From: Jesse Barnes <jbarnes@sgi.com>
To: Mike Kravetz <kravetz@us.ibm.com>
Cc: lse-tech@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [Lse-tech] NUMA scheduling
Date: Fri, 22 Feb 2002 11:14:04 -0800 [thread overview]
Message-ID: <20020222111404.A1515593@sgi.com> (raw)
In-Reply-To: <20020222105606.C1575@w-mikek2.des.beaverton.ibm.com>
In-Reply-To: <20020222105606.C1575@w-mikek2.des.beaverton.ibm.com>
On Fri, Feb 22, 2002 at 10:56:06AM -0800, Mike Kravetz wrote:
> Below is preliminary patch to implement some form of NUMA scheduling
> on top of Ingo's K3 scheduler patch for 2.4.17. This is VERY early
> code and brings up some issues that need to be discussed/explored in
> more detail. This patch was created to form a basis for discussion,
> rather than as a solution. The patch was created for the i386 based
> NUMA system I have access to. It will not work on other architectures.
> However, the only architecture specific code is a call to initialize
> some of the NUMA specific scheduling data structures. Therefore, it
> should be trivial to port.
Ah, you beat me to it; I was working on code very similar to this when
I got your e-mail. I think this sort of thing will address the
problem we've been seeing on machines with more than 16 cpus or so
(IDLE_REBALANCE_TICK is too small, flooding CPUs with load_balance
requests), as well as making numa scheduling a little more efficient.
I'll see if I can make it work on our platform and let you know how it
goes.
Jesse
next prev parent reply other threads:[~2002-02-22 19:14 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-22 18:56 NUMA scheduling Mike Kravetz
2002-02-22 19:14 ` Jesse Barnes [this message]
2002-02-22 19:29 ` [Lse-tech] " Peter Rival
2002-02-22 23:59 ` Mike Kravetz
2002-02-25 18:32 ` Erich Focht
2002-02-25 18:55 ` Martin J. Bligh
2002-02-25 19:03 ` Larry McVoy
2002-02-25 19:28 ` Davide Libenzi
2002-02-25 19:45 ` Davide Libenzi
2002-02-25 19:35 ` Timothy D. Witham
2002-02-25 19:49 ` Bill Davidsen
2002-02-25 20:02 ` Larry McVoy
2002-02-25 20:18 ` Davide Libenzi
2002-02-26 5:14 ` Bill Davidsen
2002-02-25 23:35 ` [Lse-tech] [rebalance at: do_fork() vs. do_execve()] " Andy Pfiffer
2002-02-26 10:33 ` [Lse-tech] " Erich Focht
2002-02-26 15:30 ` Martin J. Bligh
2002-02-27 16:56 ` Erich Focht
2002-02-26 19:03 ` Mike Kravetz
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