linux-kernel - Re: Scheduler(?) regression from 2.6.22 to 2.6.24 for short-lived threads

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Message-ID: <20080209000829.GA29986@elte.hu>
Date:	Sat, 9 Feb 2008 01:08:30 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Olof Johansson <olof@...om.net>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: Scheduler(?) regression from 2.6.22 to 2.6.24 for short-lived
	threads


* Olof Johansson <olof@...om.net> wrote:

> 2.6.22: 3332 ms
> 2.6.23: 4397 ms
> 2.6.24: 8953 ms
> 2.6.24-git19: 8986 ms

if you enable SCHED_DEBUG, and subtract 4 from the value of 
/proc/sys/kernel/sched_features, does it get any better?

if not, does writing 0 into /proc/sys/kernel/sched_features have any 
impact?

	Ingo
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