linux-kernel - [LKP] [fs] 04b2fa9f8f3: +2.2% unixbench.score

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Date:	Wed, 06 May 2015 10:36:10 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Christoph Hellwig <hch@....de>
Cc:	Al Viro <viro@...iv.linux.org.uk>,
	LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: [LKP] [fs] 04b2fa9f8f3: +2.2% unixbench.score

FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 04b2fa9f8f36ec6fb6fd1c9dc9df6fff0cd27323 ("fs: split generic and aio kiocb")


testbox/testcase/testparams: ivb42/unixbench/performance-pipe

599bd19bdc4c6b20  04b2fa9f8f36ec6fb6fd1c9dc9  
----------------  --------------------------  
         %stddev     %change         %stddev
             \          |                \  
      1733 ±  0%      +2.2%       1770 ±  0%  unixbench.score
     21746 ±  5%      -9.4%      19710 ±  5%  numa-meminfo.node0.SReclaimable
     20531 ±  6%      +9.5%      22492 ±  5%  numa-meminfo.node1.SReclaimable
      5436 ±  5%      -9.4%       4927 ±  5%  numa-vmstat.node0.nr_slab_reclaimable
      5132 ±  6%      +9.6%       5622 ±  5%  numa-vmstat.node1.nr_slab_reclaimable
     22344 ± 41%     -49.2%      11343 ± 21%  sched_debug.cfs_rq[0]:/.min_vruntime
      8908 ± 10%     -23.9%       6780 ± 20%  sched_debug.cfs_rq[19]:/.min_vruntime
         2 ± 30%     -63.6%          1 ±  0%  sched_debug.cfs_rq[25]:/.nr_spread_over
       245 ±  8%     +37.6%        337 ± 18%  sched_debug.cfs_rq[26]:/.avg->runnable_avg_sum
      4354 ± 19%     -23.6%       3327 ±  4%  sched_debug.cfs_rq[3]:/.exec_clock
     11391 ± 13%     -36.9%       7185 ± 20%  sched_debug.cfs_rq[4]:/.min_vruntime
       558 ± 17%     -30.7%        387 ± 23%  sched_debug.cfs_rq[4]:/.exec_clock
      2679 ±  6%     +43.9%       3856 ± 13%  sched_debug.cpu#13.sched_count
      1038 ±  4%     +54.8%       1607 ± 19%  sched_debug.cpu#13.ttwu_count
       720 ± 21%     +22.2%        880 ±  9%  sched_debug.cpu#33.nr_switches
       726 ± 21%     +22.3%        888 ±  9%  sched_debug.cpu#33.sched_count
      4524 ±  1%     +79.6%       8127 ± 45%  sched_debug.cpu#33.nr_load_updates
       326 ± 21%     +21.3%        396 ± 11%  sched_debug.cpu#33.sched_goidle
       598 ± 10%     +27.8%        764 ± 15%  sched_debug.cpu#35.nr_switches
       606 ± 10%     +27.0%        770 ± 15%  sched_debug.cpu#35.sched_count
      7807 ± 41%     -42.6%       4477 ±  2%  sched_debug.cpu#35.nr_load_updates
       269 ± 11%     +27.5%        344 ± 13%  sched_debug.cpu#35.sched_goidle
      4923 ± 36%     -43.3%       2790 ± 11%  sched_debug.cpu#4.sched_count
       501 ± 17%     -25.3%        374 ± 28%  sched_debug.cpu#44.sched_goidle
       396 ±  6%     +17.7%        466 ±  8%  sched_debug.cpu#46.sched_goidle
       833 ± 10%     +39.4%       1162 ±  4%  sched_debug.cpu#8.sched_goidle
       249 ± 39%    +113.6%        533 ± 10%  sched_debug.cpu#8.ttwu_local
      1738 ± 10%     +40.7%       2446 ±  5%  sched_debug.cpu#8.nr_switches
       670 ± 11%     +36.0%        911 ±  8%  sched_debug.cpu#8.ttwu_count
      0.00 ± 20%     +55.2%       0.00 ± 39%  sched_debug.rt_rq[44]:/.rt_time

ivb42: Ivytown Ivy Bridge-EP
Memory: 64G




                                  unixbench.score

  1790 ++-------------------------------------------------------------------+
       | O                 O                O   O O O                       |
  1780 O+  O O O         O   O O          O   O           O                 |
  1770 ++        O O O O                              O O   O O O O O   O O O
       |                         O O   O                              O     |
  1760 ++                            O                                      |
  1750 ++                                                                   |
       |                                                                    |
  1740 ++                                                                   |
  1730 ++        *.*                                      *.*.*.*           |
       *.       +   :                                    :                  |
  1720 ++*.*.*.*    :   .*.*.*.*                         :                  |
  1710 ++            :.*        + .*.    .*.*.*.*.*.*.*.*                   |
       |             *           *   *.*.                                   |
  1700 ++-------------------------------------------------------------------+


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

To reproduce:

	apt-get install ruby
	git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
	cd lkp-tests
	bin/setup-local job.yaml # the job file attached in this email
	bin/run-local   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" (2855 bytes)

View attachment "reproduce" of type "text/plain" (3553 bytes)

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