 ± 6% numa-meminfo.node1.Slab
0.00 +1.1 1.09 ± 16% perf-profile.calltrace.cycles-pp.fsnotify_parent.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +1.3 1.26 ± 18% perf-profile.calltrace.cycles-pp.fsnotify_parent.security_file_permission.vfs_read.ksys_read.do_syscall_64
0.00 +1.8 1.76 ± 21% perf-profile.calltrace.cycles-pp.fsnotify.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +3.7 3.70 ± 20% perf-profile.calltrace.cycles-pp.fsnotify.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +3.0 3.02 ± 17% perf-profile.children.cycles-pp.fsnotify_parent
0.00 +5.5 5.55 ± 20% perf-profile.children.cycles-pp.fsnotify
0.00 +2.7 2.66 ± 17% perf-profile.self.cycles-pp.fsnotify_parent
0.00 +5.4 5.35 ± 20% perf-profile.self.cycles-pp.fsnotify
10890 ± 21% +53.7% 16738 ± 12% interrupts.CPU168.CAL:Function_call_interrupts
4602 ± 5% +22.7% 5649 ± 13% interrupts.CPU169.CAL:Function_call_interrupts
4920 ± 13% -21.3% 3874 ± 2% interrupts.CPU170.CAL:Function_call_interrupts
463.80 ± 11% -25.1% 347.50 ± 4% interrupts.CPU170.RES:Rescheduling_interrupts
3619 ± 2% +10.2% 3990 ± 9% interrupts.CPU36.CAL:Function_call_interrupts
5768 ± 34% +43.3% 8267 ± 2% interrupts.CPU74.NMI:Non-maskable_interrupts
5768 ± 34% +43.3% 8267 ± 2% interrupts.CPU74.PMI:Performance_monitoring_interrupts
5769 ± 34% +43.3% 8268 ± 2% interrupts.CPU75.NMI:Non-maskable_interrupts
5769 ± 34% +43.3% 8268 ± 2% interrupts.CPU75.PMI:Performance_monitoring_interrupts
5769 ± 34% +43.3% 8267 ± 2% interrupts.CPU76.NMI:Non-maskable_interrupts
5769 ± 34% +43.3% 8267 ± 2% interrupts.CPU76.PMI:Performance_monitoring_interrupts
5768 ± 34% +43.3% 8268 ± 2% interrupts.CPU77.NMI:Non-maskable_interrupts
5768 ± 34% +43.3% 8268 ± 2% interrupts.CPU77.PMI:Performance_monitoring_interrupts
3602 ± 2% +12.9% 4068 ± 13% interrupts.CPU81.CAL:Function_call_interrupts
0.05 ± 32% +121.5% 0.10 ± 39% perf-stat.i.MPKI
1.06 -0.1 0.94 perf-stat.i.branch-miss-rate%
1.107e+09 -13.3% 9.596e+08 ± 2% perf-stat.i.branch-misses
199835 -11.5% 176905 ± 2% perf-stat.i.dTLB-store-misses
9.558e+10 +9.4% 1.046e+11 ± 2% perf-stat.i.dTLB-stores
9.687e+08 -13.8% 8.345e+08 ± 2% perf-stat.i.iTLB-load-misses
535.53 +20.3% 644.34 perf-stat.i.instructions-per-iTLB-miss
1.10 ± 12% +79.6% 1.98 ± 2% perf-stat.i.metric.K/sec
1.05 -0.1 0.92 perf-stat.overall.branch-miss-rate%
0.00 ± 13% -0.0 0.00 ± 4% perf-stat.overall.dTLB-load-miss-rate%
0.00 -0.0 0.00 perf-stat.overall.dTLB-store-miss-rate%
528.82 +20.8% 638.59 perf-stat.overall.instructions-per-iTLB-miss
487060 +20.3% 586095 perf-stat.overall.path-length
1.103e+09 -13.3% 9.564e+08 ± 2% perf-stat.ps.branch-misses
199661 -11.5% 176727 ± 2% perf-stat.ps.dTLB-store-misses
9.525e+10 +9.5% 1.043e+11 ± 2% perf-stat.ps.dTLB-stores
9.67e+08 -13.9% 8.33e+08 ± 3% perf-stat.ps.iTLB-load-misses
will-it-scale.per_thread_ops
1.7e+06 +----------------------------------------------------------------+
| .+.. .+.+.. .+.. .+ |
1.65e+06 |.+ .+.+ + +.+. .+.+ +. .+.+. |
| +. +. + |
1.6e+06 |-+ |
| |
1.55e+06 |-+ |
| |
1.5e+06 |-+ |
| O O O O O O |
1.45e+06 |-O O O O O O O O O O O O O O O O O O O O |
| O |
1.4e+06 |-+ |
| |
1.35e+06 +----------------------------------------------------------------+
will-it-scale.workload
3.3e+08 +-----------------------------------------------------------------+
| |
3.2e+08 |.+ .+.+..+.+..+.+.+.. .+..+.+. .+.+ |
| +..+ +.+ +..+ |
3.1e+08 |-+ |
| |
3e+08 |-+ |
| |
2.9e+08 |-+ |
| |
2.8e+08 |-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 |
2.7e+08 |-+ |
| |
2.6e+08 +-----------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
***************************************************************************************************
lkp-csl-2ap4: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-7.6/process/100%/debian-x86_64-20191114.cgz/lkp-csl-2ap4/unix1/will-it-scale/0x5002f01
commit:
v5.8-rc3
b6509f6a8c ("Revert "fs: Do not check if there is a fsnotify watcher on pseudo inodes"")
v5.8-rc3 b6509f6a8c4313c068c69785c00
---------------- ---------------------------
%stddev %change %stddev
\ | \
720286 -6.4% 674507 will-it-scale.per_process_ops
1.383e+08 -6.4% 1.295e+08 will-it-scale.workload
97977 +1.4% 99342 proc-vmstat.nr_anon_pages
8.31 ± 41% +48.5% 12.33 ± 3% sched_debug.cpu.sched_goidle.min
1097 ± 8% +19.8% 1315 ± 9% slabinfo.task_group.active_objs
1097 ± 8% +19.8% 1315 ± 9% slabinfo.task_group.num_objs
13194 ± 25% -29.6% 9295 ± 24% softirqs.CPU124.RCU
9178 ± 8% -7.8% 8467 ± 4% softirqs.CPU48.RCU
1229 ± 68% +156.3% 3151 ± 70% interrupts.CPU0.CAL:Function_call_interrupts
8259 -37.6% 5157 ± 34% interrupts.CPU163.NMI:Non-maskable_interrupts
8259 -37.6% 5157 ± 34% interrupts.CPU163.PMI:Performance_monitoring_interrupts
