linux-kernel - Re: [PATCH v5 3/7] sched: set initial value of runnable avg for new forked task

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Message-ID: <5188DFEF.6010403@intel.com>
Date:	Tue, 07 May 2013 19:05:19 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Morten Rasmussen <morten.rasmussen@....com>,
	Peter Zijlstra <peterz@...radead.org>
CC:	Paul Turner <pjt@...gle.com>, Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	Namhyung Kim <namhyung@...nel.org>,
	Mike Galbraith <efault@....de>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Michael Wang <wangyun@...ux.vnet.ibm.com>
Subject: Re: [PATCH v5 3/7] sched: set initial value of runnable avg for new
 forked task

On 05/07/2013 05:57 PM, Morten Rasmussen wrote:
> Agree. The tracked load of new tasks is often very unstable during first
> couple of ms on loaded systems. I'm not sure if 1024 is the right
> initial value. It may need to be larger.

Maybe Peter can give a better value according to the experience on
scheduler. :)

-- 
Thanks
    Alex
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