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Message-ID: <87wpug7k4r.fsf@yhuang-dev.intel.com>
Date:	Wed, 21 Oct 2015 15:31:32 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
CC:	Ingo Molnar <mingo@...nel.org>
Subject: [lkp] [sched/numa] b52da86e0a: -1.4% will-it-scale.per_thread_ops

FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit b52da86e0ad58f096710977fcda856fd84da9233 ("sched/numa: Fix task_tick_fair() from disabling numa_balancing")


=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/cpufreq_governor/test:
  nhm4/will-it-scale/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/performance/readseek1

commit: 
  e2bf1c4b17aff25f07e0d2952d8c1c66643f33fe
  b52da86e0ad58f096710977fcda856fd84da9233

e2bf1c4b17aff25f b52da86e0ad58f096710977fcd 
---------------- -------------------------- 
         %stddev     %change         %stddev
             \          |                \  
   1868374 ±  0%      -1.4%    1843108 ±  0%  will-it-scale.per_thread_ops
      0.57 ±  0%     +14.1%       0.65 ± 10%  will-it-scale.scalability
     14052 ±  0%     -29.6%       9896 ±  0%  will-it-scale.time.minor_page_faults
    161.75 ± 45%     -53.2%      75.75 ± 23%  cpuidle.C1E-NHM.usage
     14052 ±  0%     -29.6%       9896 ±  0%  time.minor_page_faults
      6943 ±  0%    -100.0%       0.00 ± -1%  proc-vmstat.numa_hint_faults
      6943 ±  0%    -100.0%       0.00 ± -1%  proc-vmstat.numa_hint_faults_local
      7780 ±  0%    -100.0%       0.00 ± -1%  proc-vmstat.numa_pte_updates
      1.19 ±  4%     -14.1%       1.02 ±  4%  perf-profile.cpu-cycles.__fget_light.sys_lseek.entry_SYSCALL_64_fastpath
      5.47 ±  1%     -11.8%       4.83 ±  2%  perf-profile.cpu-cycles.entry_SYSCALL_64
      1.17 ±  6%     -16.7%       0.98 ± 12%  perf-profile.cpu-cycles.fsnotify.vfs_read.sys_read.entry_SYSCALL_64_fastpath
      1.70 ±  4%     -15.0%       1.45 ±  4%  perf-profile.cpu-cycles.shmem_file_llseek.sys_lseek.entry_SYSCALL_64_fastpath
      5.39 ±  1%     -12.8%       4.70 ±  5%  perf-profile.cpu-cycles.sys_lseek.entry_SYSCALL_64_fastpath
    116.50 ± 14%     -35.4%      75.25 ± 13%  sched_debug.cfs_rq[2]:/.load
     95126 ±  8%     +17.5%     111795 ± 10%  sched_debug.cpu#0.nr_load_updates
      2464 ±  6%     -39.4%       1494 ± 29%  sched_debug.cpu#2.curr->pid
    116.50 ± 14%     -35.4%      75.25 ± 13%  sched_debug.cpu#2.load
      1243 ±  2%     +50.4%       1870 ± 22%  sched_debug.cpu#3.curr->pid
     17134 ± 29%   +7834.3%    1359530 ±110%  sched_debug.cpu#4.nr_switches
     17204 ± 29%   +7802.5%    1359602 ±110%  sched_debug.cpu#4.sched_count
      4538 ± 78%  +12299.8%     562734 ±119%  sched_debug.cpu#4.sched_goidle
    950401 ±  4%      -7.9%     875553 ±  4%  sched_debug.cpu#7.avg_idle


nhm4: Nehalem
Memory: 4G


                           proc-vmstat.numa_pte_updates

  8000 ++---------------------------------------------------*---*-*-----*-*-+
       |                                                  *   *     *.*     *
  7000 ++                                                 :                 |
       |                                                  :                 |
       |                                                  :                 |
  6000 ++                                                :                  |
       |                                                 :                  |
  5000 ++                                                :                  |
       |                                                 :                  |
  4000 ++                                                :                  |
       |                                                 :                  |
       |                                                :                   |
  3000 ++                                               :                   |
       *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*..*.*.*.*.*.*.*.*                   |
  2000 ++-------------------------------------------------------------------+


                           proc-vmstat.numa_hint_faults

  7000 ++-------------------------------------------------*-*-*-*-*-*-*-*-*-*
       |                                                  :                 |
  6000 ++                                                 :                 |
       |                                                  :                 |
       |                                                 :                  |
  5000 ++                                                :                  |
       |                                                 :                  |
  4000 ++                                                :                  |
       |                                                 :                  |
  3000 ++                                                :                  |
       |                                                :                   |
       |                                                :                   |
  2000 ++                                               :                   |
       *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*..*.*.*.*.*.*.*.*                   |
  1000 ++-------------------------------------------------------------------+


                        proc-vmstat.numa_hint_faults_local

  7000 ++-------------------------------------------------*-*-*-*-*-*-*-*-*-*
       |                                                  :                 |
  6000 ++                                                 :                 |
       |                                                  :                 |
       |                                                 :                  |
  5000 ++                                                :                  |
       |                                                 :                  |
  4000 ++                                                :                  |
       |                                                 :                  |
  3000 ++                                                :                  |
       |                                                :                   |
       |                                                :                   |
  2000 ++                                               :                   |
       *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*..*.*.*.*.*.*.*.*                   |
  1000 ++-------------------------------------------------------------------+


	[*] bisect-good sample
	[O] bisect-bad  sample

To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml


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,
Ying Huang

View attachment "job.yaml" of type "text/plain" (3410 bytes)

View attachment "reproduce" of type "text/plain" (624 bytes)

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