15337 ± 81% +146.4% 37788 ± 45% numa-vmstat.node2.nr_active_anon
15187 ± 81% +147.5% 37594 ± 45% numa-vmstat.node2.nr_anon_pages
15337 ± 81% +146.4% 37788 ± 45% numa-vmstat.node2.nr_zone_active_anon
127540 ± 6% -8.0% 117311 numa-vmstat.node2.numa_other
62308 ± 81% +144.0% 152033 ± 45% numa-meminfo.node2.Active
61336 ± 81% +146.7% 151288 ± 45% numa-meminfo.node2.Active(anon)
15647 ±195% +497.8% 93536 ± 57% numa-meminfo.node2.AnonHugePages
60733 ± 82% +147.8% 150509 ± 45% numa-meminfo.node2.AnonPages
803985 ± 8% +10.5% 888495 ± 9% numa-meminfo.node2.MemUsed
1.14 -0.1 1.07 perf-stat.i.branch-miss-rate%
1.223e+09 -6.3% 1.146e+09 perf-stat.i.branch-misses
0.99 -1.5% 0.98 perf-stat.i.cpi
1.619e+11 +1.4% 1.641e+11 perf-stat.i.dTLB-loads
1e+11 +4.0% 1.04e+11 perf-stat.i.dTLB-stores
1.06e+09 -7.8% 9.779e+08 perf-stat.i.iTLB-load-misses
5.531e+11 +1.3% 5.603e+11 perf-stat.i.instructions
527.69 +9.7% 578.78 perf-stat.i.instructions-per-iTLB-miss
1.01 +1.4% 1.02 perf-stat.i.ipc
1931 +1.4% 1958 perf-stat.i.metric.M/sec
1.12 -0.1 1.06 perf-stat.overall.branch-miss-rate%
0.99 -1.4% 0.97 perf-stat.overall.cpi
0.00 -0.0 0.00 perf-stat.overall.dTLB-store-miss-rate%
521.71 +9.8% 572.92 perf-stat.overall.instructions-per-iTLB-miss
1.01 +1.4% 1.03 perf-stat.overall.ipc
1206072 +8.1% 1303735 perf-stat.overall.path-length
1.218e+09 -6.3% 1.142e+09 perf-stat.ps.branch-misses
1.613e+11 +1.4% 1.635e+11 perf-stat.ps.dTLB-loads
9.97e+10 +4.0% 1.036e+11 perf-stat.ps.dTLB-stores
1.057e+09 -7.8% 9.747e+08 perf-stat.ps.iTLB-load-misses
5.512e+11 +1.3% 5.584e+11 perf-stat.ps.instructions
1.668e+14 +1.2% 1.688e+14 perf-stat.total.instructions
38.39 -2.2 36.14 perf-profile.calltrace.cycles-pp.new_sync_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
36.80 -2.1 34.66 perf-profile.calltrace.cycles-pp.sock_write_iter.new_sync_write.vfs_write.ksys_write.do_syscall_64
34.46 -2.0 32.44 perf-profile.calltrace.cycles-pp.sock_sendmsg.sock_write_iter.new_sync_write.vfs_write.ksys_write
33.29 -1.8 31.47 perf-profile.calltrace.cycles-pp.new_sync_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
30.96 -1.8 29.19 perf-profile.calltrace.cycles-pp.unix_stream_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write.vfs_write
31.72 -1.7 30.05 perf-profile.calltrace.cycles-pp.sock_read_iter.new_sync_read.vfs_read.ksys_read.do_syscall_64
25.95 -1.5 24.46 perf-profile.calltrace.cycles-pp.unix_stream_recvmsg.sock_read_iter.new_sync_read.vfs_read.ksys_read
53.97 -1.5 52.49 perf-profile.calltrace.cycles-pp.write
24.74 -1.4 23.30 perf-profile.calltrace.cycles-pp.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter.new_sync_read.vfs_read
47.12 -1.0 46.10 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write
46.34 -1.0 45.38 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
44.29 -0.9 43.43 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
42.43 -0.8 41.64 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write
13.05 -0.8 12.28 perf-profile.calltrace.cycles-pp.sock_alloc_send_pskb.unix_stream_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write
11.31 -0.7 10.65 perf-profile.calltrace.cycles-pp.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg.sock_sendmsg.sock_write_iter
10.31 -0.6 9.71 perf-profile.calltrace.cycles-pp.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg.sock_sendmsg
8.93 -0.5 8.39 perf-profile.calltrace.cycles-pp.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter.new_sync_read
8.64 -0.5 8.14 perf-profile.calltrace.cycles-pp.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter
8.31 -0.5 7.85 perf-profile.calltrace.cycles-pp.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic.unix_stream_recvmsg
7.91 -0.5 7.45 perf-profile.calltrace.cycles-pp.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write
6.55 -0.4 6.19 perf-profile.calltrace.cycles-pp.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter.new_sync_read
0.54 ± 2% -0.3 0.25 ±100% perf-profile.calltrace.cycles-pp.___might_sleep.__might_fault._copy_from_iter.skb_copy_datagram_from_iter.unix_stream_sendmsg
3.81 -0.2 3.58 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.write
3.98 -0.2 3.75 perf-profile.calltrace.cycles-pp.__kmalloc_reserve.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg
3.63 -0.2 3.41 perf-profile.calltrace.cycles-pp._copy_from_iter.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_sendmsg.sock_write_iter
3.88 -0.2 3.65 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.read
3.82 -0.2 3.60 perf-profile.calltrace.cycles-pp.skb_release_all.consume_skb.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter
2.87 -0.2 2.66 perf-profile.calltrace.cycles-pp.security_socket_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write.vfs_write
