From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Holger.Wolf@de.ibm.com, schwidefsky@de.ibm.com,
linux-kernel@vger.kernel.org
Subject: Re: Scheduler behaviour
Date: Wed, 5 Dec 2007 22:21:55 +0100 [thread overview]
Message-ID: <20071205212155.GA4764@elte.hu> (raw)
In-Reply-To: <1196889302.6353.29.camel@lappy>
* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> > We discovered performance degradation with dbench when using kernel
> > 2.6.23 compared to kernel 2.6.22.
>
> We've fixed a lot of regressions and made a lot of other changes to
> the scheduler since .23. Could you please try the backport of the
> latest scheduler on top of .23 to see if any of our recent work solved
> your problem? (using a backport against .23 or even .22 allows you to
> test just the scheduler changes in isolation)
actually, i'd suggest to use the CFS backport against .22 right away:
> http://people.redhat.com/mingo/cfs-scheduler/sched-cfs-v2.6.22.13-v24.patch
that would exclude all other changes that happened in 2.6.23.
Ingo
next prev parent reply other threads:[~2007-12-05 21:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-05 20:15 Scheduler behaviour Holger Wolf
2007-12-05 21:15 ` Peter Zijlstra
2007-12-05 21:21 ` Ingo Molnar [this message]
2007-12-05 21:26 ` Arjan van de Ven
2007-12-06 21:53 ` Jarek Poplawski
2007-12-07 16:29 ` Holger Wolf
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