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Message-ID: <202212311546.755a3ed7-oliver.sang@intel.com>
Date:   Sat, 31 Dec 2022 15:18:23 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     John Johansen <john.johansen@...onical.com>
CC:     <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
        <linux-kernel@...r.kernel.org>, <apparmor@...ts.ubuntu.com>,
        <ying.huang@...el.com>, <feng.tang@...el.com>,
        <zhengjun.xing@...ux.intel.com>, <fengwei.yin@...el.com>
Subject: [linus:master] [apparmor]  1ad22fcc4d:  stress-ng.kill.ops_per_sec
 -42.5% regression


Greeting,

FYI, we noticed a -42.5% regression of stress-ng.kill.ops_per_sec due to commit:


commit: 1ad22fcc4d0d2fb2e0f35aed555a86d016d5e590 ("apparmor: rework profile->rules to be a list")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: stress-ng
on test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory
with following parameters:

	nr_threads: 10%
	disk: 1HDD
	testtime: 60s
	fs: ext4
	class: os
	test: kill
	cpufreq_governor: performance




If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Link: https://lore.kernel.org/oe-lkp/202212311546.755a3ed7-oliver.sang@intel.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/disk/fs/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
  os/gcc-11/performance/1HDD/ext4/x86_64-rhel-8.3/10%/debian-11.1-x86_64-20220510.cgz/lkp-csl-2sp7/kill/stress-ng/60s

commit: 
  217af7e2f4 ("apparmor: refactor profile rules and attachments")
  1ad22fcc4d ("apparmor: rework profile->rules to be a list")

