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Date: Mon, 21 Mar 2016 14:34:49 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc: Viresh Kumar <viresh.kumar@...aro.org>,
"Gautham R. Shenoy" <ego@...ux.vnet.ibm.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [cpufreq] 9be4fd2c77: No primary result change, 56.4%
fsmark.time.involuntary_context_switches
FYI, we noticed that fsmark.time.involuntary_context_switches +56.4% change with your commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4 ("cpufreq: governor: Replace timers with utilization update callbacks")
=========================================================================================
compiler/disk/filesize/fs2/fs/iterations/kconfig/nr_directories/nr_files_per_directory/nr_threads/rootfs/sync_method/tbox_group/test_size/testcase:
gcc-4.9/1HDD/8K/nfsv4/ext4/1x/x86_64-rhel/16d/256fpd/32t/debian-x86_64-2015-02-07.cgz/fsyncBeforeClose/lkp-ws02/400M/fsmark
commit:
a4675fbc4a7abe072ac6ba38c252f22a91ebcd94
9be4fd2c7723a3057b0b39676fe4c8d5fd7118a4
a4675fbc4a7abe07 9be4fd2c7723a3057b0b39676f
---------------- --------------------------
%stddev %change %stddev
\ | \
70792 ± 0% +56.4% 110713 ± 1% fsmark.time.involuntary_context_switches
108756 ± 2% -10.4% 97492 ± 6% meminfo.DirectMap4k
70792 ± 0% +56.4% 110713 ± 1% time.involuntary_context_switches
21.50 ± 57% +48.8% 32.00 ± 2% turbostat.Avg_MHz
92879 ± 1% -12.2% 81528 ± 2% softirqs.RCU
107180 ± 1% -19.4% 86414 ± 0% softirqs.SCHED
7477 ± 0% +7.5% 8036 ± 0% vmstat.system.cs
710.75 ± 0% +92.2% 1366 ± 2% vmstat.system.in
1.165e+09 ± 0% -12.3% 1.022e+09 ± 3% cpuidle.C3-NHM.time
266839 ± 1% -20.5% 212259 ± 2% cpuidle.C3-NHM.usage
58012774 ± 4% +26.7% 73508891 ± 2% cpuidle.POLL.time
lkp-ws02: Westmere-EP
Memory: 16G
fsmark.time.involuntary_context_switches
115000 ++-----------------------------------------------------------------+
| OOOO O OOO |
110000 ++ O OO O O |
105000 +O O O O O O O OO OOO O O O OO |
O OO O O OO O O O O O O O O |
100000 ++ |
95000 ++ |
| |
90000 ++ |
85000 ++ |
| |
80000 ++ |
75000 ++ |
| *.***.* **. .***.****.***. |
70000 **-***-------*---***-****-***--------------****-***-****-***-****-**
time.involuntary_context_switches
115000 ++-----------------------------------------------------------------+
| OOOO O OOO |
110000 ++ O OO O O |
105000 +O O O O O O O OO OOO O O O OO |
O OO O O OO O O O O O O O O |
100000 ++ |
95000 ++ |
| |
90000 ++ |
85000 ++ |
| |
80000 ++ |
75000 ++ |
| *.***.* **. .***.****.***. |
70000 **-***-------*---***-****-***--------------****-***-****-***-****-**
vmstat.system.in
1500 ++-------------------------------------------------------------------+
| |
1400 ++ OOO OO OOO O |
1300 +O OO O O OO O OO OOO OOO OOOO O O OO |
O O OOO O O OO O |
1200 ++ OO |
| |
1100 ++ |
| |
1000 ++ |
900 ++ |
| |
800 ++.* .** .* .** * .* *. ** .* *. *. * |
** ** * ** *.* *.*** **.** * * * ** ***.* *.***.***.* |
700 ++---------------------------------------------------------------**-**
[*] bisect-good sample
[O] bisect-bad sample
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
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 Ye.
View attachment "job.yaml" of type "text/plain" (3882 bytes)
View attachment "reproduce" of type "text/plain" (898 bytes)
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