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

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Message-ID: <20140515083531.GE30445@twins.programming.kicks-ass.net>
Date:	Thu, 15 May 2014 10:35:31 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michael wang <wangyun@...ux.vnet.ibm.com>
Cc:	Rik van Riel <riel@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, Mike Galbraith <efault@....de>,
	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 Thu, May 15, 2014 at 11:46:06AM +0800, Michael wang wrote:
> But for the dbench, stress combination, that's not spin-wasted, dbench
> throughput do dropped, how could we explain that one?

I've no clue what dbench does.. At this point you'll have to
expose/trace the per-task runtime accounting for these tasks and ideally
also the things the cgroup code does with them to see if it still makes
sense.

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