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From: Christian Hesse <mail@earthworm.de>
To: Ingo Molnar <mingo@elte.hu>
Subject: Re: [patch] CFS scheduler, -v5
Date: Wed, 25 Apr 2007 12:51:44 +0200
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Cc: linux-kernel@vger.kernel.org,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Con Kolivas <kernel@kolivas.org>, Nick Piggin <npiggin@suse.de>,
       Mike Galbraith <efault@gmx.de>, Arjan van de Ven <arjan@infradead.org>,
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       Thomas Gleixner <tglx@linutronix.de>, caglar@pardus.org.tr,
       Willy Tarreau <w@1wt.eu>, Gene Heskett <gene.heskett@gmail.com>,
       Mark Lord <lkml@rtr.ca>, Ulrich Drepper <drepper@redhat.com>
References: <20070420140457.GA14017@elte.hu> <200704241854.47269.mail@earthworm.de> <20070425092544.GA498@elte.hu>
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On Wednesday 25 April 2007, Ingo Molnar wrote:
> * Christian Hesse <mail@earthworm.de> wrote:
> > On Monday 23 April 2007, Ingo Molnar wrote:
> > > i'm pleased to announce release -v5 of the CFS scheduler patchset.
> >
> > Hi Ingo,
> >
> > I just noticed that with cfs all processes (except some kernel
> > threads) run on cpu 0. I don't think this is expected cpu affinity for
> > an smp system? I remember about half of the processes running on each
> > core with mainline.
>
> i've got several SMP systems with CFS and all distribute the load
> properly to all CPUs, so it would be nice if you could tell me more
> about how the problem manifests itself on your system.
>
> for example, if you start two infinite loops:
>
>     for (( N=3D0; N < 2; N++ )); do ( while :; do :; done ) & done
>
> do they end up on the same CPU?
>
> Or do you mean that the default placement of single tasks starts at
> CPU#0, while with mainline they were alternating?

That was not your fault. I updated suspend2 to 2.2.9.13 and everything work=
s=20
as expected again. Sorry for the noise.
=2D-=20
Regards,
Chris

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