Date: Mon, 12 Jan 2009 14:14:06 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Mike Galbraith <efault@gmx.de>
Cc: Brian Rogers <brian@xyzw.org>, linux-kernel@vger.kernel.org,
       Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [BUG] How to get real-time priority using idle priority
Message-ID: <20090112131406.GB670@elte.hu>
References: <4969D0D7.2060401@xyzw.org> <1231736941.6003.7.camel@marge.simson.net> <1231765433.5789.35.camel@marge.simson.net>
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* Mike Galbraith <efault@gmx.de> wrote:

> > I haven't been able to reproduce complete hangs, but with your proggy 
> > adapted to my quad, _and_ the addition of a SCHED_NORMAL hog, I can 
> > reproduce some very bad interactivity, including massive character 
> > repeats while attempting to type, and general "lurchiness" (_bad_ 
> > wakeup latency).  I'll poke it with a sharp stick or two.
> 
> Would you mind trying the below?

i've applied your fix to tip/sched/urgent and merged it into tip/master.

Brian, you might want to test tip/master, as per:

 http://people.redhat.com/mingo/tip.git/README

which now has this fix included. Can you make it break?

	Ingo
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