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

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Message-ID: <1359388055.5783.164.camel@marge.simpson.net>
Date:	Mon, 28 Jan 2013 16:47:35 +0100
From:	Mike Galbraith <efault@....de>
To:	Alex Shi <alex.shi@...el.com>
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 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
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

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