lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date:   Wed, 30 Aug 2017 13:49:54 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Tim Chen <tim.c.chen@...ux.intel.com>,
        Kan Liang <kan.liang@...el.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Christopher Lameter <cl@...ux.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: [lkp-robot] 3510ca20ec:  will-it-scale.per_process_ops 57.3%
 improvement


Greeting,

FYI, we noticed a 57.3% improvement of will-it-scale.per_process_ops due to commit:


commit: 3510ca20ece0150af6b10c77a74ff1b5c198e3e2 ("Minor page waitqueue cleanups")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: will-it-scale
on test machine: 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory
with following parameters:

	nr_task: 100%
	mode: process
	test: pread2
	cpufreq_governor: performance

test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two.
test-url: https://github.com/antonblanchard/will-it-scale



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: will-it-scale/100%-process-pread2-performance/lkp-hsw-ep4

0cc3b0ec23ce4c69  3510ca20ece0150af6b10c77a7  
----------------  --------------------------  
         %stddev      change         %stddev
             \          |                \  
      6671              57%      10495        will-it-scale.per_process_ops
    468302              40%     657813        vmstat.system.cs
     14.64              53%      22.42        perf-stat.cache-miss-rate%
  1.42e+08              41%  1.996e+08        perf-stat.context-switches
 1.826e+09              39%  2.546e+09        perf-stat.iTLB-loads
 8.607e+08              39%  1.198e+09        perf-stat.node-store-misses
 2.482e+11              35%  3.361e+11        perf-stat.dTLB-stores
      0.34              33%       0.45 ±  3%  perf-stat.branch-miss-rate%
 3.512e+09              28%   4.49e+09        perf-stat.branch-misses
 3.972e+09              26%  4.992e+09        perf-stat.cache-misses
 2.475e+09              24%  3.067e+09        perf-stat.node-load-misses
 6.177e+08              14%  7.073e+08        perf-stat.node-stores
     14841 ± 10%        13%      16765 ±  3%  perf-stat.instructions-per-iTLB-miss
     58.21               8%      62.87        perf-stat.node-store-miss-rate%
     36936               6%      39270        perf-stat.cpu-migrations
      0.29               6%       0.31        perf-stat.ipc
 1.032e+12              -4%  9.917e+11        perf-stat.branch-instructions
      3.40              -6%       3.20        perf-stat.cpi
 1.472e+13              -7%  1.363e+13 ±  3%  perf-stat.cpu-cycles
 2.965e+08 ± 13%       -14%  2.543e+08        perf-stat.iTLB-load-misses
 2.714e+10             -18%  2.226e+10        perf-stat.cache-references
 2.191e+08 ±  4%       -24%  1.667e+08        perf-stat.dTLB-store-misses
     13.95 ± 12%       -35%       9.08        perf-stat.iTLB-load-miss-rate%
      0.09 ±  4%       -44%       0.05        perf-stat.dTLB-store-miss-rate%
      0.11 ± 36%       -54%       0.05 ±  5%  perf-stat.dTLB-load-miss-rate%
 1.247e+09 ± 37%       -55%  5.627e+08 ±  4%  perf-stat.dTLB-load-misses




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-4.13.0-rc6-00197-g3510ca2" of type "text/plain" (161040 bytes)

View attachment "job-script" of type "text/plain" (6826 bytes)

View attachment "job.yaml" of type "text/plain" (4580 bytes)

View attachment "reproduce" of type "text/plain" (289 bytes)

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