Hi Aaron,
FYI, we noticed the below changes on
commit ed235875e2ca983197831337a986f0517074e1a0 ("kernel/watchdog.c: print traces for all cpus on lockup detection")
test case: lkp-snb01/will-it-scale/signal1
f3aca3d09525f87 ed235875e2ca983197831337a
--------------- -------------------------
0.12 ~ 0% -14.2% 0.10 ~ 0% TOTAL will-it-scale.scalability
506146 ~ 0% -4.4% 484004 ~ 0% TOTAL will-it-scale.per_process_ops
12193 ~ 4% +12.6% 13726 ~ 6% TOTAL slabinfo.kmalloc-256.active_objs
12921 ~ 4% +12.3% 14516 ~ 5% TOTAL slabinfo.kmalloc-256.num_objs
123094 ~ 3% -6.5% 115117 ~ 3% TOTAL meminfo.Committed_AS
Legend:
~XX% - stddev percent
[+-]XX% - change percent
will-it-scale.per_process_ops
515000 ++-----------------------------------------------------------------+
| .*.*.*.*. .* |
510000 *+* *.*.* + .*. *. |
505000 ++ * *.*.*.*. .* .*.*.*. .*.*.*. + *.*.*.*.*.*
| * * * *.* |
500000 ++ |
| |
495000 ++ |
| |
490000 ++ |
485000 ++ O O O O O O |
| O O O O O O O O O O |
480000 O+O O O O O |
| |
475000 ++-----------------------------------------------------------------+
[*] 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,
Jet
Hi all,
Sorry please ignore this report: it seems there are no obvious
relationship between the code change and the regression.
Thanks,
Fengguang
On Fri, Jul 04, 2014 at 11:45:31AM +0800, Jet Chen wrote:
> Hi Aaron,
>
> FYI, we noticed the below changes on
>
> commit ed235875e2ca983197831337a986f0517074e1a0 ("kernel/watchdog.c: print traces for all cpus on lockup detection")
>
> test case: lkp-snb01/will-it-scale/signal1
>
> f3aca3d09525f87 ed235875e2ca983197831337a
> --------------- -------------------------
> 0.12 ~ 0% -14.2% 0.10 ~ 0% TOTAL will-it-scale.scalability
> 506146 ~ 0% -4.4% 484004 ~ 0% TOTAL will-it-scale.per_process_ops
> 12193 ~ 4% +12.6% 13726 ~ 6% TOTAL slabinfo.kmalloc-256.active_objs
> 12921 ~ 4% +12.3% 14516 ~ 5% TOTAL slabinfo.kmalloc-256.num_objs
> 123094 ~ 3% -6.5% 115117 ~ 3% TOTAL meminfo.Committed_AS
>
> Legend:
> ~XX% - stddev percent
> [+-]XX% - change percent
>
>
> will-it-scale.per_process_ops
>
> 515000 ++-----------------------------------------------------------------+
> | .*.*.*.*. .* |
> 510000 *+* *.*.* + .*. *. |
> 505000 ++ * *.*.*.*. .* .*.*.*. .*.*.*. + *.*.*.*.*.*
> | * * * *.* |
> 500000 ++ |
> | |
> 495000 ++ |
> | |
> 490000 ++ |
> 485000 ++ O O O O O O |
> | O O O O O O O O O O |
> 480000 O+O O O O O |
> | |
> 475000 ++-----------------------------------------------------------------+
>
>
> [*] 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,
> Jet
>
> echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu10/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu11/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu12/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu13/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu14/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu15/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu16/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu17/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu18/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu19/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu20/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu21/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu22/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu23/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu24/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu25/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu26/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu27/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu28/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu29/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu30/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu31/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu5/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu6/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu7/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu8/cpufreq/scaling_governor
> echo performance > /sys/devices/system/cpu/cpu9/cpufreq/scaling_governor
> ./runtest.py signal1 25 1 8 16 24 32
>