3.71 -0.2 3.50 perf-profile.calltrace.cycles-pp.skb_release_head_state.skb_release_all.consume_skb.unix_stream_read_generic.unix_stream_recvmsg
3.62 -0.2 3.42 perf-profile.calltrace.cycles-pp._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic
3.91 -0.2 3.71 perf-profile.calltrace.cycles-pp.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor.unix_stream_read_generic
2.95 -0.2 2.76 perf-profile.calltrace.cycles-pp.security_socket_recvmsg.sock_recvmsg.sock_read_iter.new_sync_read.vfs_read
3.50 -0.2 3.31 perf-profile.calltrace.cycles-pp.__check_object_size.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_sendmsg.sock_write_iter
3.33 -0.2 3.15 perf-profile.calltrace.cycles-pp.__kmalloc_node_track_caller.__kmalloc_reserve.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb
3.44 -0.2 3.25 perf-profile.calltrace.cycles-pp.unix_destruct_scm.skb_release_head_state.skb_release_all.consume_skb.unix_stream_read_generic
3.09 -0.2 2.91 perf-profile.calltrace.cycles-pp.kmem_cache_alloc_node.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg
3.65 -0.2 3.47 perf-profile.calltrace.cycles-pp.__check_object_size.simple_copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor
2.38 -0.2 2.21 perf-profile.calltrace.cycles-pp.security_file_permission.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.08 -0.1 1.94 perf-profile.calltrace.cycles-pp.aa_sk_perm.security_socket_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write
2.63 -0.1 2.50 perf-profile.calltrace.cycles-pp.sock_wfree.unix_destruct_scm.skb_release_head_state.skb_release_all.consume_skb
3.44 -0.1 3.31 perf-profile.calltrace.cycles-pp.sock_recvmsg.sock_read_iter.new_sync_read.vfs_read.ksys_read
1.71 -0.1 1.59 perf-profile.calltrace.cycles-pp.common_file_perm.security_file_permission.vfs_read.ksys_read.do_syscall_64
1.69 -0.1 1.58 perf-profile.calltrace.cycles-pp.common_file_perm.security_file_permission.vfs_write.ksys_write.do_syscall_64
1.96 -0.1 1.85 perf-profile.calltrace.cycles-pp.aa_sk_perm.security_socket_recvmsg.sock_recvmsg.sock_read_iter.new_sync_read
1.44 -0.1 1.34 perf-profile.calltrace.cycles-pp.wait_for_unix_gc.unix_stream_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write
1.57 -0.1 1.48 perf-profile.calltrace.cycles-pp.copyin._copy_from_iter.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_sendmsg
1.47 -0.1 1.39 perf-profile.calltrace.cycles-pp.copyout._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter.unix_stream_read_actor
1.20 -0.1 1.13 perf-profile.calltrace.cycles-pp.sock_def_readable.unix_stream_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write
0.70 -0.1 0.63 ± 4% perf-profile.calltrace.cycles-pp.__might_sleep.kmem_cache_alloc_node.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb
1.10 ± 2% -0.1 1.03 ± 2% perf-profile.calltrace.cycles-pp.__fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
0.98 -0.1 0.91 perf-profile.calltrace.cycles-pp.skb_set_owner_w.sock_alloc_send_pskb.unix_stream_sendmsg.sock_sendmsg.sock_write_iter
1.01 ± 2% -0.1 0.94 ± 3% perf-profile.calltrace.cycles-pp.__fget_light.__fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
1.01 -0.1 0.94 perf-profile.calltrace.cycles-pp.__might_fault._copy_from_iter.skb_copy_datagram_from_iter.unix_stream_sendmsg.sock_sendmsg
1.13 -0.1 1.07 perf-profile.calltrace.cycles-pp.unix_write_space.sock_wfree.unix_destruct_scm.skb_release_head_state.skb_release_all
1.05 -0.1 0.99 ± 3% perf-profile.calltrace.cycles-pp.__ksize.__alloc_skb.alloc_skb_with_frags.sock_alloc_send_pskb.unix_stream_sendmsg
0.96 -0.1 0.91 perf-profile.calltrace.cycles-pp._raw_spin_unlock_irqrestore.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter.new_sync_read
0.96 -0.1 0.90 perf-profile.calltrace.cycles-pp._raw_spin_unlock_irqrestore.unix_stream_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write
0.98 -0.1 0.93 perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.write
1.04 -0.1 0.98 perf-profile.calltrace.cycles-pp.skb_unlink.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter.new_sync_read
1.00 -0.1 0.94 perf-profile.calltrace.cycles-pp.syscall_return_via_sysret.read
0.80 -0.1 0.75 perf-profile.calltrace.cycles-pp._raw_spin_lock.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter.new_sync_read
1.02 -0.0 0.97 perf-profile.calltrace.cycles-pp.skb_queue_tail.unix_stream_sendmsg.sock_sendmsg.sock_write_iter.new_sync_write
0.85 -0.0 0.80 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.skb_unlink.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter
0.68 ± 2% -0.0 0.64 perf-profile.calltrace.cycles-pp.__prepare_exit_to_usermode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
