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Date: Mon, 17 Jan 2022 22:37:45 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Kuniyuki Iwashima <kuniyu@...zon.co.jp>
Cc: Jakub Kicinski <kuba@...nel.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
lkp@...el.com, ying.huang@...el.com, feng.tang@...el.com,
zhengjun.xing@...ux.intel.com, fengwei.yin@...el.com
Subject: [af_unix] afd20b9290: stress-ng.sockdiag.ops_per_sec -26.3%
regression
(this commit was previously reported as
"[af_unix] afd20b9290: stress-ng.sockdiag.ops_per_sec -26.3% regression"
when it's still on linux-next/master
https://lore.kernel.org/all/20211219083847.GA14057@xsang-OptiPlex-9020/
report again as a reminder the regression still exists on mainline)
Greeting,
FYI, we noticed a -26.3% regression of stress-ng.sockdiag.ops_per_sec due to commit:
commit: afd20b9290e184c203fe22f2d6b80dc7127ba724 ("af_unix: Replace the big lock with small locks.")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: stress-ng
on test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz with 128G memory
with following parameters:
nr_threads: 100%
testtime: 60s
class: network
test: sockdiag
cpufreq_governor: performance
ucode: 0xd000280
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
sudo bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
sudo bin/lkp run generated-yaml-file
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
=========================================================================================
class/compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime/ucode:
network/gcc-9/performance/x86_64-rhel-8.3/100%/debian-10.4-x86_64-20200603.cgz/lkp-icl-2sp6/sockdiag/stress-ng/60s/0xd000280
commit:
e6b4b87389 ("af_unix: Save hash in sk_hash.")
afd20b9290 ("af_unix: Replace the big lock with small locks.")
e6b4b873896f0e92 afd20b9290e184c203fe22f2d6b
---------------- ---------------------------
%stddev %change %stddev
\ | \
3.129e+08 -26.3% 2.306e+08 stress-ng.sockdiag.ops
5214640 -26.3% 3842782 stress-ng.sockdiag.ops_per_sec
82895 -6.9% 77178 stress-ng.time.involuntary_context_switches
103737 -9.5% 93892 stress-ng.time.voluntary_context_switches
7067 -6.3% 6620 vmstat.system.cs
0.05 -0.0 0.04 ± 6% mpstat.cpu.all.soft%
0.13 ± 3% -0.0 0.12 ± 5% mpstat.cpu.all.usr%
1783836 ± 7% -21.6% 1397649 ± 12% numa-vmstat.node1.numa_hit
1689477 ± 8% -22.9% 1303128 ± 13% numa-vmstat.node1.numa_local
894897 ± 22% +46.6% 1312222 ± 11% turbostat.C1E
3.85 ± 55% +3.5 7.33 ± 10% turbostat.C1E%
2451882 ± 4% -24.3% 1855676 ± 2% numa-numastat.node0.local_node
2501404 ± 3% -23.8% 1905161 ± 3% numa-numastat.node0.numa_hit
2437526 -24.1% 1849165 ± 3% numa-numastat.node1.local_node
2503693 -23.5% 1915338 ± 3% numa-numastat.node1.numa_hit
7977 ± 19% -22.6% 6178 ± 8% softirqs.CPU2.RCU
7989 ± 25% -23.4% 6121 ± 3% softirqs.CPU25.RCU
8011 ± 24% -26.8% 5862 ± 3% softirqs.CPU8.RCU
890963 ± 3% -17.4% 735738 softirqs.RCU
74920 -3.6% 72233 proc-vmstat.nr_slab_unreclaimable
5007343 -23.7% 3821593 proc-vmstat.numa_hit
4891675 -24.2% 3705934 proc-vmstat.numa_local
5007443 -23.7% 3821701 proc-vmstat.pgalloc_normal
