From: Peter Zijlstra <peterz@infradead.org>
To: Michael wang <wangyun@linux.vnet.ibm.com>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>,
Rik van Riel <riel@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>, Alex Shi <alex.shi@linaro.org>,
Paul Turner <pjt@google.com>, Mel Gorman <mgorman@suse.de>,
Daniel Lezcano <daniel.lezcano@linaro.org>
Subject: Re: [ISSUE] sched/cgroup: Does cpu-cgroup still works fine nowadays?
Date: Fri, 16 May 2014 09:54:21 +0200 [thread overview]
Message-ID: <20140516075421.GL11096@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <53759303.40409@linux.vnet.ibm.com>
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On Fri, May 16, 2014 at 12:24:35PM +0800, Michael wang wrote:
> Hey, Mike :)
>
> On 05/16/2014 10:51 AM, Mike Galbraith wrote:
> > On Fri, 2014-05-16 at 10:23 +0800, Michael wang wrote:
> >
> >> But we found that one difference when group get deeper is the tasks of
> >> that group become to gathered on CPU more often, some time all the
> >> dbench instances was running on the same CPU, this won't happen for l1
> >> group, may could explain why dbench could not get CPU more than 100% any
> >> more.
> >
> > 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.
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next prev parent reply other threads:[~2014-05-16 7:54 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-13 3:34 Michael wang
2014-05-13 9:47 ` Peter Zijlstra
2014-05-13 13:36 ` Rik van Riel
2014-05-13 14:23 ` Peter Zijlstra
2014-05-14 3:27 ` Michael wang
2014-05-14 7:36 ` Michael wang
2014-05-14 9:44 ` Peter Zijlstra
2014-05-15 3:46 ` Michael wang
2014-05-15 8:35 ` Peter Zijlstra
2014-05-15 8:46 ` Michael wang
2014-05-15 9:06 ` Peter Zijlstra
2014-05-15 9:35 ` Michael wang
2014-05-15 11:57 ` Peter Zijlstra
2014-05-16 2:23 ` Michael wang
2014-05-16 2:51 ` Mike Galbraith
2014-05-16 4:24 ` Michael wang
2014-05-16 7:54 ` Peter Zijlstra [this message]
2014-05-16 8:15 ` Michael wang
2014-06-10 8:56 ` Michael wang
2014-06-10 12:12 ` Peter Zijlstra
2014-06-11 6:13 ` Michael wang
2014-06-11 8:24 ` Peter Zijlstra
2014-06-11 9:18 ` Michael wang
2014-06-23 9:42 ` Peter Zijlstra
2014-06-24 3:10 ` Michael wang
2014-05-16 7:48 ` Peter Zijlstra
2014-05-14 3:21 ` Michael wang
2014-05-14 3:16 ` Michael wang
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