linux-kernel - Re: [RFC][PATCH] sched: avoid huge bonus to sleepers on busy machines

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Message-ID: <1262608597.6408.117.camel@laptop>
Date:	Mon, 04 Jan 2010 13:36:37 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mike Galbraith <efault@....de>
Cc:	Suresh Jayaraman <sjayaraman@...e.de>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] sched: avoid huge bonus to sleepers on busy
 machines

On Mon, 2010-01-04 at 13:30 +0100, Mike Galbraith wrote:
> Any diddling of sleeper fairness would have to be accompanied with a
> preemption model change methinks. 

Just told jays the exact same thing on IRC ;-)

Also, workloads are interesting, the signal test thing is the easiest to
test the preemption side, various things like QPID show the down-side
iirc.

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