4796850 -24.7% 3610677 proc-vmstat.pgfree
0.71 ± 17% -41.1% 0.42 perf-stat.i.MPKI
0.12 ± 12% -0.0 0.10 ± 8% perf-stat.i.branch-miss-rate%
10044516 ± 13% -23.6% 7678759 ± 3% perf-stat.i.cache-misses
42758000 ± 6% -28.5% 30580693 perf-stat.i.cache-references
6920 -5.9% 6510 perf-stat.i.context-switches
571.08 ± 2% -13.4% 494.31 ± 2% perf-stat.i.cpu-migrations
39356 ± 12% +29.2% 50865 ± 3% perf-stat.i.cycles-between-cache-misses
0.01 ± 36% -0.0 0.00 ± 24% perf-stat.i.dTLB-load-miss-rate%
0.01 ± 23% -0.0 0.00 ± 14% perf-stat.i.dTLB-store-miss-rate%
8.447e+08 +27.0% 1.073e+09 perf-stat.i.dTLB-stores
13.36 -2.2% 13.07 perf-stat.i.major-faults
364.56 ± 9% -24.9% 273.60 perf-stat.i.metric.K/sec
350.63 +0.7% 353.23 perf-stat.i.metric.M/sec
87.88 +1.4 89.23 perf-stat.i.node-load-miss-rate%
1381985 ± 12% -27.7% 999393 ± 3% perf-stat.i.node-load-misses
198989 ± 6% -31.9% 135458 ± 4% perf-stat.i.node-loads
4305132 -27.4% 3124590 perf-stat.i.node-store-misses
581796 ± 5% -25.6% 432807 ± 3% perf-stat.i.node-stores
0.46 ± 5% -28.7% 0.33 perf-stat.overall.MPKI
39894 ± 12% +28.6% 51310 ± 3% perf-stat.overall.cycles-between-cache-misses
0.01 ± 22% -0.0 0.00 ± 12% perf-stat.overall.dTLB-store-miss-rate%
9916145 ± 13% -23.8% 7560589 ± 3% perf-stat.ps.cache-misses
42385546 ± 5% -28.7% 30225277 perf-stat.ps.cache-references
6786 -5.9% 6385 perf-stat.ps.context-switches
562.65 ± 2% -13.5% 486.73 ± 2% perf-stat.ps.cpu-migrations
8.314e+08 +26.8% 1.055e+09 perf-stat.ps.dTLB-stores
1359293 ± 11% -27.7% 982331 ± 3% perf-stat.ps.node-load-misses
205280 ± 6% -33.3% 136979 ± 5% perf-stat.ps.node-loads
4237942 -27.5% 3070934 perf-stat.ps.node-store-misses
585102 ± 5% -26.6% 429702 ± 3% perf-stat.ps.node-stores
5.844e+12 +0.9% 5.897e+12 perf-stat.total.instructions
99.26 +0.5 99.72 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.sendmsg
99.25 +0.5 99.72 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendmsg
99.25 +0.5 99.72 perf-profile.calltrace.cycles-pp.__sys_sendmsg.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendmsg
99.26 +0.5 99.73 perf-profile.calltrace.cycles-pp.sendmsg
99.24 +0.5 99.71 perf-profile.calltrace.cycles-pp.____sys_sendmsg.___sys_sendmsg.__sys_sendmsg.do_syscall_64.entry_SYSCALL_64_after_hwframe
99.24 +0.5 99.71 perf-profile.calltrace.cycles-pp.sock_sendmsg.____sys_sendmsg.___sys_sendmsg.__sys_sendmsg.do_syscall_64
99.25 +0.5 99.72 perf-profile.calltrace.cycles-pp.___sys_sendmsg.__sys_sendmsg.do_syscall_64.entry_SYSCALL_64_after_hwframe.sendmsg
99.24 +0.5 99.71 perf-profile.calltrace.cycles-pp.netlink_sendmsg.sock_sendmsg.____sys_sendmsg.___sys_sendmsg.__sys_sendmsg
97.56 +0.5 98.04 perf-profile.calltrace.cycles-pp.osq_lock.__mutex_lock.sock_diag_rcv.netlink_unicast.netlink_sendmsg
99.22 +0.5 99.70 perf-profile.calltrace.cycles-pp.netlink_unicast.netlink_sendmsg.sock_sendmsg.____sys_sendmsg.___sys_sendmsg
99.19 +0.5 99.68 perf-profile.calltrace.cycles-pp.sock_diag_rcv.netlink_unicast.netlink_sendmsg.sock_sendmsg.____sys_sendmsg
98.41 +0.5 98.90 perf-profile.calltrace.cycles-pp.__mutex_lock.sock_diag_rcv.netlink_unicast.netlink_sendmsg.sock_sendmsg