0.71 -0.0 0.67 perf-profile.calltrace.cycles-pp.___might_sleep.__kmalloc_node_track_caller.__kmalloc_reserve.__alloc_skb.alloc_skb_with_frags
0.70 ± 2% -0.0 0.66 ± 2% perf-profile.calltrace.cycles-pp.copy_user_generic_unrolled.copyin._copy_from_iter.skb_copy_datagram_from_iter.unix_stream_sendmsg
0.85 -0.0 0.81 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.skb_queue_tail.unix_stream_sendmsg.sock_sendmsg.sock_write_iter
0.56 -0.0 0.52 ± 2% perf-profile.calltrace.cycles-pp.apparmor_socket_recvmsg.security_socket_recvmsg.sock_recvmsg.sock_read_iter.new_sync_read
0.57 -0.0 0.54 perf-profile.calltrace.cycles-pp.___might_sleep.wait_for_unix_gc.unix_stream_sendmsg.sock_sendmsg.sock_write_iter
0.68 -0.0 0.64 ± 2% perf-profile.calltrace.cycles-pp.copy_user_generic_unrolled.copyout._copy_to_iter.__skb_datagram_iter.skb_copy_datagram_iter
0.57 -0.0 0.54 perf-profile.calltrace.cycles-pp.__might_sleep.__kmalloc_node_track_caller.__kmalloc_reserve.__alloc_skb.alloc_skb_with_frags
1.68 -0.0 1.64 perf-profile.calltrace.cycles-pp.mutex_lock.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter.new_sync_read
0.65 -0.0 0.62 perf-profile.calltrace.cycles-pp.mutex_unlock.unix_stream_read_generic.unix_stream_recvmsg.sock_read_iter.new_sync_read
0.00 +0.6 0.57 perf-profile.calltrace.cycles-pp.fsnotify_parent.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +0.6 0.62 perf-profile.calltrace.cycles-pp.fsnotify_parent.security_file_permission.vfs_read.ksys_read.do_syscall_64
0.00 +0.6 0.64 perf-profile.calltrace.cycles-pp.fsnotify_parent.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.50 +0.7 3.20 perf-profile.calltrace.cycles-pp.security_file_permission.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
0.00 +0.9 0.93 perf-profile.calltrace.cycles-pp.fsnotify.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
48.49 +1.3 49.77 perf-profile.calltrace.cycles-pp.read
41.56 +1.7 43.30 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read
40.78 +1.8 42.56 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
38.81 +1.9 40.68 perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
37.05 +1.9 38.94 perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read
0.00 +1.9 1.90 perf-profile.calltrace.cycles-pp.fsnotify.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
38.49 -2.2 36.24 perf-profile.children.cycles-pp.new_sync_write
36.86 -2.1 34.71 perf-profile.children.cycles-pp.sock_write_iter
34.57 -2.0 32.53 perf-profile.children.cycles-pp.sock_sendmsg
33.36 -1.8 31.55 perf-profile.children.cycles-pp.new_sync_read
31.28 -1.8 29.50 perf-profile.children.cycles-pp.unix_stream_sendmsg
31.77 -1.7 30.10 perf-profile.children.cycles-pp.sock_read_iter
26.00 -1.5 24.50 perf-profile.children.cycles-pp.unix_stream_recvmsg
54.00 -1.5 52.53 perf-profile.children.cycles-pp.write
24.99 -1.5 23.53 perf-profile.children.cycles-pp.unix_stream_read_generic
44.34 -0.9 43.48 perf-profile.children.cycles-pp.ksys_write
13.14 -0.8 12.36 perf-profile.children.cycles-pp.sock_alloc_send_pskb
42.57 -0.7 41.85 perf-profile.children.cycles-pp.vfs_write
11.37 -0.7 10.71 perf-profile.children.cycles-pp.alloc_skb_with_frags
10.51 -0.6 9.90 perf-profile.children.cycles-pp.__alloc_skb
9.00 -0.5 8.46 perf-profile.children.cycles-pp.unix_stream_read_actor
8.72 -0.5 8.21 perf-profile.children.cycles-pp.skb_copy_datagram_iter
8.00 -0.5 7.53 perf-profile.children.cycles-pp.skb_copy_datagram_from_iter
8.38 -0.5 7.91 perf-profile.children.cycles-pp.__skb_datagram_iter
7.43 -0.4 7.04 perf-profile.children.cycles-pp.__check_object_size
6.57 -0.4 6.21 perf-profile.children.cycles-pp.consume_skb
5.14 -0.3 4.83 perf-profile.children.cycles-pp.entry_SYSCALL_64
4.60 -0.3 4.32 perf-profile.children.cycles-pp.syscall_return_via_sysret
4.16 -0.3 3.89 perf-profile.children.cycles-pp.aa_sk_perm
4.22 -0.3 3.96 perf-profile.children.cycles-pp.___might_sleep
3.50 -0.2 3.26 perf-profile.children.cycles-pp.common_file_perm
4.07 -0.2 3.83 perf-profile.children.cycles-pp.__kmalloc_reserve
3.71 -0.2 3.48 perf-profile.children.cycles-pp._copy_from_iter
3.85 -0.2 3.63 perf-profile.children.cycles-pp.skb_release_all
2.95 -0.2 2.73 perf-profile.children.cycles-pp.__might_sleep
2.91 -0.2 2.70 perf-profile.children.cycles-pp.security_socket_sendmsg
3.72 -0.2 3.51 perf-profile.children.cycles-pp._copy_to_iter
3.76 -0.2 3.55 perf-profile.children.cycles-pp.skb_release_head_state
3.01 -0.2 2.81 perf-profile.children.cycles-pp.security_socket_recvmsg
3.54 -0.2 3.33 perf-profile.children.cycles-pp.__kmalloc_node_track_caller
3.97 -0.2 3.77 perf-profile.children.cycles-pp.simple_copy_to_iter
3.28 -0.2 3.09 perf-profile.children.cycles-pp.kmem_cache_alloc_node
3.54 -0.2 3.35 perf-profile.children.cycles-pp.unix_destruct_scm
