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

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Message-ID: <51072327.2000807@intel.com>
Date:	Tue, 29 Jan 2013 09:17:27 +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 02:42 PM, Mike Galbraith wrote:
> Back to original 1ms sleep, 8ms work, turning NUMA box into a single
> node 10 core box with numactl.
> 
> monteverdi:/abuild/mike/:[0]# echo powersaving > /sys/devices/system/cpu/sched_policy/current_sched_policy
> monteverdi:/abuild/mike/:[0]# numactl --cpunodebind=0 massive_intr 10 60
> 045286  00043872
> 045289  00043464
> 045284  00043488
> 045287  00043440
> 045283  00043416
> 045281  00044456
> 045285  00043456
> 045288  00044312
> 045280  00043048
> 045282  00043240

Um, no idea why the powersaving data is so low.
> monteverdi:/abuild/mike/:[0]# echo balance > /sys/devices/system/cpu/sched_policy/current_sched_policy
> monteverdi:/abuild/mike/:[0]# numactl --cpunodebind=0 massive_intr 10 60
> 045300  00052536
> 045307  00052472
> 045304  00052536
> 045299  00052536
> 045305  00052520
> 045306  00052528
> 045302  00052528
> 045303  00052528
> 045308  00052512
> 045301  00052520
> monteverdi:/abuild/mike/:[0]# echo performance > /sys/devices/system/cpu/sched_policy/current_sched_policy
> monteverdi:/abuild/mike/:[0]# numactl --cpunodebind=0 massive_intr 10 60
> 045339  00052600
> 045340  00052608
> 045338  00052600
> 045337  00052608
> 045343  00052600
> 045341  00052600
> 045336  00052608
> 045335  00052616
> 045334  00052576


-- 
Thanks Alex
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