0.48 -0.4 0.07 ± 5% perf-profile.children.cycles-pp.recvmsg
0.46 ± 2% -0.4 0.06 perf-profile.children.cycles-pp.___sys_recvmsg
0.47 ± 2% -0.4 0.07 ± 6% perf-profile.children.cycles-pp.__sys_recvmsg
0.45 -0.4 0.06 ± 9% perf-profile.children.cycles-pp.____sys_recvmsg
1.14 -0.4 0.76 perf-profile.children.cycles-pp.netlink_dump
1.09 -0.4 0.73 perf-profile.children.cycles-pp.unix_diag_dump
0.66 -0.3 0.37 ± 2% perf-profile.children.cycles-pp._raw_spin_lock
0.26 ± 2% -0.1 0.19 ± 2% perf-profile.children.cycles-pp.sk_diag_fill
0.07 ± 5% -0.0 0.04 ± 57% perf-profile.children.cycles-pp.__x64_sys_socket
0.07 ± 5% -0.0 0.04 ± 57% perf-profile.children.cycles-pp.__sys_socket
0.07 -0.0 0.04 ± 57% perf-profile.children.cycles-pp.__close
0.12 ± 4% -0.0 0.08 ± 5% perf-profile.children.cycles-pp.memset_erms
0.11 ± 4% -0.0 0.08 ± 5% perf-profile.children.cycles-pp.nla_put
0.08 ± 5% -0.0 0.06 perf-profile.children.cycles-pp.__nlmsg_put
0.08 ± 5% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.__socket
0.08 -0.0 0.06 ± 7% perf-profile.children.cycles-pp.__nla_put
0.07 -0.0 0.05 perf-profile.children.cycles-pp.__nla_reserve
0.07 ± 5% -0.0 0.05 ± 8% perf-profile.children.cycles-pp.rcu_core
0.08 ± 5% -0.0 0.06 perf-profile.children.cycles-pp.__softirqentry_text_start
0.07 -0.0 0.05 ± 8% perf-profile.children.cycles-pp.rcu_do_batch
0.06 ± 7% -0.0 0.05 perf-profile.children.cycles-pp.sock_i_ino
99.89 +0.0 99.92 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe
99.89 +0.0 99.92 perf-profile.children.cycles-pp.do_syscall_64
0.00 +0.1 0.08 perf-profile.children.cycles-pp.__raw_callee_save___native_queued_spin_unlock
99.26 +0.5 99.73 perf-profile.children.cycles-pp.sendmsg
99.25 +0.5 99.72 perf-profile.children.cycles-pp.__sys_sendmsg
99.25 +0.5 99.72 perf-profile.children.cycles-pp.___sys_sendmsg
99.24 +0.5 99.71 perf-profile.children.cycles-pp.____sys_sendmsg
99.24 +0.5 99.71 perf-profile.children.cycles-pp.sock_sendmsg
99.24 +0.5 99.71 perf-profile.children.cycles-pp.netlink_sendmsg
99.22 +0.5 99.70 perf-profile.children.cycles-pp.netlink_unicast
97.59 +0.5 98.08 perf-profile.children.cycles-pp.osq_lock
99.19 +0.5 99.68 perf-profile.children.cycles-pp.sock_diag_rcv
98.41 +0.5 98.90 perf-profile.children.cycles-pp.__mutex_lock
0.12 ± 5% -0.0 0.08 ± 5% perf-profile.self.cycles-pp.unix_diag_dump
0.11 -0.0 0.08 perf-profile.self.cycles-pp.memset_erms
0.00 +0.1 0.06 perf-profile.self.cycles-pp.__raw_callee_save___native_queued_spin_unlock
0.28 ± 5% +0.1 0.35 ± 2% perf-profile.self.cycles-pp._raw_spin_lock
97.23 +0.5 97.72 perf-profile.self.cycles-pp.osq_lock
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
---
0DAY/LKP+ Test Infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation
Thanks,
Oliver Sang
View attachment "config-5.16.0-rc2-00840-gafd20b9290e1" of type "text/plain" (173572 bytes)
View attachment "job-script" of type "text/plain" (7906 bytes)
View attachment "job.yaml" of type "text/plain" (5389 bytes)
View attachment "reproduce" of type "text/plain" (342 bytes)
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