From: Jim Houston <jim.houston@attbi.com>
To: linux-kernel@vger.kernel.org, mingo@elte.hu
Subject: Re: [PATCH] set_cpus_allowed() for 2.4
Date: Sun, 08 Dec 2002 22:02:58 -0500 [thread overview]
Message-ID: <3DF407E2.E974D5F8@attbi.com> (raw)
Hi Everyone,
I ran into a lockup with the O(1) scheduler back in August and
exchanged email with Andrea. I tried a couple of his patches.
They prevented the lockup but it was still easy to have the
X server exiled to the inactive array for seconds at a time.
This got me started working on a patch to make the schedule
more fair.
I posted a patch archive here:
http://marc.theaimsgroup.com/?l=linux-kernel&m=103508412423719&w=2
It fixes fairness but breaks nice(2). Rik van Riel has a
patch here which builds on my patch which fixes this:
http://marc.theaimsgroup.com/?l=linux-kernel&m=103651801424031&w=2
I tested the combination of these patches with linux-2.5.48 and
it seems well behaved:-)
I found this problem with the LTP waitpid06 test. It actually
produced a live-lock. See this mail:
http://marc.theaimsgroup.com/?l=linux-kernel&m=103133744217082&w=2
I have been distracted by Posix timers but I plan to get back
finish this.
Jim Houston - Concurrent Computer Corp.
next reply other threads:[~2002-12-09 2:55 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-09 3:02 Jim Houston [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-12-13 23:08 Christoph Hellwig
2002-12-13 21:34 ` Adrian Bunk
2002-12-14 4:55 ` Christoph Hellwig
2002-12-09 20:19 kernel
2002-12-03 0:26 Christoph Hellwig
2002-12-02 17:24 ` Jeff Garzik
2002-12-02 18:57 ` Robert Love
2002-12-03 0:51 ` Christoph Hellwig
2002-12-02 17:50 ` Martin J. Bligh
2002-12-02 18:50 ` Adrian Bunk
2002-12-02 19:12 ` Robert Love
2002-12-02 19:30 ` Andrew Morton
2002-12-02 19:50 ` Andrea Arcangeli
2002-12-03 20:49 ` Andrew Morton
2002-12-03 21:09 ` Martin J. Bligh
2002-12-04 0:09 ` Andrea Arcangeli
2002-12-04 0:06 ` Andrea Arcangeli
2002-12-04 0:30 ` Andrew Morton
2002-12-04 0:42 ` Andrea Arcangeli
2002-12-04 1:03 ` William Lee Irwin III
2002-12-04 9:25 ` William Lee Irwin III
2002-12-04 1:14 ` Andrew Morton
2002-12-04 1:21 ` Andrea Arcangeli
2002-12-04 2:14 ` Andrew Morton
2002-12-06 18:11 ` William Lee Irwin III
2002-12-08 13:23 ` Ingo Molnar
2002-12-08 19:56 ` Andrew Morton
2002-12-09 20:13 ` Ingo Molnar
2002-12-03 1:11 ` Christoph Hellwig
2002-12-02 18:59 ` Robert Love
2002-12-02 22:47 ` Alan Cox
2002-12-02 22:38 ` Christoph Hellwig
2002-12-02 22:41 ` Robert Love
2002-12-07 16:55 ` bill davidsen
2002-10-01 23:03 Robert Love
2002-10-02 13:01 ` Christoph Hellwig
2002-10-02 15:00 ` Robert Love
2002-11-05 3:37 ` Christoph Hellwig
2002-11-06 15:32 ` Adrian Bunk
2002-11-07 21:42 ` Christoph Hellwig
2002-12-02 17:12 ` Mikael Pettersson
2002-12-03 0:51 ` Christoph Hellwig
2002-12-02 17:47 ` Mikael Pettersson
2002-12-02 19:10 ` Robert Love
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