217af7e2f4deb629 1ad22fcc4d0d2fb2e0f35aed555 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
      2820 ±  2%     -42.7%       1616        stress-ng.kill.kill_calls_per_sec
    511090           -42.5%     293660        stress-ng.kill.ops
      8518           -42.5%       4894        stress-ng.kill.ops_per_sec
      3778 ±  2%     -58.4%       1571 ±  3%  stress-ng.time.involuntary_context_switches
    859945 ±  3%     -29.7%     604857 ±  2%  stress-ng.time.voluntary_context_switches
     70351 ± 12%     +22.0%      85795 ±  8%  meminfo.AnonHugePages
      0.05 ±  7%     -22.6%       0.04        turbostat.IPC
     28627 ±  3%     -27.0%      20903 ±  2%  vmstat.system.cs
    128187 ± 92%     +78.6%     228921 ± 49%  sched_debug.cfs_rq:/.min_vruntime.max
     20901 ±107%    +124.7%      46965 ± 59%  sched_debug.cfs_rq:/.min_vruntime.stddev
    -24201          -149.5%      11969 ± 74%  sched_debug.cfs_rq:/.spread0.avg
     69818 ±123%    +170.9%     189126 ± 59%  sched_debug.cfs_rq:/.spread0.max
     20904 ±107%    +124.7%      46965 ± 59%  sched_debug.cfs_rq:/.spread0.stddev
      1.19 ±  8%      +6.3        7.48 ± 10%  perf-profile.calltrace.cycles-pp.aa_may_signal.apparmor_task_kill.security_task_kill.kill_something_info.__x64_sys_kill
      0.58 ±  8%      -0.2        0.40 ± 13%  perf-profile.children.cycles-pp.check_kill_permission
      0.30 ± 12%      -0.1        0.16 ±  8%  perf-profile.children.cycles-pp.profile_signal_perm
      0.20 ± 10%      -0.1        0.12 ± 13%  perf-profile.children.cycles-pp.audit_signal_info_syscall
      0.21 ± 23%      -0.1        0.14 ± 12%  perf-profile.children.cycles-pp.pause
      0.18 ± 16%      -0.1        0.11 ± 20%  perf-profile.children.cycles-pp.__task_pid_nr_ns
      0.15 ± 10%      -0.1        0.09 ± 14%  perf-profile.children.cycles-pp.__kill_pgrp_info
      0.16 ± 13%      -0.1        0.10 ± 14%  perf-profile.children.cycles-pp.exit_to_user_mode_loop
      0.16 ± 15%      -0.1        0.11 ± 12%  perf-profile.children.cycles-pp.exit_to_user_mode_prepare
      0.10 ±  9%      -0.0        0.06 ± 11%  perf-profile.children.cycles-pp.audit_signal_info
      0.07 ± 18%      -0.0        0.04 ± 71%  perf-profile.children.cycles-pp.alloc_empty_file
      0.07 ± 18%      -0.0        0.04 ± 71%  perf-profile.children.cycles-pp.__alloc_file
      0.11 ±  7%      -0.0        0.08 ± 16%  perf-profile.children.cycles-pp.do_send_sig_info
      0.10 ± 12%      -0.0        0.06 ± 14%  perf-profile.children.cycles-pp.__send_signal_locked
      0.10 ± 17%      -0.0        0.06 ± 19%  perf-profile.children.cycles-pp.arch_do_signal_or_restart
      0.06 ± 14%      +0.0        0.11 ± 18%  perf-profile.children.cycles-pp.ns_capable
      0.06 ± 14%      +0.0        0.11 ± 18%  perf-profile.children.cycles-pp.security_capable
      0.06 ± 14%      +0.0        0.11 ± 18%  perf-profile.children.cycles-pp.apparmor_capable
      0.09 ± 11%      +0.0        0.14 ± 23%  perf-profile.children.cycles-pp.kernel_clone
      0.09 ±  8%      +0.0        0.14 ± 24%  perf-profile.children.cycles-pp.copy_process
      0.04 ± 71%      +0.0        0.08 ± 18%  perf-profile.children.cycles-pp.__do_sys_clone
      0.07 ± 18%      +0.1        0.16 ±  9%  perf-profile.children.cycles-pp.__x64_sys_exit_group
      0.07 ± 18%      +0.1        0.16 ±  9%  perf-profile.children.cycles-pp.do_group_exit
      0.07 ± 18%      +0.1        0.16 ±  9%  perf-profile.children.cycles-pp.do_exit
      0.06 ± 47%      +0.1        0.15 ±  8%  perf-profile.children.cycles-pp.exit_notify
      0.29 ± 12%      +0.1        0.38 ± 11%  perf-profile.children.cycles-pp.queued_read_lock_slowpath
      0.15 ± 10%      +0.1        0.28 ± 13%  perf-profile.children.cycles-pp.queued_write_lock_slowpath
      0.36 ± 10%      +0.1        0.50 ± 10%  perf-profile.children.cycles-pp.native_queued_spin_lock_slowpath
      1.24 ±  8%      +6.3        7.56 ± 10%  perf-profile.children.cycles-pp.aa_may_signal
      0.28 ± 12%      -0.1        0.15 ± 10%  perf-profile.self.cycles-pp.profile_signal_perm
      0.23 ± 16%      -0.1        0.12 ± 17%  perf-profile.self.cycles-pp.check_kill_permission
      0.20 ± 10%      -0.1        0.12 ± 13%  perf-profile.self.cycles-pp.audit_signal_info_syscall
      0.15 ± 11%      -0.1        0.08 ± 13%  perf-profile.self.cycles-pp.kill_something_info
      0.16 ±  6%      -0.1        0.10 ± 20%  perf-profile.self.cycles-pp.security_task_kill
      0.14 ± 11%      -0.1        0.09 ± 14%  perf-profile.self.cycles-pp.__kill_pgrp_info
