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Message-ID: <20160328062933.GA4389@yexl-desktop>
Date:	Mon, 28 Mar 2016 14:29:33 +0800
From:	kernel test robot <xiaolong.ye@...el.com>
To:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc:	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [cpufreq] a4675fbc4a:unixbench.score +37.4% improvement

FYI, we noticed that unixbench.score +37.4% improvement with your commit. 


https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit a4675fbc4a7abe072ac6ba38c252f22a91ebcd94 ("cpufreq: intel_pstate: Replace timers with utilization update callbacks")


commit: 
  34e2c555f3e13c90e9284e23d00f03be8a6e06c5
  a4675fbc4a7abe072ac6ba38c252f22a91ebcd94

34e2c555f3e13c90 a4675fbc4a7abe072ac6ba38c2
---------------- --------------------------
         %stddev     %change         %stddev
             \          |                \
    471.50 ±  0%     +37.4%     647.98 ±  0%  unixbench.score
    181102 ±  0%     +36.8%     247709 ±  0%  unixbench.time.involuntary_context_switches
   8448017 ±  0%     +36.6%   11542098 ±  0%  unixbench.time.minor_page_faults
      8726 ±  0%     +21.9%      10639 ±  0%  vmstat.system.cs
    181102 ±  0%     +36.8%     247709 ±  0%  time.involuntary_context_switches
   8448017 ±  0%     +36.6%   11542098 ±  0%  time.minor_page_faults
      5958 ±  4%      -7.9%       5488 ±  2%  slabinfo.kmalloc-256.active_objs
      6512 ±  6%      -8.9%       5930 ±  1%  slabinfo.kmalloc-256.num_objs
     22373 ±  4%      +8.6%      24291 ±  4%  slabinfo.kmalloc-32.active_objs
     22373 ±  4%      +8.6%      24291 ±  4%  slabinfo.kmalloc-32.num_objs
      4664 ± 19%     -37.3%       2925 ± 26%  cpuidle.C1-HSW.usage
    886.25 ±  3%     +50.4%       1333 ± 10%  cpuidle.C1E-HSW.usage
  45236605 ±  4%     -52.0%   21702696 ±  4%  cpuidle.C3-HSW.time
    395591 ±  0%     +22.6%     485056 ±  0%  cpuidle.C6-HSW.usage
     11660 ±  5%     +33.9%      15610 ±  6%  cpuidle.POLL.usage
   6819262 ±  0%     +36.2%    9290485 ±  0%  proc-vmstat.numa_hit
   6819262 ±  0%     +36.2%    9290485 ±  0%  proc-vmstat.numa_local
    910141 ±  0%     +36.2%    1239946 ±  0%  proc-vmstat.pgalloc_dma32
   5915149 ±  0%     +36.2%    8057456 ±  0%  proc-vmstat.pgalloc_normal
   8533297 ±  0%     +36.3%   11626985 ±  0%  proc-vmstat.pgfault
   6821913 ±  0%     +36.2%    9293880 ±  0%  proc-vmstat.pgfree
      6.19 ±  0%      -1.9%       6.07 ±  0%  turbostat.%Busy
     85.75 ±  0%     +54.8%     132.75 ±  0%  turbostat.Avg_MHz
      1384 ±  0%     +58.1%       2188 ±  0%  turbostat.Bzy_MHz
     16.87 ±  0%     +11.1%      18.74 ±  0%  turbostat.CPU%c1
      4.39 ±  4%     -57.3%       1.88 ±  4%  turbostat.CPU%c3
     17.55 ±  0%     +14.4%      20.07 ±  0%  turbostat.PkgWatt
     31.10 ± 10%     +48.0%      46.02 ± 16%  sched_debug.cfs_rq:/.load_avg.avg
     29.51 ± 21%    +110.2%      62.02 ± 36%  sched_debug.cfs_rq:/.load_avg.stddev
    132.14 ±  6%     +11.6%     147.44 ±  2%  sched_debug.cfs_rq:/.util_avg.avg
    630069 ± 13%     -30.9%     435560 ±  5%  sched_debug.cpu.avg_idle.min
    116621 ± 17%     +51.1%     176162 ±  2%  sched_debug.cpu.avg_idle.stddev
      4052 ±  3%     +17.5%       4763 ±  4%  sched_debug.cpu.nr_load_updates.min
     18741 ±  1%     +19.3%      22354 ±  0%  sched_debug.cpu.nr_switches.avg
     33330 ±  6%     +20.5%      40157 ±  9%  sched_debug.cpu.nr_switches.max
      8418 ±  4%     +30.5%      10985 ±  5%  sched_debug.cpu.nr_switches.min
      8423 ±  4%     +30.5%      10991 ±  5%  sched_debug.cpu.sched_count.min
      7484 ±  1%     +15.7%       8655 ±  0%  sched_debug.cpu.sched_goidle.avg
     13946 ±  7%     +18.9%      16585 ± 10%  sched_debug.cpu.sched_goidle.max
      3078 ±  4%     +28.0%       3941 ±  4%  sched_debug.cpu.sched_goidle.min
      7645 ±  1%     +15.5%       8831 ±  0%  sched_debug.cpu.ttwu_count.avg
      2614 ±  4%     +33.9%       3500 ±  3%  sched_debug.cpu.ttwu_count.min
      4499 ±  0%     +27.2%       5723 ±  0%  sched_debug.cpu.ttwu_local.avg
      8842 ±  4%     +14.6%      10134 ±  8%  sched_debug.cpu.ttwu_local.max
      2322 ±  3%     +30.8%       3038 ±  5%  sched_debug.cpu.ttwu_local.min
      2220 ±  4%     +13.8%       2527 ±  7%  sched_debug.cpu.ttwu_local.stddev





