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Date:	Wed, 11 Nov 2015 13:22:23 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Philippe Longepe <philippe.longepe@...ux.intel.com>
CC:	0day robot <fengguang.wu@...el.com>
Subject: [lkp] [intel_pstate] 10e4d2e8d3: -13.9%
 will-it-scale.per_thread_ops

FYI, we noticed the below changes on

https://github.com/0day-ci/linux Philippe-Longepe/intel_pstate-Use-the-cpu-load-to-determine-the-PercentPerformance/20151103-173647
commit 10e4d2e8d38473d3964068469dd03f8c69fca4e2 ("intel_pstate: Use the cpu load to determine the PercentPerformance")


=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/cpufreq_governor/test:
  lituya/will-it-scale/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/powersave/page_fault2

commit: 
  1ab68460b1d0671968b35e04f21efcf1ce051916
  10e4d2e8d38473d3964068469dd03f8c69fca4e2

1ab68460b1d06719 10e4d2e8d38473d3964068469d 
---------------- -------------------------- 
         %stddev     %change         %stddev
             \          |                \  
    298605 ±  0%     -13.9%     257084 ±  0%  will-it-scale.per_thread_ops
      6070 ±  3%     -12.0%       5344 ±  4%  will-it-scale.time.involuntary_context_switches
   2082000 ±  0%      -4.4%    1990194 ±  4%  will-it-scale.time.maximum_resident_set_size
 2.431e+08 ±  0%     -27.8%  1.755e+08 ±  0%  will-it-scale.time.minor_page_faults
    317.00 ±  0%     -15.8%     267.00 ±  0%  will-it-scale.time.percent_of_cpu_this_job_got
    929.86 ±  0%     -17.9%     763.32 ±  0%  will-it-scale.time.system_time
     38.72 ±  0%     +36.8%      52.96 ±  1%  will-it-scale.time.user_time
    160590 ±  0%     -30.9%     110986 ±  0%  will-it-scale.time.voluntary_context_switches
     82310 ±  4%     -10.1%      74007 ±  2%  softirqs.RCU
     76219 ±  1%     -11.4%      67558 ±  2%  softirqs.SCHED
     21099 ±  0%     -12.8%      18403 ±  0%  vmstat.system.cs
     17755 ±  0%      -9.1%      16139 ±  0%  vmstat.system.in
  50721188 ± 11%     -24.3%   38373487 ±  7%  cpuidle.C1-HSW.time
   2915214 ±  0%     -12.7%    2544540 ±  0%  cpuidle.C1-HSW.usage
      1349 ±  7%     -43.6%     761.75 ± 16%  cpuidle.C1E-HSW.usage
      1016 ± 10%     -29.3%     718.75 ± 14%  cpuidle.C3-HSW.usage
    209143 ±  0%     -22.2%     162794 ±  0%  cpuidle.C6-HSW.usage
    134.00 ± 21%    +342.4%     592.75 ± 13%  cpuidle.POLL.usage
 5.851e+08 ±  0%     -11.6%  5.172e+08 ±  0%  proc-vmstat.numa_hit
 5.851e+08 ±  0%     -11.6%  5.172e+08 ±  0%  proc-vmstat.numa_local
  84352492 ±  0%     -11.0%   75114262 ±  0%  proc-vmstat.pgalloc_dma32
 5.008e+08 ±  0%     -11.7%  4.421e+08 ±  0%  proc-vmstat.pgalloc_normal
 5.813e+08 ±  0%     -11.6%  5.136e+08 ±  0%  proc-vmstat.pgfault
 5.843e+08 ±  0%     -11.6%  5.165e+08 ±  0%  proc-vmstat.pgfree
      6070 ±  3%     -12.0%       5344 ±  4%  time.involuntary_context_switches
 2.431e+08 ±  0%     -27.8%  1.755e+08 ±  0%  time.minor_page_faults
    317.00 ±  0%     -15.8%     267.00 ±  0%  time.percent_of_cpu_this_job_got
    929.86 ±  0%     -17.9%     763.32 ±  0%  time.system_time
     38.72 ±  0%     +36.8%      52.96 ±  1%  time.user_time
    160590 ±  0%     -30.9%     110986 ±  0%  time.voluntary_context_switches
     49.45 ±  0%      -6.1%      46.46 ±  0%  turbostat.%Busy