      0.16 ± 15%      -0.1        0.10 ± 22%  perf-profile.self.cycles-pp.__task_pid_nr_ns
      0.08 ± 13%      -0.1        0.04 ± 71%  perf-profile.self.cycles-pp.audit_signal_info
      0.06 ± 14%      +0.0        0.11 ± 16%  perf-profile.self.cycles-pp.apparmor_capable
      0.36 ± 10%      +0.1        0.50 ± 10%  perf-profile.self.cycles-pp.native_queued_spin_lock_slowpath
      0.96 ±  8%      +6.4        7.38 ± 10%  perf-profile.self.cycles-pp.aa_may_signal
     16.17           +18.8%      19.21        perf-stat.i.MPKI
 8.529e+08           -30.2%  5.952e+08        perf-stat.i.branch-instructions
      0.68 ±  3%      +0.1        0.79 ±  2%  perf-stat.i.branch-miss-rate%
   7256065 ±  3%      -7.7%    6698864 ±  2%  perf-stat.i.branch-misses
     13.08 ±  3%      +6.0       19.07        perf-stat.i.cache-miss-rate%
   9361692 ±  2%     +16.3%   10884924 ±  2%  perf-stat.i.cache-misses
  71450858           -20.7%   56687571 ±  2%  perf-stat.i.cache-references
     29596 ±  3%     -27.5%      21452 ±  2%  perf-stat.i.context-switches
      6.21           +50.4%       9.34        perf-stat.i.cpi
      2974 ±  2%     -14.4%       2547 ±  2%  perf-stat.i.cycles-between-cache-misses
      0.02 ± 13%      +0.0        0.03 ±  6%  perf-stat.i.dTLB-load-miss-rate%
 1.408e+09           -32.2%  9.544e+08        perf-stat.i.dTLB-loads
 7.763e+08           -33.2%  5.183e+08        perf-stat.i.dTLB-stores
     34.02            -3.0       31.06        perf-stat.i.iTLB-load-miss-rate%
   1109352 ±  2%     -18.6%     903511        perf-stat.i.iTLB-load-misses
   2150307            -6.8%    2003881        perf-stat.i.iTLB-loads
 4.552e+09           -30.7%  3.153e+09        perf-stat.i.instructions
      4134 ±  2%     -15.1%       3508        perf-stat.i.instructions-per-iTLB-miss
      0.19           -26.4%       0.14        perf-stat.i.ipc
    814.65           -16.5%     680.21        perf-stat.i.metric.K/sec
     31.63           -31.9%      21.53        perf-stat.i.metric.M/sec
     80.72 ±  3%      +9.8       90.56        perf-stat.i.node-load-miss-rate%
    325431 ±  5%    +970.6%    3483935 ±  2%  perf-stat.i.node-load-misses
     79936 ± 19%    +323.7%     338676 ±  6%  perf-stat.i.node-loads
   4260901 ±  2%     -34.5%    2792405        perf-stat.i.node-store-misses
     15.70           +14.6%      18.00        perf-stat.overall.MPKI
      0.85 ±  2%      +0.3        1.12 ±  2%  perf-stat.overall.branch-miss-rate%
     13.11 ±  2%      +6.1       19.20        perf-stat.overall.cache-miss-rate%
      6.03           +44.8%       8.73        perf-stat.overall.cpi
      2931           -13.8%       2527 ±  2%  perf-stat.overall.cycles-between-cache-misses
      0.02 ± 10%      +0.0        0.03 ±  7%  perf-stat.overall.dTLB-load-miss-rate%
     34.03            -3.0       31.07        perf-stat.overall.iTLB-load-miss-rate%
      4104 ±  2%     -15.0%       3487        perf-stat.overall.instructions-per-iTLB-miss
      0.17           -30.9%       0.11        perf-stat.overall.ipc
     80.44 ±  3%     +10.7       91.14        perf-stat.overall.node-load-miss-rate%
  8.39e+08           -30.3%  5.852e+08        perf-stat.ps.branch-instructions
   7111005 ±  2%      -7.8%    6555177 ±  2%  perf-stat.ps.branch-misses
   9215998 ±  2%     +16.3%   10714798 ±  2%  perf-stat.ps.cache-misses
  70327211           -20.7%   55796363 ±  2%  perf-stat.ps.cache-references
     29136 ±  3%     -27.5%      21118 ±  2%  perf-stat.ps.context-switches
 1.385e+09           -32.2%  9.386e+08        perf-stat.ps.dTLB-loads
  7.64e+08           -33.3%  5.099e+08        perf-stat.ps.dTLB-stores
   1091797 ±  2%     -18.6%     888828        perf-stat.ps.iTLB-load-misses
   2116297            -6.8%    1971620        perf-stat.ps.iTLB-loads
 4.478e+09           -30.8%    3.1e+09        perf-stat.ps.instructions
    320258 ±  5%    +970.9%    3429628 ±  2%  perf-stat.ps.node-load-misses
     78661 ± 19%    +323.8%     333386 ±  6%  perf-stat.ps.node-loads
   4195116 ±  2%     -34.5%    2749032        perf-stat.ps.node-store-misses
 2.847e+11           -31.2%  1.959e+11        perf-stat.total.instructions




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.


-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests



View attachment "config-6.0.0-rc1-00054-g1ad22fcc4d0d" of type "text/plain" (164332 bytes)

View attachment "job-script" of type "text/plain" (8425 bytes)

View attachment "job.yaml" of type "text/plain" (5788 bytes)

View attachment "reproduce" of type "text/plain" (532 bytes)

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