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Message-ID: <20160714025510.GC16221@yexl-desktop>
Date: Thu, 14 Jul 2016 10:55:10 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Jaegeuk Kim <jaegeuk@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org
Subject: [lkp] [f2fs] 3bdad3c7ee: aim7.jobs-per-min -25.3% regression
FYI, we noticed a -25.3% regression of aim7.jobs-per-min due to commit:
commit 3bdad3c7ee72a76ec87be3477eb958ed7ca304fc ("f2fs: skip to check the block address of node page")
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
in testcase: aim7
on test machine: 48 threads Ivytown Ivy Bridge-EP with 64G memory
with following parameters: disk=1BRD_48G/fs=f2fs/load=3000/test=disk_cp
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.
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
=========================================================================================
compiler/disk/fs/kconfig/load/rootfs/tbox_group/test/testcase:
gcc-4.9/1BRD_48G/f2fs/x86_64-rhel/3000/debian-x86_64-2015-02-07.cgz/ivb44/disk_cp/aim7
commit:
2555a2d558 ("f2fs: shrink critical region in spin_lock")
3bdad3c7ee ("f2fs: skip to check the block address of node page")
2555a2d55822c9b2 3bdad3c7ee72a76ec87be3477e
---------------- --------------------------
%stddev %change %stddev
\ | \
163989 ± 1% -25.3% 122533 ± 3% aim7.jobs-per-min
110.02 ± 1% +33.9% 147.30 ± 3% aim7.time.elapsed_time
110.02 ± 1% +33.9% 147.30 ± 3% aim7.time.elapsed_time.max
140571 ± 1% +166.6% 374804 ± 5% aim7.time.involuntary_context_switches
153474 ± 1% +172.8% 418682 ± 1% aim7.time.minor_page_faults
1683 ± 2% +214.5% 5292 ± 4% aim7.time.system_time
15776849 ± 1% -95.8% 670202 ± 3% aim7.time.voluntary_context_switches
Thanks,
Xiaolong
View attachment "config-4.7.0-rc1-00170-g3bdad3c" of type "text/plain" (150952 bytes)
View attachment "job.yaml" of type "text/plain" (3089 bytes)
View attachment "reproduce" of type "text/plain" (97 bytes)
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