      1628 ±  0%     -24.9%       1223 ±  0%  turbostat.Avg_MHz
      3292 ±  0%     -20.1%       2632 ±  0%  turbostat.Bzy_MHz
     30.06 ±  0%     +12.9%      33.94 ±  0%  turbostat.CPU%c6
     39.00 ±  3%     -18.6%      31.75 ±  1%  turbostat.CoreTmp
     44.25 ±  0%     -11.9%      39.00 ±  0%  turbostat.PkgTmp
     60.82 ±  0%     -21.9%      47.48 ±  0%  turbostat.PkgWatt
      9.46 ±  1%     -12.3%       8.30 ±  0%  turbostat.RAMWatt
    114.00 ±  6%     -22.8%      88.00 ± 32%  sched_debug.cfs_rq[0]:/.load_avg
    114.75 ±  6%     -22.4%      89.00 ± 31%  sched_debug.cfs_rq[0]:/.tg_load_avg_contrib
    747.75 ±  4%     -20.2%     597.00 ± 13%  sched_debug.cfs_rq[0]:/.util_avg
     35.00 ±  7%     -22.1%      27.25 ± 11%  sched_debug.cfs_rq[10]:/.load_avg
     35.00 ±  7%     -22.1%      27.25 ± 11%  sched_debug.cfs_rq[10]:/.tg_load_avg_contrib
     65687 ±  9%     -16.3%      55002 ± 10%  sched_debug.cfs_rq[13]:/.exec_clock
    796846 ±  7%     -13.6%     688111 ±  9%  sched_debug.cfs_rq[13]:/.min_vruntime
    645.50 ±  3%      -6.9%     601.00 ±  4%  sched_debug.cfs_rq[13]:/.tg_load_avg
    646.00 ±  3%      -6.5%     604.25 ±  4%  sched_debug.cfs_rq[14]:/.tg_load_avg
     53581 ± 21%     -34.5%      35083 ± 33%  sched_debug.cfs_rq[15]:/.exec_clock
    642502 ± 22%     -32.0%     436623 ± 30%  sched_debug.cfs_rq[15]:/.min_vruntime
    645.75 ±  3%      -6.4%     604.50 ±  4%  sched_debug.cfs_rq[15]:/.tg_load_avg
    675242 ± 13%     -18.5%     550135 ±  2%  sched_debug.cfs_rq[2]:/.min_vruntime
     21.50 ± 34%     -66.3%       7.25 ± 38%  sched_debug.cfs_rq[3]:/.nr_spread_over
     29.75 ± 24%     -26.9%      21.75 ±  3%  sched_debug.cfs_rq[3]:/.runnable_load_avg
    523.50 ± 15%     -21.6%     410.50 ± 19%  sched_debug.cfs_rq[4]:/.util_avg
     17.50 ± 48%     -50.0%       8.75 ± 27%  sched_debug.cfs_rq[6]:/.nr_spread_over
   -306445 ±-46%     -69.1%     -94668 ±-159%  sched_debug.cfs_rq[7]:/.spread0
    475.50 ± 11%     +14.8%     545.75 ± 12%  sched_debug.cfs_rq[7]:/.util_avg
     32.25 ±  7%     -19.4%      26.00 ± 11%  sched_debug.cpu#10.cpu_load[1]
     30.50 ±  9%     -18.0%      25.00 ± 12%  sched_debug.cpu#10.cpu_load[3]
     30.25 ± 10%     -17.4%      25.00 ± 12%  sched_debug.cpu#10.cpu_load[4]
     71304 ± 16%     -19.2%      57587 ±  9%  sched_debug.cpu#13.nr_load_updates
      8607 ± 29%     -41.9%       4998 ± 32%  sched_debug.cpu#14.ttwu_count
     30.50 ± 24%     -48.4%      15.75 ± 20%  sched_debug.cpu#15.cpu_load[0]
     43.50 ±  9%     -21.3%      34.25 ± 10%  sched_debug.cpu#2.cpu_load[2]
     42.50 ± 15%     -37.1%      26.75 ± 27%  sched_debug.cpu#3.cpu_load[0]
     43.00 ± 14%     -34.9%      28.00 ± 20%  sched_debug.cpu#3.cpu_load[1]
     42.75 ± 13%     -34.5%      28.00 ± 20%  sched_debug.cpu#3.cpu_load[2]
     42.50 ± 12%     -34.7%      27.75 ± 18%  sched_debug.cpu#3.cpu_load[3]
     42.00 ± 10%     -34.5%      27.50 ± 18%  sched_debug.cpu#3.cpu_load[4]
     37.75 ± 13%     -26.5%      27.75 ± 27%  sched_debug.cpu#4.cpu_load[4]
     28.00 ± 37%     +40.2%      39.25 ±  6%  sched_debug.cpu#7.cpu_load[0]
      1131 ± 16%     +41.7%       1602 ± 19%  sched_debug.cpu#7.curr->pid
     42073 ± 30%     +56.9%      66014 ±  6%  sched_debug.cpu#7.nr_load_updates
      4725 ± 34%     -30.5%       3284 ±  6%  sched_debug.cpu#8.sched_goidle


