linux-kernel - Re: [patch v6 8/8] sched: remove blocked_load

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Date:	Tue, 14 May 2013 19:35:25 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	mingo@...hat.com, tglx@...utronix.de, akpm@...ux-foundation.org,
	bp@...en8.de, pjt@...gle.com, namhyung@...nel.org, efault@....de,
	morten.rasmussen@....com, vincent.guittot@...aro.org,
	preeti@...ux.vnet.ibm.com, viresh.kumar@...aro.org,
	linux-kernel@...r.kernel.org, mgorman@...e.de, riel@...hat.com,
	wangyun@...ux.vnet.ibm.com
Subject: Re: [patch v6 8/8] sched: remove blocked_load_avg in tg

On 05/14/2013 04:31 PM, Peter Zijlstra wrote:
> On Fri, May 10, 2013 at 11:17:29PM +0800, Alex Shi wrote:
>> > blocked_load_avg sometime is too heavy and far bigger than runnable load
>> > avg. that make balance make wrong decision. So better don't consider it.
> Would you happen to have an example around that illustrates this? 

Sorry, No.
> 
> Also, you've just changed the cgroup balancing -- did you run any tests on that?
> 

I tested all benchmarks on cover letter maintained, aim7, kbuild etc.
with autogroup enabled. There is no clear performance change.
But since the machine just run benchmark without anyother load, that
doesn't enough.

-- 
Thanks
    Alex
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