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

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Message-ID: <20080209114009.GP8953@1wt.eu>
Date:	Sat, 9 Feb 2008 12:40:10 +0100
From:	Willy Tarreau <w@....eu>
To:	Mike Galbraith <efault@....de>
Cc:	Olof Johansson <olof@...om.net>, linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: Scheduler(?) regression from 2.6.22 to 2.6.24 for short-lived threads

On Sat, Feb 09, 2008 at 11:58:25AM +0100, Mike Galbraith wrote:
> 
> On Sat, 2008-02-09 at 09:03 +0100, Willy Tarreau wrote:
> 
> > How many CPUs do you have ?
> 
> It's a P4/HT, so 1 plus $CHUMP_CHANGE_MAYBE
> 
> > > 2.6.25-smp (git today)
> > > time 29 ms
> > > time 61 ms
> > > time 72 ms
> > 
> > These ones look rather strange. What type of workload is it ? Can you
> > publish the program for others to test it ?
> 
> It's the proglet posted in this thread.

OK sorry, I did not notice it when I first read the report.

Regards,
Willy

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