linux-kernel - [lkp-robot] [xfs] e2f2342639: aim7.jobs-per-min 8.2% improvement

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Message-ID: <20170810013920.GH24602@yexl-desktop>
Date:   Thu, 10 Aug 2017 09:39:20 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Brian Foster <bfoster@...hat.com>
Cc:     "Darrick J. Wong" <darrick.wong@...cle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: [lkp-robot] [xfs]  e2f2342639:  aim7.jobs-per-min 8.2% improvement


Greeting,

FYI, we noticed a 8.2% improvement of aim7.jobs-per-min due to commit:


commit: e2f2342639a414b60de3876a8b437eac2b795dbe ("xfs: refactor xlog_cil_insert_items() to facilitate transaction dump")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: aim7
on test machine: 40 threads Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz with 384G memory
with following parameters:

	disk: 1BRD_48G
	fs: xfs
	test: disk_cp
	load: 3000
	cpufreq_governor: performance

test-description: AIM7 is a traditional UNIX system level benchmark suite which is used to test and measure the performance of multiuser system.
test-url: https://sourceforge.net/projects/aimbench/files/aim-suite7/



Details are as below:
-------------------------------------------------------------------------------------------------->


To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml

testcase/path_params/tbox_group/run: aim7/1BRD_48G-xfs-disk_cp-3000-performance/lkp-ivb-ep01

7d2d5653460443e0  e2f2342639a414b60de3876a8b  
----------------  --------------------------  
         %stddev      change         %stddev
             \          |                \  
     80127               8%      86664        aim7.jobs-per-min
       225              -8%        208        aim7.time.elapsed_time
       225              -8%        208        aim7.time.elapsed_time.max
      8212              -8%       7536        aim7.time.system_time
    430021 ±  4%       -12%     379972 ±  4%  aim7.time.involuntary_context_switches
      0.26                        0.27        perf-stat.ipc
      3.80                        3.72        perf-stat.cpi
 1.803e+12              -6%  1.695e+12        perf-stat.dTLB-loads
 6.486e+12              -6%  6.081e+12        perf-stat.instructions
 1.423e+12              -7%  1.322e+12        perf-stat.branch-instructions
 2.463e+13              -8%  2.262e+13        perf-stat.cpu-cycles
     66.00 ± 27%       -44%      37.19 ± 20%  perf-stat.iTLB-load-miss-rate%



                                  aim7.jobs-per-min

  89000 ++O----O-------------------------------------------O----------------+
  88000 O+   O    O      O                                                  |
        |              O   O                   O    O O                     |
  87000 ++          O                     O O                               |
  86000 ++                    O O  O O           O           O              |
  85000 ++                              O                O                  |
  84000 ++               *                     *                            |
        |               : +                   + :                           |
  83000 ++          *.. :  *    *.. .*..     +  :  .*.*      *              |
  82000 ++          :  *    :   :  *    *. .*    *.    +    + +        *..  |
  81000 ++         :         : :          *             + .*   + .*    :    |
  80000 ++*..*.*.. :         : :                         *      *  +  :   *.|
        *         :           *                                     + :     *
  79000 ++        *                                                  *      |
  78000 ++------------------------------------------------------------------+

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


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

View attachment "config-4.12.0-rc6-00007-ge2f2342" of type "text/plain" (159256 bytes)

View attachment "job-script" of type "text/plain" (7420 bytes)

View attachment "job.yaml" of type "text/plain" (5052 bytes)

View attachment "reproduce" of type "text/plain" (695 bytes)