From: Ludovic <ldrolez@linbox.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] sched.c: Be a bit more conservative in SMP
Date: Tue, 19 Sep 2006 13:39:21 +0000 (UTC) [thread overview]
Message-ID: <loom.20060919T153419-722@post.gmane.org> (raw)
In-Reply-To: <200609031541.39984.subdino2004@yahoo.fr>
Vincent Pelletier <subdino2004 <at> yahoo.fr> writes:
> I've often seen the following use case happening on the few linux SMP boxes
> I have access to : one process eats one cpu becaus eit has a big
> computation to do, all cpu being idle, and the process keeps on hopping
> from one cpu to another.
> This patch is a quick try to make this behaviour disapear without requiring
> to bind all processes manually with taskset.
> I don't know if there is any practical performance increase (although I
> believe there locally is).
Hi !
Do you know if your patch has been included somewhere ?
We have the same problem on a HPCC here with 4 CPUs per MB, and I don't like
playing with taskset (moreover, performance under Windows *much* is better
without any tuning, shame on us), it would be nice to see less migration when
it's not needed...
Cheers,
Ludovic.
prev parent reply other threads:[~2006-09-19 13:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-03 13:41 Vincent Pelletier
2006-09-03 17:10 ` Vincent Pelletier
2006-09-06 23:30 ` Vincent Pelletier
2006-09-19 14:06 ` Ludovic Drolez
2006-09-19 17:50 ` Antonio Vargas
2006-09-20 7:42 ` Ludovic Drolez
2006-09-20 16:26 ` Poor scheduling when not loaded at 100% (Was: [PATCH] sched.c: Be a bit more conservative in SMP) Ludovic Drolez
2006-09-21 18:36 ` [PATCH] sched.c: Be a bit more conservative in SMP Vincent Pelletier
2006-09-22 7:24 ` Ludovic Drolez
2006-09-22 12:31 ` Antonio Vargas
2006-09-19 13:39 ` Ludovic [this message]
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