2.36 ± 2% -0.2 2.21 ± 2% perf-profile.children.cycles-pp.__fdget_pos
2.64 -0.1 2.50 perf-profile.children.cycles-pp.sock_wfree
3.50 -0.1 3.37 perf-profile.children.cycles-pp.sock_recvmsg
2.01 ± 2% -0.1 1.88 ± 3% perf-profile.children.cycles-pp.__fget_light
2.10 ± 2% -0.1 1.97 ± 2% perf-profile.children.cycles-pp.__might_fault
1.97 -0.1 1.85 perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
1.54 -0.1 1.44 perf-profile.children.cycles-pp.wait_for_unix_gc
1.95 -0.1 1.85 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
1.43 -0.1 1.34 perf-profile.children.cycles-pp._cond_resched
1.60 -0.1 1.51 perf-profile.children.cycles-pp.copyin
1.52 -0.1 1.43 perf-profile.children.cycles-pp.__prepare_exit_to_usermode
1.67 ± 3% -0.1 1.58 ± 2% perf-profile.children.cycles-pp._raw_spin_lock
1.64 -0.1 1.55 perf-profile.children.cycles-pp.copy_user_generic_unrolled
1.50 -0.1 1.42 perf-profile.children.cycles-pp.copyout
1.21 -0.1 1.13 perf-profile.children.cycles-pp.sock_def_readable
0.98 -0.1 0.91 perf-profile.children.cycles-pp.skb_set_owner_w
0.95 -0.1 0.89 perf-profile.children.cycles-pp.copy_user_enhanced_fast_string
1.05 -0.1 0.99 ± 2% perf-profile.children.cycles-pp.__ksize
0.84 -0.1 0.78 ± 2% perf-profile.children.cycles-pp.__x86_indirect_thunk_rax
1.13 -0.1 1.08 perf-profile.children.cycles-pp.unix_write_space
1.05 -0.1 0.99 perf-profile.children.cycles-pp.skb_unlink
0.74 ± 2% -0.1 0.69 perf-profile.children.cycles-pp.apparmor_file_permission
1.02 -0.1 0.97 perf-profile.children.cycles-pp.skb_queue_tail
1.75 -0.0 1.70 perf-profile.children.cycles-pp.mutex_lock
0.56 -0.0 0.52 ± 2% perf-profile.children.cycles-pp.apparmor_socket_recvmsg
0.71 -0.0 0.67 perf-profile.children.cycles-pp.rcu_all_qs
0.67 -0.0 0.63 perf-profile.children.cycles-pp.__syscall_return_slowpath
0.67 -0.0 0.64 perf-profile.children.cycles-pp.check_stack_object
0.44 -0.0 0.41 perf-profile.children.cycles-pp.apparmor_socket_sendmsg
0.67 -0.0 0.65 perf-profile.children.cycles-pp.mutex_unlock
0.30 -0.0 0.28 ± 2% perf-profile.children.cycles-pp.put_pid
0.23 -0.0 0.21 ± 2% perf-profile.children.cycles-pp.skb_release_data
0.43 +0.0 0.46 perf-profile.children.cycles-pp.apparmor_socket_getpeersec_dgram
4.96 +0.6 5.57 perf-profile.children.cycles-pp.security_file_permission
88.79 +0.7 89.51 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
87.30 +0.8 88.11 perf-profile.children.cycles-pp.do_syscall_64
48.55 +1.3 49.85 perf-profile.children.cycles-pp.read
0.00 +1.9 1.87 perf-profile.children.cycles-pp.fsnotify_parent
38.85 +1.9 40.72 perf-profile.children.cycles-pp.ksys_read
37.17 +2.0 39.17 perf-profile.children.cycles-pp.vfs_read
0.00 +2.9 2.90 perf-profile.children.cycles-pp.fsnotify
4.56 -0.3 4.28 perf-profile.self.cycles-pp.syscall_return_via_sysret
4.10 -0.2 3.85 perf-profile.self.cycles-pp.___might_sleep
2.96 -0.2 2.75 perf-profile.self.cycles-pp.unix_stream_read_generic
2.65 -0.2 2.46 perf-profile.self.cycles-pp.__might_sleep
2.94 -0.2 2.75 perf-profile.self.cycles-pp.unix_stream_sendmsg
2.85 ± 2% -0.2 2.67 perf-profile.self.cycles-pp.common_file_perm
1.40 ± 4% -0.2 1.22 perf-profile.self.cycles-pp.new_sync_read
2.32 -0.2 2.17 perf-profile.self.cycles-pp.aa_sk_perm
2.56 -0.1 2.41 perf-profile.self.cycles-pp.entry_SYSCALL_64
1.90 ± 2% -0.1 1.77 ± 3% perf-profile.self.cycles-pp.__fget_light
2.13 -0.1 2.00 perf-profile.self.cycles-pp.__alloc_skb
2.29 -0.1 2.17 perf-profile.self.cycles-pp.sock_write_iter
1.93 -0.1 1.81 perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
1.79 -0.1 1.67 perf-profile.self.cycles-pp.write
1.83 -0.1 1.72 perf-profile.self.cycles-pp.read
1.52 -0.1 1.42 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
1.71 -0.1 1.61 perf-profile.self.cycles-pp.__kmalloc_node_track_caller
1.93 -0.1 1.84 perf-profile.self.cycles-pp._raw_spin_lock_irqsave
1.60 ± 3% -0.1 1.52 ± 2% perf-profile.self.cycles-pp._raw_spin_lock
1.81 -0.1 1.73 perf-profile.self.cycles-pp.kmem_cache_alloc_node
1.17 -0.1 1.09 perf-profile.self.cycles-pp.sock_def_readable
1.55 -0.1 1.47 perf-profile.self.cycles-pp.copy_user_generic_unrolled
1.25 ± 2% -0.1 1.17 ± 2% perf-profile.self.cycles-pp._copy_to_iter
0.61 -0.1 0.54 perf-profile.self.cycles-pp.ksys_write
1.44 -0.1 1.37 perf-profile.self.cycles-pp.sock_wfree
0.95 -0.1 0.88 perf-profile.self.cycles-pp.skb_set_owner_w
1.06 -0.1 0.99 ± 2% perf-profile.self.cycles-pp._copy_from_iter
0.58 ± 5% -0.1 0.52 ± 5% perf-profile.self.cycles-pp.aa_file_perm
1.04 -0.1 0.97 ± 2% perf-profile.self.cycles-pp.__ksize
1.10 -0.1 1.04 perf-profile.self.cycles-pp.unix_write_space
0.68 ± 2% -0.1 0.62 perf-profile.self.cycles-pp.__skb_datagram_iter
0.93 -0.1 0.87 perf-profile.self.cycles-pp.copy_user_enhanced_fast_string
