linux-kernel - Re: [patch v4 0/18] sched: simplified fork, release load avg and power awareness scheduling

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Message-ID: <510729B1.8070807@intel.com>
Date:	Tue, 29 Jan 2013 09:45:21 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Mike Galbraith <efault@....de>
CC:	Borislav Petkov <bp@...en8.de>, torvalds@...ux-foundation.org,
	mingo@...hat.com, peterz@...radead.org, tglx@...utronix.de,
	akpm@...ux-foundation.org, arjan@...ux.intel.com, pjt@...gle.com,
	namhyung@...nel.org, vincent.guittot@...aro.org,
	gregkh@...uxfoundation.org, preeti@...ux.vnet.ibm.com,
	viresh.kumar@...aro.org, linux-kernel@...r.kernel.org
Subject: Re: [patch v4 0/18] sched: simplified fork, release load avg and
 power awareness scheduling

On 01/28/2013 11:47 PM, Mike Galbraith wrote:
> On Mon, 2013-01-28 at 06:17 +0100, Mike Galbraith wrote:
> 
> Ok damnit.
> 
>> monteverdi:/abuild/mike/:[0]# echo powersaving > /sys/devices/system/cpu/sched_policy/current_sched_policy
>> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
>> 043321  00058616
>> 043313  00058616
>> 043318  00058968
>> 043317  00058968
>> 043316  00059184
>> 043319  00059192
>> 043320  00059048
>> 043314  00059048
>> 043312  00058176
>> 043315  00058184
> 
> That was boost if you like, and free to roam 4 nodes.
> 
> monteverdi:/abuild/mike/:[0]# echo powersaving > /sys/devices/system/cpu/sched_policy/current_sched_policy
> monteverdi:/abuild/mike/:[0]# echo 0 > /sys/devices/system/cpu/cpufreq/boost
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 014618  00039616
> 014623  00039256
> 014617  00039256
> 014620  00039304
> 014621  00039304  (wait a minute, you said..)
> 014616  00039080
> 014625  00039064
> 014622  00039672
> 014624  00039624
> 014619  00039672
> monteverdi:/abuild/mike/:[0]# echo 1 > /sys/devices/system/cpu/cpufreq/boost
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 014635  00058160
> 014633  00058592
> 014638  00058592
> 014636  00058160
> 014632  00058200
> 014634  00058704
> 014639  00058704
> 014641  00058200
> 014640  00058560
> 014637  00058560
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 014673  00059504
> 014676  00059504
> 014674  00059064
> 014672  00059064
> 014675  00058560
> 014671  00058560
> 014677  00059248
> 014668  00058864
> 014669  00059248
> 014670  00058864
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 014686  00043472
> 014689  00043472
> 014685  00043760
> 014690  00043760
> 014687  00043528
> 014688  00043528  (hmm)
> 014683  00043216
> 014692  00043208
> 014684  00043336
> 014691  00043336

I am sorry Mike. does above 3 times testing has a same sched policy? and
same question for the following testing.

> monteverdi:/abuild/mike/:[0]# echo 0 > /sys/devices/system/cpu/cpufreq/boost
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 014701  00039344
> 014707  00039344
> 014709  00038976
> 014700  00038976
> 014708  00039256  (hmm)
> 014703  00039256
> 014705  00039400
> 014704  00039400
> 014706  00039320
> 014702  00039320
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 014713  00058552
> 014716  00058664
> 014719  00058600
> 014715  00058600
> 014718  00058520
> 014722  00058400
> 014721  00058768
> 014717  00058768
> 014714  00058552
> 014720  00058560
> monteverdi:/abuild/mike/:[0]# massive_intr 10 60
> 014732  00058736
> 014734  00058760
> 014729  00040872
> 014736  00059184
> 014728  00059184
> 014727  00058744
> 014733  00058760
> 014731  00059320
> 014730  00059280
> 014735  00041072
> monteverdi:/abuild/mike/:[0]# numactl --cpunodebind=0 massive_intr 10 60
> 014749  00040608
> 014748  00040616
> 014745  00039360
> 014750  00039360
> 014751  00039416
> 014747  00039416
> 014752  00039336
> 014746  00039336
> 014744  00039480
> 014753  00039480
> monteverdi:/abuild/mike/:[0]# numactl --cpunodebind=0 massive_intr 10 60
> 014757  00039272
> 014761  00039272
> 014765  00039528
> 014756  00039528
> 014759  00039352
> 014760  00039352
> 014764  00039248
> 014762  00039248
> 014758  00039352
> 014763  00039352
> monteverdi:/abuild/mike/:[0]# numactl --cpunodebind=0 massive_intr 10 60
> 014773  00059680
> 014769  00059680
> 014768  00059144
> 014777  00059144
> 014775  00059688
> 014774  00059688
> 014770  00059264
> 014771  00059264
> 014772  00059528
> 014776  00059528
> 
> Ok box, whatever blows your skirt up.  I'm done.
> 
> Non
> Uniform
> Mysterious
> Artifacts
> 


-- 
Thanks Alex
--
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