linux-kernel - Re: Sched_autogroup and niced processes

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Message-ID: <1305293070.2466.32.camel@twins>
Date:	Fri, 13 May 2011 15:24:30 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Mike Galbraith <efault@....de>
Cc:	Ingo Molnar <mingo@...e.hu>, Yong Zhang <yong.zhang0@...il.com>,
	Carl-Johan Kjellander <carl-johan@...rna.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Sched_autogroup and niced processes

On Fri, 2011-05-13 at 15:13 +0200, Mike Galbraith wrote:
> 
> > Still, the other important problem is that we still seem to have a bug, even 
> > with the cgroup set to low prio seti@...e is sucking up CPU resources ...
> 
> I don't see how.  

Agreed, with two groups, a spinner each, and then setting the group
weight low yields things like:

 1927 root      20   0  105m  672  192 R 98.1  0.0   0:20.50 bash  
 1933 root      20   0  105m  656  180 R  2.0  0.0   0:07.29 bash  

So all just seems to work as advertised.
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