From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: jitter test scalability problem - my theory
Date: Fri, 29 Jul 2011 16:35:40 +0200
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Cc: RT <linux-rt-users@vger.kernel.org>, rostedt <rostedt@goodmis.org>
To: Mike Galbraith <mgalbraith@suse.de>
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On Fri, 2011-07-29 at 16:31 +0200, Mike Galbraith wrote:
> So it seems push/pull logic _may_ be my scalability problem.  Even
> though there's nothing that can be pushed/pulled, it's hammering a few
> locks from many cores, so cores perturb each other enough despite
> isolation, to fail once enough cores are active.
> 
> Does that look like a reasonable explanation for my jitter increase? 

It is, Steve actually had patches for that..