0.52 -0.1 0.47 perf-profile.self.cycles-pp.ksys_read
0.68 ± 2% -0.1 0.63 ± 2% perf-profile.self.cycles-pp.apparmor_file_permission
0.83 -0.0 0.78 perf-profile.self.cycles-pp.unix_destruct_scm
0.87 -0.0 0.82 perf-profile.self.cycles-pp.consume_skb
0.83 -0.0 0.79 perf-profile.self.cycles-pp.sock_alloc_send_pskb
0.71 -0.0 0.67 perf-profile.self.cycles-pp._cond_resched
0.82 -0.0 0.78 perf-profile.self.cycles-pp.alloc_skb_with_frags
0.29 ± 3% -0.0 0.25 perf-profile.self.cycles-pp.unix_stream_read_actor
0.66 -0.0 0.62 perf-profile.self.cycles-pp.skb_copy_datagram_from_iter
0.53 -0.0 0.49 ± 2% perf-profile.self.cycles-pp.apparmor_socket_recvmsg
0.64 -0.0 0.60 perf-profile.self.cycles-pp.__syscall_return_slowpath
0.60 ± 2% -0.0 0.56 ± 4% perf-profile.self.cycles-pp.__might_fault
0.50 -0.0 0.46 perf-profile.self.cycles-pp.__kmalloc_reserve
0.37 -0.0 0.34 perf-profile.self.cycles-pp.security_socket_recvmsg
2.25 -0.0 2.21 perf-profile.self.cycles-pp.sock_read_iter
0.54 -0.0 0.51 perf-profile.self.cycles-pp.rcu_all_qs
0.37 ± 5% -0.0 0.34 ± 4% perf-profile.self.cycles-pp.sock_sendmsg
0.43 -0.0 0.40 perf-profile.self.cycles-pp.__x86_indirect_thunk_rax
0.98 -0.0 0.95 perf-profile.self.cycles-pp.unix_stream_recvmsg
0.35 -0.0 0.32 perf-profile.self.cycles-pp.skb_copy_datagram_iter
0.41 -0.0 0.38 perf-profile.self.cycles-pp.apparmor_socket_sendmsg
0.56 -0.0 0.54 perf-profile.self.cycles-pp.check_stack_object
0.44 -0.0 0.41 perf-profile.self.cycles-pp.wait_for_unix_gc
0.29 ± 3% -0.0 0.26 ± 2% perf-profile.self.cycles-pp.security_socket_sendmsg
0.42 -0.0 0.40 perf-profile.self.cycles-pp.security_socket_getpeersec_dgram
0.63 -0.0 0.61 perf-profile.self.cycles-pp.mutex_unlock
0.40 ± 2% -0.0 0.38 perf-profile.self.cycles-pp.__fdget_pos
0.31 -0.0 0.29 perf-profile.self.cycles-pp.copyin
0.23 -0.0 0.21 ± 2% perf-profile.self.cycles-pp.skb_release_data
0.19 -0.0 0.17 ± 2% perf-profile.self.cycles-pp.skb_release_head_state
0.24 -0.0 0.23 perf-profile.self.cycles-pp.copyout
0.21 ± 2% -0.0 0.19 ± 2% perf-profile.self.cycles-pp.simple_copy_to_iter
0.26 -0.0 0.25 perf-profile.self.cycles-pp.kmalloc_slab
0.17 ± 2% +0.0 0.20 ± 2% perf-profile.self.cycles-pp.__vfs_read
0.40 +0.0 0.43 perf-profile.self.cycles-pp.apparmor_socket_getpeersec_dgram
0.73 +0.0 0.77 perf-profile.self.cycles-pp.mutex_lock
0.51 +0.1 0.57 perf-profile.self.cycles-pp.sock_recvmsg
1.33 +0.2 1.57 perf-profile.self.cycles-pp.vfs_write
0.75 ± 6% +0.4 1.10 ± 3% perf-profile.self.cycles-pp.security_file_permission
0.97 +0.5 1.49 ± 2% perf-profile.self.cycles-pp.vfs_read
0.00 +1.7 1.65 perf-profile.self.cycles-pp.fsnotify_parent
0.00 +2.8 2.80 perf-profile.self.cycles-pp.fsnotify
***************************************************************************************************
lkp-csl-2ap4: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-7.6/thread/100%/debian-x86_64-20191114.cgz/lkp-csl-2ap4/pipe1/will-it-scale/0x5002f01
commit:
v5.8-rc3
b6509f6a8c ("Revert "fs: Do not check if there is a fsnotify watcher on pseudo inodes"")
v5.8-rc3 b6509f6a8c4313c068c69785c00
---------------- ---------------------------
%stddev %change %stddev
\ | \
1045643 -2.3% 1021331 will-it-scale.per_thread_ops
2.008e+08 -2.3% 1.961e+08 will-it-scale.workload
29490176 ± 3% -9.8% 26607616 ± 3% meminfo.DirectMap2M
202721 ± 4% +11.5% 225943 ± 3% numa-numastat.node2.local_node
25892 ± 28% -75.5% 6341 ± 97% numa-numastat.node2.other_node
1843 +8.9% 2007 ± 5% numa-vmstat.node2.nr_mapped
130681 ± 5% -14.7% 111436 ± 5% numa-vmstat.node2.numa_other
9801 ± 5% +16.0% 11370 ± 7% sched_debug.cpu.ttwu_count.max
3052 ± 12% +23.6% 3771 ± 11% sched_debug.cpu.ttwu_local.max
136156 +1.4% 138002 proc-vmstat.nr_active_anon
109009 +1.1% 110229 proc-vmstat.nr_anon_pages
136156 +1.4% 138002 proc-vmstat.nr_zone_active_anon
1120468 +1.6% 1137854 proc-vmstat.pgalloc_normal
337.83 ± 61% +53.8% 519.75 ± 47% interrupts.39:PCI-MSI.524290-edge.eth0-TxRx-1
337.83 ± 61% +53.8% 519.75 ± 47% interrupts.CPU11.39:PCI-MSI.524290-edge.eth0-TxRx-1
303.33 +45.7% 442.00 ± 44% interrupts.CPU148.RES:Rescheduling_interrupts
5509 ± 35% +50.1% 8271 interrupts.CPU155.NMI:Non-maskable_interrupts
5509 ± 35% +50.1% 8271 interrupts.CPU155.PMI:Performance_monitoring_interrupts
5509 ± 35% +50.1% 8271 interrupts.CPU157.NMI:Non-maskable_interrupts
5509 ± 35% +50.1% 8271 interrupts.CPU157.PMI:Performance_monitoring_interrupts
5509 ± 35% +50.1% 8271 interrupts.CPU158.NMI:Non-maskable_interrupts
5509 ± 35% +50.1% 8271 interrupts.CPU158.PMI:Performance_monitoring_interrupts
15130 ± 14% -18.1% 12396 ± 8% interrupts.CPU168.CAL:Function_call_interrupts
4137 ± 15% +44.3% 5970 ± 26% interrupts.CPU48.CAL:Function_call_interrupts
336.00 ± 6% +60.0% 537.75 ± 31% interrupts.CPU48.RES:Rescheduling_interrupts
