linux-kernel - Re: [RFC PATCH v2 0/2] Saving power by cpu evacuationsched_max_capacity

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Message-Id: <1242222475.26820.22.camel@twins>
Date:	Wed, 13 May 2009 15:47:55 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	balbir@...ux.vnet.ibm.com
Cc:	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Suresh B Siddha <suresh.b.siddha@...el.com>,
	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Dipankar Sarma <dipankar@...ibm.com>,
	Vatsa <vatsa@...ux.vnet.ibm.com>,
	Gautham R Shenoy <ego@...ibm.com>,
	Andi Kleen <andi@...stfloor.org>,
	Gregory Haskins <gregory.haskins@...il.com>,
	Mike Galbraith <efault@....de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arun Bharadwaj <arun@...ux.vnet.ibm.com>
Subject: Re: [RFC PATCH v2 0/2] Saving power by cpu
 evacuationsched_max_capacity_pct=n

On Wed, 2009-05-13 at 19:15 +0530, Balbir Singh wrote:
> * Peter Zijlstra <a.p.zijlstra@...llo.nl> [2009-05-13 15:14:57]:
> 
> > On Wed, 2009-05-13 at 18:41 +0530, Vaidyanathan Srinivasan wrote:
> > 
> > > * Peter Zijlstra wanted more justifications for throttling at the core
> > >   level.  Throttling may be a resource management problem rather than
> > >   scheduler/load balancer
> > 
> > No, I mandate that it be thermal management. Any other reason and you've
> > got a NAK.
> 
> We've been discussing hard limits from the resource management view
> point. Bharata is working on a RFC that we should be able to share
> soon

Right, and you well know I dislike them.

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