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Message-ID: <87a8rtx51o.fsf@yhuang-dev.intel.com>
Date: Thu, 08 Oct 2015 14:12:03 +0800
From: kernel test robot <ying.huang@...ux.intel.com>
TO: Dave Hansen <dave.hansen@...el.com>
CC: LKML <linux-kernel@...r.kernel.org>
Subject: [lkp] [x86, pkeys] 2205cb3c40: 22.4% will-it-scale.per_thread_ops
FYI, we noticed the below changes on
https://git.kernel.org/pub/scm/linux/kernel/git/daveh/x86-pkeys.git pkeys-v005-protsyscalls
commit 2205cb3c40c2ba6521427c9f8f36b2d4f2f2a98d ("x86, pkeys: arch-specific protection bits")
=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/cpufreq_governor/test:
lkp-xbm/will-it-scale/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/performance/pread1
commit:
d1d70274836b555fdc790a4957ce5ca24b427bf4
2205cb3c40c2ba6521427c9f8f36b2d4f2f2a98d
d1d70274836b555f 2205cb3c40c2ba6521427c9f8f
---------------- --------------------------
%stddev %change %stddev
\ | \
1440317 ± 0% +22.4% 1762590 ± 0% will-it-scale.per_thread_ops
313.14 ± 0% -2.1% 306.57 ± 0% will-it-scale.time.system_time
27.99 ± 0% +24.0% 34.71 ± 0% will-it-scale.time.user_time
13.25 ± 20% -50.9% 6.50 ± 41% cpuidle.POLL.usage
27.99 ± 0% +24.0% 34.71 ± 0% time.user_time
1965 ± 0% -19.1% 1590 ± 3% vmstat.system.cs
37.50 ± 4% -24.0% 28.50 ± 9% sched_debug.cfs_rq[0]:/.nr_spread_over
144.50 ± 6% -17.8% 118.75 ± 9% sched_debug.cfs_rq[1]:/.load_avg
145.50 ± 6% -18.6% 118.50 ± 9% sched_debug.cfs_rq[1]:/.tg_load_avg_contrib
lkp-xbm: Sandy Bridge
Memory: 2G
will-it-scale.per_thread_ops
1.8e+06 ++------------O-O--O--O-O-----O--O---------O-----O-O--O----------+
O O O O O O O O O O O O O
1.75e+06 ++ O |
| |
1.7e+06 ++ |
1.65e+06 ++ |
| |
1.6e+06 ++ |
| |
1.55e+06 ++ |
1.5e+06 ++ |
| *..*.. |
1.45e+06 ++ .. .* |
*..*.*..*..*..*.*..*..*.* *.*..*..*.*..*..*.*..*. |
1.4e+06 ++---------------------------------------------------------------+
will-it-scale.time.user_time
36 ++---------------------------------------------------------------------+
| O O O |
35 ++ O O O O O O O O O O O O O O O
34 ++ O O O |
O O O |
33 ++ O |
32 ++ |
| |
31 ++ |
30 ++ |
| |
29 ++ *..*.. |
28 ++ .. .* |
*..*.. .*..*..*.. .* *.*..*..*..*..*..*..*..*. |
27 ++----*-----------*--*--*----------------------------------------------+
will-it-scale.time.system_time
315 ++--------------------------------------------------------------------+
314 ++ .*.. .*.*..*.. |
*..*. *..*..*. *.. *..*.. .*..*..*..*. .*.. |
313 ++ *.. .. *. *. * |
312 ++ * |
| |
311 ++ |
310 ++ |
309 ++ |
| O |
308 O+ O O |
307 ++ O O O O O O |
| O O O O O O O O O O O O O
306 ++ O O |
305 ++--------------------------------------------------------------------+
time.user_time
36 ++---------------------------------------------------------------------+
| O O O |
35 ++ O O O O O O O O O O O O O O O
34 ++ O O O |
O O O |
33 ++ O |
32 ++ |
| |
31 ++ |
30 ++ |
| |
29 ++ *..*.. |
28 ++ .. .* |
*..*.. .*..*..*.. .* *.*..*..*..*..*..*..*..*. |
27 ++----*-----------*--*--*----------------------------------------------+
[*] 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,
Ying Huang
View attachment "job.yaml" of type "text/plain" (3182 bytes)
View attachment "reproduce" of type "text/plain" (327 bytes)
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