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Date: Wed, 23 Jan 2013 10:01:00 +0800 From: Alex Shi <alex.shi@...el.com> To: Mike Galbraith <efault@....de> CC: Paul Turner <pjt@...gle.com>, Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, Andrew Morton <akpm@...ux-foundation.org>, Arjan van de Ven <arjan@...ux.intel.com>, Borislav Petkov <bp@...en8.de>, namhyung@...nel.org, Vincent Guittot <vincent.guittot@...aro.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, preeti@...ux.vnet.ibm.com, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v3 09/22] sched: compute runnable load avg in cpu_load and cpu_avg_load_per_task On 01/23/2013 09:47 AM, Mike Galbraith wrote: > On Wed, 2013-01-23 at 08:36 +0800, Alex Shi wrote: >> On 01/22/2013 05:52 PM, Mike Galbraith wrote: >>> On Tue, 2013-01-22 at 15:50 +0800, Alex Shi wrote: >>> >>>> Thanks for your suggestions and example, Mike! >>>> I just can't understand the your last words here, Sorry. what the >>>> detailed concern of you on 'both performance profiles with either >>>> metric'? Could you like to give your preferred solutions? >>> >>> Hm.. I'll try rephrasing. Any power saving gain will of necessity be >>> paid for in latency currency. I don't have a solution other than make a >>> button, let the user decide whether history influences fast path task >>> placement or not. Any other decision maker will get it wrong. >> >> Um, if no other objection, I'd like to move the runnable load only used >> for power friendly policy -- for this patchset, they are 'powersaving' >> and 'balance', Can I? > > Yeah, that should work be fine. Thanks for comments! :) > > -Mike > -- Thanks Alex -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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