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From: Andi Kleen <ak@muc.de>
To: Erich Focht <efocht@hpce.nec.com>
Cc: "Martin J. Bligh" <mbligh@aracnet.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	LSE <lse-tech@lists.sourceforge.net>, Andi Kleen <ak@muc.de>,
	torvalds@osdl.org
Subject: Re: [patch] scheduler fix for 1cpu/node case
Date: Tue, 29 Jul 2003 16:41:29 +0200	[thread overview]
Message-ID: <20030729144129.GA30393@averell> (raw)
In-Reply-To: <200307282218.19578.efocht@hpce.nec.com>

On Mon, Jul 28, 2003 at 10:18:19PM +0200, Erich Focht wrote:
> > > So x86_64 platforms
> > > (but not only those!) suffer and whish to switch off the NUMA
> > > scheduler while keeping NUMA memory management on.
> >
> > Right - I have a patch to make it a config option (CONFIG_NUMA_SCHED)
> > ... I'll feed that upstream this week.
> 
> That's one way, but the proposed patch just solves the problem (in a
> more general way, also for other NUMA cases). If you deconfigure NUMA
> for a NUMA platform, we'll have problems switching it back on when
> adding smarter things like node affine or homenode extensions.

That's one important point IMHO. Currently Opteron does not really 
need the NUMA scheduler, but it will be in future with such extensions.
This means it would be better if the current scheduler supports 
it already so that it can be easily extended.

Thanks for the patch.

-Andi

  parent reply	other threads:[~2003-07-29 14:42 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-28 19:16 [patch] scheduler fix for 1cpu/node case Erich Focht
2003-07-28 19:55 ` Martin J. Bligh
2003-07-28 20:18   ` Erich Focht
2003-07-28 20:37     ` Martin J. Bligh
2003-07-29  2:24       ` Andrew Theurer
2003-07-29 10:08         ` Erich Focht
2003-07-29 13:33           ` [Lse-tech] " Andrew Theurer
2003-07-30 15:23             ` Erich Focht
2003-07-30 15:44               ` Andrew Theurer
2003-07-29 14:27           ` Martin J. Bligh
2003-08-13 20:49         ` Bill Davidsen
2003-08-22 15:46           ` [Lse-tech] " Andrew Theurer
2003-08-22 22:56             ` Nick Piggin
2003-08-23  0:12               ` Andrew Theurer
2003-08-23  0:29                 ` Nick Piggin
2003-08-23  0:47                   ` William Lee Irwin III
2003-08-23  8:48                     ` Nick Piggin
2003-08-23 14:32                   ` Andrew Theurer
2003-08-23  1:31                 ` Martin J. Bligh
2003-07-29 10:08       ` Erich Focht
2003-07-29 14:41     ` Andi Kleen [this message]
2003-07-31 15:05 ` Martin J. Bligh
2003-07-31 21:45   ` Erich Focht
2003-08-01  0:26     ` Martin J. Bligh
2003-08-01 16:30       ` [Lse-tech] " Erich Focht

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