From: Matthias Urlichs <smurf@smurf.noris.de>
To: linux-kernel@vger.kernel.org
Subject: Re: What exactly are the issues with 2.6.0-test10 preempt?
Date: Sun, 30 Nov 2003 10:09:28 +0100 [thread overview]
Message-ID: <pan.2003.11.30.09.09.28.112431@smurf.noris.de> (raw)
In-Reply-To: 20031124191459.99375.qmail@web40902.mail.yahoo.com
Hi, Bradley Chapman wrote:
> So what exactly is the problem?
I'm seeing
- User Interface corruption under X. That shows as random processes
crashing with SIGFPE (interestingly, often two unrelated X processes crash
at the same time -- sometimes one of them is the server) or SEGV,
I just switched to -test11 and turned off preemption. I don't see any more
crashes or weird behavior, but now performance sucks -- console scrolling
(frame buffer) stalls for seconds, keyboard repeat likewise, and the X
server suddenly decides it wants twice the CPU (60% instead of 30%).
I'll rebuild test11 with preempt and check whether there are any changes.
(Yes I know, changing two variables at the same time was somewhat stupid.)
--
Matthias Urlichs | {M:U} IT Design @ m-u-it.de | smurf@smurf.noris.de
Disclaimer: The quote was selected randomly. Really. | http://smurf.noris.de
- -
If you're careful enough, nothing bad or good will ever happen to you.
next prev parent reply other threads:[~2003-11-30 9:09 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-24 19:14 What exactly are the issues with 2.6.0-test10 preempt? Bradley Chapman
2003-11-24 21:08 ` Guennadi Liakhovetski
2003-11-24 21:29 ` Bradley Chapman
2003-11-24 21:47 ` Guennadi Liakhovetski
2003-11-24 21:55 ` Bradley Chapman
2003-11-24 21:59 ` Linus Torvalds
2003-11-24 22:26 ` Bradley Chapman
2003-11-24 22:32 ` Linus Torvalds
2003-11-24 22:45 ` Bradley Chapman
2003-11-24 23:00 ` Linus Torvalds
2003-11-24 23:45 ` Linus Torvalds
2003-11-25 7:55 ` Jos Hulzink
2003-11-24 22:41 ` Måns Rullgård
2003-11-24 22:51 ` Mike Fedyk
2003-11-25 1:37 ` Måns Rullgård
2003-11-25 17:22 ` bill davidsen
2003-11-24 22:57 ` Guennadi Liakhovetski
2003-11-25 7:17 ` Guennadi Liakhovetski
2003-11-25 16:20 ` Linus Torvalds
2003-11-30 9:09 ` Matthias Urlichs [this message]
[not found] <20031124224514.56242.qmail@web40908.mail.yahoo.com.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.58.0311241452550.15101@home.osdl.org.suse.lists.linux.kernel>
2003-11-24 23:50 ` Andi Kleen
2003-11-25 0:00 ` Mike Fedyk
2003-11-25 0:05 ` Andi Kleen
2003-11-25 0:16 ` Chris Mason
2003-11-25 18:13 kernel
2003-11-25 18:14 root
2003-11-25 18:31 kernel
2003-11-26 9:30 ` Jens Axboe
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