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Date: Tue, 17 Nov 2020 10:48:25 +0800
From: kernel test robot <oliver.sang@...el.com>
To: John Hubbard <jhubbard@...dia.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Jan Kara <jack@...e.cz>,
Andrew Morton <akpm@...ux-foundation.org>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Ira Weiny <ira.weiny@...el.com>,
Jérôme Glisse <jglisse@...hat.com>,
"Matthew Wilcox (Oracle)" <willy@...radead.org>,
Al Viro <viro@...iv.linux.org.uk>,
Christoph Hellwig <hch@...radead.org>,
Dan Williams <dan.j.williams@...el.com>,
Dave Chinner <david@...morbit.com>,
Jason Gunthorpe <jgg@...pe.ca>,
Jonathan Corbet <corbet@....net>,
Michal Hocko <mhocko@...e.com>,
Mike Kravetz <mike.kravetz@...cle.com>,
Shuah Khan <shuah@...nel.org>,
Vlastimil Babka <vbabka@...e.cz>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
lkp@...el.com, ying.huang@...el.com, feng.tang@...el.com,
zhengjun.xing@...el.com, guobing.chen@...el.com,
ming.a.chen@...el.com, frank.du@...el.com, Shuhua.Fan@...el.com,
wangyang.guo@...el.com, Wenhuan.Huang@...el.com,
jessica.ji@...el.com, shan.kang@...el.com, guangli.li@...el.com,
tiejun.li@...el.com, yu.ma@...el.com, dapeng1.mi@...el.com,
jiebin.sun@...el.com, gengxin.xie@...el.com, fan.zhao@...el.com
Subject: [mm/gup] 47e29d32af: phoronix-test-suite.npb.FT.A.total_mop_s
-45.0% regression
Greeting,
FYI, we noticed a -45.0% regression of phoronix-test-suite.npb.FT.A.total_mop_s due to commit:
commit: 47e29d32afba11b13efb51f03154a8cf22fb4360 ("mm/gup: page->hpage_pinned_refcount: exact pin counts for huge pages")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: phoronix-test-suite
on test machine: 96 threads Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz with 192G memory
with following parameters:
test: npb-1.3.1
option_a: FT.A
cpufreq_governor: performance
ucode: 0x5002f01
test-description: The Phoronix Test Suite is the most comprehensive testing and benchmarking platform available that provides an extensible framework for which new tests can be easily added.
test-url: http://www.phoronix-test-suite.com/
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
=========================================================================================
compiler/cpufreq_governor/kconfig/option_a/rootfs/tbox_group/test/testcase/ucode:
gcc-9/performance/x86_64-rhel-8.3/FT.A/debian-x86_64-phoronix/lkp-csl-2sp8/npb-1.3.1/phoronix-test-suite/0x5002f01
commit:
3faa52c03f ("mm/gup: track FOLL_PIN pages")
47e29d32af ("mm/gup: page->hpage_pinned_refcount: exact pin counts for huge pages")
3faa52c03f440d1b 47e29d32afba11b13efb51f0315
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
1:4 -25% :4 kmsg.Spurious_LAPIC_timer_interrupt_on_cpu
%stddev %change %stddev
\ | \
4585 ± 2% -45.0% 2522 phoronix-test-suite.npb.FT.A.total_mop_s
1223 ± 4% +40.2% 1714 phoronix-test-suite.time.percent_of_cpu_this_job_got
phoronix-test-suite.npb.FT.A.total_mop_s
6500 +--------------------------------------------------------------------+
| .+. .+. .+. |
6000 |.+ +.+.+.++.+.+.+.+.+.+.+ +.+.++ +.+.+.+.+.+.+.+.+.++.+ |
5500 |-+ : |
| : |
5000 |-+ : |
4500 |-+ +.+.+.|
| |
4000 |-+ |
3500 |-+ |
| |
3000 |-+ |
2500 |-+ O O O |
| O O O O O OO O O O O O O O O O O |
2000 +--------------------------------------------------------------------+
[*] 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,
Oliver Sang
View attachment "config-5.6.0-05655-g47e29d32afba11" of type "text/plain" (156435 bytes)
View attachment "job-script" of type "text/plain" (7340 bytes)
View attachment "job.yaml" of type "text/plain" (4951 bytes)
View attachment "reproduce" of type "text/plain" (295 bytes)
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