linux-kernel - Re: [discussion]sched: a rough proposal to enable power saving in scheduler

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Message-ID: <50323AFD.7030802@linux.intel.com>
Date:	Mon, 20 Aug 2012 06:26:21 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Ingo Molnar <mingo@...nel.org>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Alex Shi <alex.shi@...el.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	vincent.guittot@...aro.org, svaidy@...ux.vnet.ibm.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul Turner <pjt@...gle.com>
Subject: Re: [discussion]sched: a rough proposal to enable power saving in
 scheduler

On 8/20/2012 1:06 AM, Ingo Molnar wrote:
> 
> 
> There's also cases where the kernel has insufficient information 
> from the hardware and from the admin about the preferred 
> characteristics/policy of the system - a tweakable fallback knob 
> might be provided for that sad case.
> 
> The point is, that knob is not the policy setting and it's not 
> the main mechanism. It's a fallback.

if we call the knob "powersave", it better save power...
if we call it "group together" or "spread out".. no problem with that.




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