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

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Message-ID: <20090514154316.GJ4853@dirshya.in.ibm.com>
Date:	Thu, 14 May 2009 21:13:16 +0530
From:	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	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>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Vatsa <vatsa@...ux.vnet.ibm.com>,
	Gautham R Shenoy <ego@...ibm.com>,
	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 evacuation
	sched_max_capacity_pct=n

* Andi Kleen <andi@...stfloor.org> [2009-05-14 17:06:32]:

> > I think 'scheduler throttling' is good so that we avoid the term 'CPU
> > throttling' or core throttling.  I had named this cpu evacuation or
> > core evacuation just to avoid confusion with hardware throttling.
> 
> Evacuation sounds good, although shouldn't it be package or 
> socket evacuation?

Lets start with 'core evacuation' since that seems to be the lowest
granularity on a threaded system.  We certainly want the framework to
provide socket/package and node evacuation on much larger systems.

--Vaidy
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