lituya: Grantley Haswell
Memory: 16G




                                 turbostat.Avg_MHz

  1650 ++-----------*-**-*-*-*-**-*-----------------------------------------+
       *.*.**.*.*.*                 *.*.*.**.*.*.*.**.*.*.*.**.*.*.*.*.**.*.*
  1600 ++                                                                   |
  1550 ++                                                                   |
       |                                                                    |
  1500 ++   O     O   O                                                     |
  1450 O+O O  O O   O  O O O O OO O O O O OO                                |
       |                                                                    |
  1400 ++                                                                   |
  1350 ++                                                                   |
       |                                                                    |
  1300 ++                                                                   |
  1250 ++                                                                   |
       |                                       O O O                        |
  1200 ++------------------------------------O------------------------------+


                                  turbostat._Busy

    50 ++-------------------------------------------------------------------+
       |           .*.**.*.*.*.**.*.                                        |
  49.5 *+*.* .*.*.*                 *.*.*.**.*.*.*.**.*.*.*.**.*.*.*.*.**.*.*
    49 ++   *                                                               |
       |                                                                    |
  48.5 ++                                                                   |
       |                                                                    |
    48 ++         O                                                         |
       O O OO O O   O O      O  O       O                                   |
  47.5 ++              O O O   O  O O O   OO                                |
    47 ++                                                                   |
       |                                                                    |
  46.5 ++                                    O O   O                        |
       |                                         O                          |
    46 ++-------------------------------------------------------------------+


                                turbostat.PkgWatt

  64 ++---------------------------------------------------------------------+
     |                                     .*          *                    |
  62 ++*.*. *.*.*. .*.   .**. .*.*.*.*.*.**  +   .*.*.* +   .*.*.*.*.* .*.*.*
  60 *+    *      *   *.*    *                *.*        *.*          *     |
     |                                                                      |
  58 ++                                                                     |
  56 ++                                                                     |
     O   O OO O O         OO O O O   O O O                                  |
  54 ++O          O O O O          O      O                                 |
  52 ++                                                                     |
     |                                                                      |
  50 ++                                                                     |
  48 ++                                                                     |
     |                                      O O O O                         |
  46 ++---------------------------------------------------------------------+


                            will-it-scale.per_thread_ops

  305000 ++-----------------------------------------------------------------+
  300000 ++                         .*.*.*.                                 |
         *.*.*  *.*.**.*.   *. .*.**       **.*.*.**.*.*.**.*.*.**.*.*.**.*.*
  295000 ++  :  :        *.*  *                                             |
  290000 ++  :  :                                                           |
         |   : :                                                            |
  285000 O+   ::                                                            |
  280000 ++O OO:O   O    O OO O                                             |
  275000 ++   ::  O    O        O OO O O O OO                               |
         |    :      O                                                      |
  270000 ++   *                                                             |
  265000 ++                                                                 |
         |                                                                  |
  260000 ++                                       OO                        |
  255000 ++-----------------------------------O-O---------------------------+


                          will-it-scale.time.system_time

  940 ++--------------------------------------------------------------------+
      *.*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.*.*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.*
  920 ++                                                                    |
  900 ++                                                                    |
      |                                                                     |
  880 ++                                                                    |
  860 ++                                                                    |
      O     OO                                                              |
  840 ++O O    O O   O O  O O O O OO O O O O                                |
  820 ++           O    O                                                   |
      |                                                                     |
  800 ++                                                                    |
  780 ++                                                                    |
      |                                                                     |
  760 ++-------------------------------------O-OO-O-------------------------+


                  will-it-scale.time.percent_of_cpu_this_job_got

  320 ++--*------------**-*---*-*-*----*------------------------------------+
      *.*   **.*.*.*.*      *      *.*   *.*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.*
  310 ++                                                                    |
      |                                                                     |
      |                                                                     |
  300 ++                                                                    |
      |                                                                     |
  290 O+  O OO   O   O          O      O                                    |
      | O      O   O   OO O O O   OO O   O O                                |
  280 ++                                                                    |
      |                                                                     |
      |                                                                     |
  270 ++                                     O O  O                         |
      |                                         O                           |
  260 ++--------------------------------------------------------------------+


