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Date: Fri, 18 Aug 2017 09:24:25 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Ming Lei <ming.lei@...hat.com>
Cc: Jens Axboe <axboe@...com>, Christoph Hellwig <hch@...radead.org>,
Huang Ying <ying.huang@...el.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Alexander Viro <viro@...iv.linux.org.uk>,
linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
Ming Lei <ming.lei@...hat.com>, lkp@...org
Subject: [lkp-robot] [block] 434f2ea20d: fileio.requests_per_sec -3.1%
regression
Greeting,
FYI, we noticed a -3.1% regression of fileio.requests_per_sec due to commit:
commit: 434f2ea20d5b4da12d9de87cb2838f320173f6a1 ("block: enable multipage bvecs")
url: https://github.com/0day-ci/linux/commits/Ming-Lei/block-support-multipage-bvec/20170810-110521
in testcase: fileio
on test machine: 4 threads Intel(R) Core(TM) i5-2300 CPU @ 2.80GHz with 4G memory
with following parameters:
period: 600s
nr_threads: 100%
disk: 1HDD
fs: f2fs
size: 64G
filenum: 1024f
rwmode: seqwr
iomode: sync
cpufreq_governor: performance
test-description: fileio is a subtest of SysBench benchmark suite to measure file IO performance.
test-url: https://github.com/akopytov/sysbench
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: fileio/600s-100%-1HDD-f2fs-64G-1024f-seqwr-sync-performance/lkp-sb02
3d5b6047555ee331 434f2ea20d5b4da12d9de87cb2
---------------- --------------------------
%stddev change %stddev
\ | \
7890 -3% 7642 fileio.requests_per_sec
531 3% 548 fileio.time.elapsed_time
531 3% 548 fileio.time.elapsed_time.max
28163 4% 29269 interrupts.CAL:Function_call_interrupts
564236 3% 581392 perf-stat.page-faults
564236 3% 581391 perf-stat.minor-faults
126044 -3% 122052 vmstat.io.bo
29771 -3% 28842 vmstat.system.cs
418 8% 450 iostat.sda.await
418 8% 450 iostat.sda.w_await
125990 -3% 122056 iostat.sda.wkB/s
5.28 ± 5% -43% 3.03 iostat.sda.wrqm/s
fileio.requests_per_sec
8000 *+*-*-*--*-*-*-*-*-*--*-*-*-*-*-*--*-*-*-*-*-*-*--*-*-*-*---*--*-*-*-*
O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O |
7000 ++ : : |
6000 ++ : : |
| : : |
5000 ++ : : |
| : : |
4000 ++ : : |
| : : |
3000 ++ : : |
2000 ++ : : |
| : |
1000 ++ : |
| : |
0 ++--------------------------------------------------------*----------+
perf-stat.page-faults
600000 O+O-O-O-O----O-O-O-O-O-----O-O-O--O-------O-O-----O-O------O-O-O---+
*.*.*.*.*.O..*.*.*.*.*.O.O.*.*.*..*.O.O.O.*.*.O.O.*.*.O O *.*.*.*.*
500000 ++ : : |
| : : |
| : : |
400000 ++ : : |
| : : |
300000 ++ : : |
| : : |
200000 ++ : : |
| : : |
| :: |
100000 ++ : |
| : |
0 ++-------------------------------------------------------*---------+
perf-stat.minor-faults
600000 O+O-O-O-O----O-O-O-O-O-----O-O-O--O-------O-O-----O-O------O-O-O---+
*.*.*.*.*.O..*.*.*.*.*.O.O.*.*.*..*.O.O.O.*.*.O.O.*.*.O O *.*.*.*.*
500000 ++ : : |
| : : |
| : : |
400000 ++ : : |
| : : |
300000 ++ : : |
| : : |
200000 ++ : : |
| : : |
| :: |
100000 ++ : |
| : |
0 ++-------------------------------------------------------*---------+
fileio.time.elapsed_time
600 ++--------------------------------------------------------------------+
O O O O O O O O O O O O O O O O O O O O O O O O O O.O O O O O |
500 *+*.*..*.*.*.*.*..*.*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.* : *.*..*.*.*
| : : |
| : : |
400 ++ : : |
| : : |
300 ++ : : |
| : : |
200 ++ : : |
| : : |
| :: |
100 ++ : |
| : |
0 ++---------------------------------------------------------*----------+
fileio.time.elapsed_time.max
600 ++--------------------------------------------------------------------+
O O O O O O O O O O O O O O O O O O O O O O O O O O.O O O O O |
500 *+*.*..*.*.*.*.*..*.*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.* : *.*..*.*.*
| : : |
| : : |
400 ++ : : |
| : : |
300 ++ : : |
| : : |
200 ++ : : |
| : : |
| :: |
100 ++ : |
| : |
0 ++---------------------------------------------------------*----------+
iostat.sda.wrqm_s
7 ++----------------------------------------------------------------------+
| |
6 ++ *.. .* *. |
*.*..*.*. + *. .*.*..*.*.*. .*.*.*.*.. .*.*.*. + .*.*..* : *.. .*.|
5 ++ * * *. * * : : * *
| : : |
4 ++ : : |
| : : |
3 O+O O O O O O O O O O O O O O O O O O O O O O O O O O:O:O O O |
| : : |
2 ++ : : |
| : : |
1 ++ : |
| : |
0 ++-----------------------------------------------------------*----------+
iostat.sda.wkB_s
140000 ++-----------------------------------------------------------------+
*.*.*.*.*.*..*.*.*.*.*.*.*.*.*.*..*.*.*.*.*.*.*.*.*.*. *.*.*.*.*
120000 O+O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O |
| : : |
100000 ++ : : |
| : : |
80000 ++ : : |
| : : |
60000 ++ : : |
| : : |
40000 ++ : : |
| :: |
20000 ++ : |
| : |
0 ++-------------------------------------------------------*---------+
vmstat.io.bo
140000 ++-----------------------------------------------------------------+
*.*.*.*.*.*..*.*.*.*.*.*.*.*.*.*..*.*.*.*.*.*.*.*.*.*. *.*.*.*.*
120000 O+O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O |
| : : |
100000 ++ : : |
| : : |
80000 ++ : : |
| : : |
60000 ++ : : |
| : : |
40000 ++ : : |
| :: |
20000 ++ : |
| : |
0 ++-------------------------------------------------------*---------+
[*] 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-4.13.0-rc4-00187-g434f2ea" of type "text/plain" (160946 bytes)
View attachment "job-script" of type "text/plain" (7364 bytes)
View attachment "job.yaml" of type "text/plain" (4946 bytes)
View attachment "reproduce" of type "text/plain" (551 bytes)
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