From: Rik van Riel <riel@imladris.surriel.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] Re: web page on O(1) scheduler
Date: Thu, 22 May 2003 00:38:56 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590723705979@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590723705966@msgid-missing>
On Wed, 21 May 2003, Mike Galbraith wrote:
> At 11:49 PM 5/20/2003 -0700, David Mosberger wrote:
> >Recently, I started to look into some odd performance behaviors of the
> >O(1) scheduler. I decided to document what I found in a web page
> >at:
> >
> > http://www.hpl.hp.com/research/linux/kernel/o1.php
>
> The page mentions persistent starvation. My own explorations of this
> issue indicate that the primary source is always selecting the highest
> priority queue.
It's deeper than that. The O(1) scheduler doesn't consider
actual CPU usage as a factor of CPU priority.
Rik
--
Engineers don't grow up, they grow sideways.
http://www.surriel.com/ http://kernelnewbies.org/
next prev parent reply other threads:[~2003-05-22 0:38 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-21 9:01 [Linux-ia64] Re: web page on O(1) scheduler Arjan van de Ven
2003-05-21 9:26 ` Mike Galbraith
2003-05-21 9:30 ` Mike Galbraith
2003-05-21 10:40 ` Duraid Madina
2003-05-21 10:43 ` Christoph Hellwig
2003-05-21 15:18 ` David Mosberger
2003-05-21 17:56 ` David Mosberger
2003-05-21 20:46 ` Mike Galbraith
2003-05-22 0:38 ` Rik van Riel [this message]
2003-05-22 5:52 ` Mike Galbraith
2003-05-22 9:52 ` Mike Galbraith
2003-05-22 16:25 ` Mike Galbraith
2003-05-22 17:58 ` David Mosberger
2003-05-23 1:07 ` Hans Boehm
2003-05-23 8:30 ` Arjan van de Ven
2003-05-23 17:48 ` Boehm, Hans
2003-05-23 18:04 ` Davide Libenzi
2003-05-24 0:10 ` Boehm, Hans
2003-05-24 0:20 ` Davide Libenzi
2003-05-24 0:53 ` Boehm, Hans
2003-05-24 5:38 ` Davide Libenzi
2003-05-24 14:43 ` Davide Libenzi
2003-05-24 16:50 ` Hans Boehm
2003-05-24 21:41 ` Davide Libenzi
2003-05-25 9:17 ` Mike Galbraith
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