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

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Message-Id: <1202554705.10287.12.camel@homer.simson.net>
Date:	Sat, 09 Feb 2008 11:58:25 +0100
From:	Mike Galbraith <efault@....de>
To:	Willy Tarreau <w@....eu>
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, 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.

	-Mike

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