                                  unixbench.score

  700 ++--------------------------------------------------------------------+
      OO OO OO OO OO OO OOO OO OO OO OO OOO OO OO OO OO OO OOO OO OO OO     |
  600 ++                                                                    |
      |                                                                     |
  500 ++                                                                    |
      **.**.**.**.**  *.***.**.**.**.**.***.**.**.**.**.**.***.**.**.**.**.**
  400 ++           :  :                                                     |
      |            :  :                                                     |
  300 ++            : :                                                     |
      |             : :                                                     |
  200 ++            ::                                                      |
      |             ::                                                      |
  100 ++             :                                                      |
      |              :                                                      |
    0 ++-------------*------------------------------------------------------+


                           unixbench.time.minor_page_faults

  1.2e+07 OO-OO-O-O-OOO-OO-OOO-OOO-OO-OOO-OOO--O---O--O------OO-OO-----O----+
          |      O                            O  OO  O O OO O     O OO      |
    1e+07 ++                                                                |
          |                                                                 |
          **.**.***.***  *.***.***.**.***.***.**.***.***.**.***.***.**.***.**
    8e+06 ++          :  :                                                  |
          |           :  :                                                  |
    6e+06 ++           : :                                                  |
          |            : :                                                  |
    4e+06 ++           : :                                                  |
          |            ::                                                   |
          |            ::                                                   |
    2e+06 ++            :                                                   |
          |             :                                                   |
        0 ++------------*---------------------------------------------------+


                     unixbench.time.involuntary_context_switches

  300000 ++-----------------------------------------------------------------+
         |                                                                  |
  250000 OO O  O O     OO OO OOO OO OOO OO OOO OO  O  OO  OO OOO OO O O     |
         |   O  O  OO O                          O  O   O            O      |
         |                                                                  |
  200000 ++                                                                 |
         **.**.***.**.* *.**.***.**.***.**.***.***.**.***.**.***.**.***.**.**
  150000 ++           : :                                                   |
         |            : :                                                   |
  100000 ++           : :                                                   |
         |             ::                                                   |
         |             :                                                    |
   50000 ++            :                                                    |
         |             :                                                    |
       0 ++------------*----------------------------------------------------+


                                time.minor_page_faults

  1.2e+07 OO-OO-O-O-OOO-OO-OOO-OOO-OO-OOO-OOO--O---O--O------OO-OO-----O----+
          |      O                            O  OO  O O OO O     O OO      |
    1e+07 ++                                                                |
          |                                                                 |
          **.**.***.***  *.***.***.**.***.***.**.***.***.**.***.***.**.***.**
    8e+06 ++          :  :                                                  |
          |           :  :                                                  |
    6e+06 ++           : :                                                  |
          |            : :                                                  |
    4e+06 ++           : :                                                  |
          |            ::                                                   |
          |            ::                                                   |
    2e+06 ++            :                                                   |
          |             :                                                   |
        0 ++------------*---------------------------------------------------+


                          time.involuntary_context_switches

  300000 ++-----------------------------------------------------------------+
         |                                                                  |
  250000 OO O  O O     OO OO OOO OO OOO OO OOO OO  O  OO  OO OOO OO O O     |
         |   O  O  OO O                          O  O   O            O      |
         |                                                                  |
  200000 ++                                                                 |
         **.**.***.**.* *.**.***.**.***.**.***.***.**.***.**.***.**.***.**.**
  150000 ++           : :                                                   |
         |            : :                                                   |
  100000 ++           : :                                                   |
         |             ::                                                   |
         |             :                                                    |
   50000 ++            :                                                    |
         |             :                                                    |
       0 ++------------*----------------------------------------------------+




	[*] 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,
Xiaolong Ye

View attachment "job.yaml" of type "text/plain" (3319 bytes)

View attachment "reproduce" of type "text/plain" (1500 bytes)

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