                         will-it-scale.time.minor_page_faults

  2.5e+08 ++----------------------------------------------------------------+
          *.**. .*.**.               .*.**.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*
  2.4e+08 ++   *      *.*.**.*.*.**.*                                       |
  2.3e+08 ++                                                                |
          |                                                                 |
  2.2e+08 ++                                                                |
          O                                                                 |
  2.1e+08 ++OO O O  O     OO O O OO O O OO O O                              |
          |        O  O O                                                   |
    2e+08 ++                                                                |
  1.9e+08 ++                                                                |
          |                                                                 |
  1.8e+08 ++                                                                |
          |                                   O O O O                       |
  1.7e+08 ++----------------------------------------------------------------+


                    will-it-scale.time.voluntary_context_switches

  170000 ++-----------------------------------------------------------------+
         |                                                                  |
  160000 *+*.**.*.*.*               .*.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*
         |           *.*.*.**.*.*.**                                        |
         |                                                                  |
  150000 ++                                                                 |
         |                                                                  |
  140000 O+  OO O                                                           |
         | O        O    O OO O O OO O O O OO                               |
  130000 ++       O  O O                                                    |
         |                                                                  |
         |                                                                  |
  120000 ++                                                                 |
         |                                                                  |
  110000 ++-----------------------------------O-O-OO------------------------+


                                 time.system_time

  940 ++--------------------------------------------------------------------+
      *.*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.*.*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.*
  920 ++                                                                    |
  900 ++                                                                    |
      |                                                                     |
  880 ++                                                                    |
  860 ++                                                                    |
      O     OO                                                              |
  840 ++O O    O O   O O  O O O O OO O O O O                                |
  820 ++           O    O                                                   |
      |                                                                     |
  800 ++                                                                    |
  780 ++                                                                    |
      |                                                                     |
  760 ++-------------------------------------O-OO-O-------------------------+


                         time.percent_of_cpu_this_job_got

  320 ++--*------------**-*---*-*-*----*------------------------------------+
      *.*   **.*.*.*.*      *      *.*   *.*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.*
  310 ++                                                                    |
      |                                                                     |
      |                                                                     |
  300 ++                                                                    |
      |                                                                     |
  290 O+  O OO   O   O          O      O                                    |
      | O      O   O   OO O O O   OO O   O O                                |
  280 ++                                                                    |
      |                                                                     |
      |                                                                     |
  270 ++                                     O O  O                         |
      |                                         O                           |
  260 ++--------------------------------------------------------------------+


                                time.minor_page_faults

  2.5e+08 ++----------------------------------------------------------------+
          *.**. .*.**.               .*.**.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*
  2.4e+08 ++   *      *.*.**.*.*.**.*                                       |
  2.3e+08 ++                                                                |
          |                                                                 |
  2.2e+08 ++                                                                |
          O                                                                 |
  2.1e+08 ++OO O O  O     OO O O OO O O OO O O                              |
          |        O  O O                                                   |
    2e+08 ++                                                                |
  1.9e+08 ++                                                                |
          |                                                                 |
  1.8e+08 ++                                                                |
          |                                   O O O O                       |
  1.7e+08 ++----------------------------------------------------------------+


                           time.voluntary_context_switches

  170000 ++-----------------------------------------------------------------+
         |                                                                  |
  160000 *+*.**.*.*.*               .*.*.*.**.*.*.**.*.*.**.*.*.**.*.*.**.*.*
         |           *.*.*.**.*.*.**                                        |
         |                                                                  |
  150000 ++                                                                 |
         |                                                                  |
  140000 O+  OO O                                                           |
         | O        O    O OO O O OO O O O OO                               |
  130000 ++       O  O O                                                    |
         |                                                                  |
         |                                                                  |
  120000 ++                                                                 |
         |                                                                  |
  110000 ++-----------------------------------O-O-OO------------------------+


	[*] 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" (3236 bytes)

View attachment "reproduce" of type "text/plain" (1186 bytes)

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