0.75 -0.0 0.73 perf-stat.i.branch-miss-rate%
8.192e+08 -2.2% 8.01e+08 perf-stat.i.branch-misses
0.98 -1.4% 0.97 perf-stat.i.cpi
1.7e+11 +1.5% 1.725e+11 perf-stat.i.dTLB-loads
1.055e+11 +2.7% 1.084e+11 perf-stat.i.dTLB-stores
7.304e+08 -2.5% 7.123e+08 perf-stat.i.iTLB-load-misses
5.6e+11 +1.6% 5.688e+11 perf-stat.i.instructions
775.04 +4.2% 807.76 perf-stat.i.instructions-per-iTLB-miss
1.02 +1.5% 1.04 perf-stat.i.ipc
2015 +1.5% 2046 perf-stat.i.metric.M/sec
0.73 -0.0 0.72 perf-stat.overall.branch-miss-rate%
0.98 -1.5% 0.96 perf-stat.overall.cpi
0.00 -0.0 0.00 perf-stat.overall.dTLB-store-miss-rate%
764.55 +4.1% 796.24 perf-stat.overall.instructions-per-iTLB-miss
1.02 +1.5% 1.04 perf-stat.overall.ipc
841233 +4.0% 874479 perf-stat.overall.path-length
8.164e+08 -2.2% 7.983e+08 perf-stat.ps.branch-misses
1.695e+11 +1.5% 1.72e+11 perf-stat.ps.dTLB-loads
1.052e+11 +2.7% 1.08e+11 perf-stat.ps.dTLB-stores
7.301e+08 -2.5% 7.119e+08 perf-stat.ps.iTLB-load-misses
5.582e+11 +1.6% 5.668e+11 perf-stat.ps.instructions
1.689e+14 +1.5% 1.715e+14 perf-stat.total.instructions
50.20 -1.4 48.82 perf-profile.calltrace.cycles-pp.__GI___libc_read
40.68 -1.2 39.52 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__GI___libc_read
39.53 -1.1 38.39 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_read
36.75 -1.1 35.70 perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_read
32.27 -0.9 31.36 perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_read
24.69 -0.6 24.14 perf-profile.calltrace.cycles-pp.new_sync_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
22.23 -0.5 21.72 perf-profile.calltrace.cycles-pp.pipe_write.new_sync_write.vfs_write.ksys_write.do_syscall_64
21.04 -0.5 20.55 perf-profile.calltrace.cycles-pp.new_sync_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
18.70 -0.4 18.27 perf-profile.calltrace.cycles-pp.pipe_read.new_sync_read.vfs_read.ksys_read.do_syscall_64
6.80 -0.1 6.65 perf-profile.calltrace.cycles-pp.copy_page_from_iter.pipe_write.new_sync_write.vfs_write.ksys_write
5.39 -0.1 5.26 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.__GI___libc_write
2.96 -0.1 2.84 ± 2% perf-profile.calltrace.cycles-pp.fsnotify.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe
2.27 -0.1 2.15 perf-profile.calltrace.cycles-pp.copyin.copy_page_from_iter.pipe_write.new_sync_write.vfs_write
2.42 -0.1 2.31 ± 2% perf-profile.calltrace.cycles-pp.copyout.copy_page_to_iter.pipe_read.new_sync_read.vfs_read
5.38 -0.1 5.28 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.__GI___libc_read
2.61 -0.1 2.52 perf-profile.calltrace.cycles-pp.mutex_lock.pipe_read.new_sync_read.vfs_read.ksys_read
3.46 -0.1 3.38 perf-profile.calltrace.cycles-pp.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write.ksys_write
2.62 -0.1 2.55 perf-profile.calltrace.cycles-pp.mutex_lock.pipe_write.new_sync_write.vfs_write.ksys_write
2.08 -0.1 2.02 perf-profile.calltrace.cycles-pp.__pthread_disable_asynccancel
0.99 -0.1 0.94 perf-profile.calltrace.cycles-pp.fput_many.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_write
1.04 -0.0 1.00 perf-profile.calltrace.cycles-pp.__prepare_exit_to_usermode.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_write
0.97 -0.0 0.93 ± 2% perf-profile.calltrace.cycles-pp.copy_user_generic_unrolled.copyin.copy_page_from_iter.pipe_write.new_sync_write
1.23 -0.0 1.19 perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.__wake_up_common_lock.pipe_write.new_sync_write.vfs_write
1.11 -0.0 1.08 perf-profile.calltrace.cycles-pp.copy_user_generic_unrolled.copyout.copy_page_to_iter.pipe_read.new_sync_read
1.20 -0.0 1.17 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.pipe_write.new_sync_write.vfs_write.ksys_write
1.01 -0.0 0.98 perf-profile.calltrace.cycles-pp.__prepare_exit_to_usermode.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_read
0.79 -0.0 0.76 perf-profile.calltrace.cycles-pp.___might_sleep.mutex_lock.pipe_read.new_sync_read.vfs_read
1.50 -0.0 1.47 perf-profile.calltrace.cycles-pp.__might_fault.copy_page_from_iter.pipe_write.new_sync_write.vfs_write
1.13 -0.0 1.11 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.pipe_read.new_sync_read.vfs_read.ksys_read
0.79 -0.0 0.77 perf-profile.calltrace.cycles-pp.___might_sleep.copy_page_from_iter.pipe_write.new_sync_write.vfs_write
0.72 -0.0 0.70 perf-profile.calltrace.cycles-pp.__sb_end_write.pipe_write.new_sync_write.vfs_write.ksys_write
0.99 -0.0 0.97 perf-profile.calltrace.cycles-pp.mutex_unlock.pipe_read.new_sync_read.vfs_read.ksys_read
0.00 +0.9 0.92 perf-profile.calltrace.cycles-pp.fsnotify_parent.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
49.09 +1.4 50.48 perf-profile.calltrace.cycles-pp.__GI___libc_write
