linux-kernel - Re: [ISSUE] sched/cgroup: Does cpu-cgroup still works fine nowadays?

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Message-ID: <5375C907.7060601@linux.vnet.ibm.com>
Date:	Fri, 16 May 2014 16:15:03 +0800
From:	Michael wang <wangyun@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	Mike Galbraith <umgwanakikbuti@...il.com>,
	Rik van Riel <riel@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, Alex Shi <alex.shi@...aro.org>,
	Paul Turner <pjt@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Daniel Lezcano <daniel.lezcano@...aro.org>
Subject: Re: [ISSUE] sched/cgroup: Does cpu-cgroup still works fine nowadays?

On 05/16/2014 03:54 PM, Peter Zijlstra wrote:
[snip]
>>> Right.  I played a little (sane groups), saw load balancing as well.
>>
>> Yeah, now we found that even l2 groups will face the same issue, allow
>> me to re-list the details here:
> 
> Hmm, that _should_ more or less work and does indeed suggest there's
> something iffy.

Yeah, sane group topology also issued... besides the sleeper bonus, it
seems like the root cause is tasks starting to gather, I plan to check
the difference on task load between two cases, see if there is a good
way to solve this problem :)

Regards,
Michael Wang

> 

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