0.00 +1.5 1.50 ± 5% perf-profile.calltrace.cycles-pp.fsnotify.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe
39.33 +1.6 40.95 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__GI___libc_write
38.18 +1.7 39.84 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_write
35.19 +1.8 37.00 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_write
30.77 +1.8 32.61 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.__GI___libc_write
50.18 -1.4 48.80 perf-profile.children.cycles-pp.__GI___libc_read
36.87 -1.1 35.81 perf-profile.children.cycles-pp.ksys_read
32.66 -0.9 31.73 perf-profile.children.cycles-pp.vfs_read
24.84 -0.6 24.29 perf-profile.children.cycles-pp.new_sync_write
22.51 -0.5 22.00 perf-profile.children.cycles-pp.pipe_write
21.18 -0.5 20.69 perf-profile.children.cycles-pp.new_sync_read
18.94 -0.4 18.50 perf-profile.children.cycles-pp.pipe_read
5.44 -0.2 5.27 perf-profile.children.cycles-pp.mutex_lock
7.06 -0.2 6.90 perf-profile.children.cycles-pp.copy_page_from_iter
6.34 -0.2 6.19 perf-profile.children.cycles-pp.syscall_return_via_sysret
7.28 -0.1 7.13 perf-profile.children.cycles-pp.entry_SYSCALL_64
2.33 -0.1 2.21 perf-profile.children.cycles-pp.copyin
7.14 -0.1 7.03 perf-profile.children.cycles-pp.copy_page_to_iter
2.48 -0.1 2.36 ± 2% perf-profile.children.cycles-pp.copyout
4.78 -0.1 4.67 perf-profile.children.cycles-pp.___might_sleep
2.48 -0.1 2.39 perf-profile.children.cycles-pp.copy_user_generic_unrolled
2.23 -0.1 2.14 perf-profile.children.cycles-pp.__prepare_exit_to_usermode
3.56 -0.1 3.48 perf-profile.children.cycles-pp.__wake_up_common_lock
2.69 -0.1 2.63 perf-profile.children.cycles-pp.__might_sleep
2.41 -0.1 2.35 perf-profile.children.cycles-pp._raw_spin_lock_irq
2.08 -0.1 2.02 perf-profile.children.cycles-pp.__pthread_disable_asynccancel
1.88 -0.1 1.82 perf-profile.children.cycles-pp.fput_many
1.40 -0.0 1.35 perf-profile.children.cycles-pp._raw_spin_lock_irqsave
0.34 -0.0 0.29 perf-profile.children.cycles-pp.fput
1.38 -0.0 1.34 perf-profile.children.cycles-pp.copy_user_enhanced_fast_string
0.24 ± 7% -0.0 0.22 perf-profile.children.cycles-pp.tick_sched_handle
0.92 -0.0 0.90 perf-profile.children.cycles-pp.fpregs_assert_state_consistent
1.28 -0.0 1.26 perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
0.75 -0.0 0.73 perf-profile.children.cycles-pp.__sb_end_write
80.17 +0.5 80.63 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
77.95 +0.5 78.47 perf-profile.children.cycles-pp.do_syscall_64
1.98 +0.9 2.88 perf-profile.children.cycles-pp.fsnotify_parent
3.04 +1.4 4.42 ± 2% perf-profile.children.cycles-pp.fsnotify
49.09 +1.4 50.48 perf-profile.children.cycles-pp.__GI___libc_write
35.45 +1.8 37.22 perf-profile.children.cycles-pp.ksys_write
30.96 +2.0 32.93 perf-profile.children.cycles-pp.vfs_write
6.28 -0.1 6.13 perf-profile.self.cycles-pp.syscall_return_via_sysret
4.68 -0.1 4.58 perf-profile.self.cycles-pp.___might_sleep
2.35 -0.1 2.26 perf-profile.self.cycles-pp.copy_user_generic_unrolled
2.26 -0.1 2.18 perf-profile.self.cycles-pp.mutex_lock
2.61 -0.1 2.54 perf-profile.self.cycles-pp.__GI___libc_write
3.09 -0.1 3.02 perf-profile.self.cycles-pp.pipe_write
2.57 -0.1 2.50 perf-profile.self.cycles-pp.__GI___libc_read
2.26 -0.1 2.19 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe
3.74 -0.1 3.68 perf-profile.self.cycles-pp.entry_SYSCALL_64
0.93 -0.1 0.87 perf-profile.self.cycles-pp.ksys_write
1.38 -0.1 1.32 perf-profile.self.cycles-pp.__prepare_exit_to_usermode
2.31 -0.1 2.25 perf-profile.self.cycles-pp._raw_spin_lock_irq
1.78 -0.1 1.72 perf-profile.self.cycles-pp.fput_many
1.99 -0.1 1.94 perf-profile.self.cycles-pp.__pthread_disable_asynccancel
2.37 -0.0 2.32 perf-profile.self.cycles-pp.__might_sleep
1.14 -0.0 1.10 perf-profile.self.cycles-pp.do_syscall_64
1.36 -0.0 1.31 perf-profile.self.cycles-pp._raw_spin_lock_irqsave
2.22 -0.0 2.18 perf-profile.self.cycles-pp.__pthread_enable_asynccancel
1.87 -0.0 1.83 perf-profile.self.cycles-pp.mutex_unlock
1.34 -0.0 1.31 perf-profile.self.cycles-pp.copy_user_enhanced_fast_string
0.91 -0.0 0.89 perf-profile.self.cycles-pp.file_update_time
0.85 -0.0 0.82 perf-profile.self.cycles-pp.fpregs_assert_state_consistent
0.44 -0.0 0.41 ± 2% perf-profile.self.cycles-pp.touch_atime
0.73 -0.0 0.71 perf-profile.self.cycles-pp.__sb_end_write
1.23 -0.0 1.21 perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
0.21 -0.0 0.20 perf-profile.self.cycles-pp.kill_fasync
2.08 ± 2% +0.4 2.49 ± 4% perf-profile.self.cycles-pp.vfs_write
1.71 +0.8 2.51 perf-profile.self.cycles-pp.fsnotify_parent
2.94 +1.3 4.25 ± 2% perf-profile.self.cycles-pp.fsnotify
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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