From: David Coulson <david@davidcoulson.net>
To: Jeff Dike <jdike@karaya.com>
Cc: Marcelo Tosatti <marcelo@conectiva.com.br>,
wstearns@posbox.com, linux-kernel@vger.kernel.org,
UML devel <user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] Re: swap_dup/swap_free errors with 2.4.20-pre10
Date: Thu, 17 Oct 2002 11:20:26 +0100 [thread overview]
Message-ID: <3DAE8EEA.4080804@davidcoulson.net> (raw)
In-Reply-To: 200210170202.VAA05667@ccure.karaya.com
Jeff Dike wrote:
> I've seen this bug multiple times. Basically, something is holding a
> mm_sem and not letting go. Anything that walks the process list hangs.
> Ultimately, this hangs anything that's remotely useful, and you have to
> crash the box.
Indeed. I experienced the problem every 24-36hrs around five times in a
row last week. Pretty much every morning, I'd come in and the box was
completly dead. It seems to be okay at the moment, but I'm not holding
my breath.
> One factoid that I forgot to mention there is that when it happens on my
> laptop, the disk activity light is stuck on.
My box doesn't have a light, but what I got from SNMP before the box
died suggested that the system (e.g. the 'system' CPU usage MIB) was
using a considerable amount of CPU time (>95%), so I'm not sure if it
was swapping madly, or if something else was going on.
David
--
David Coulson http://davidcoulson.net/
d@vidcoulson.com http://journal.davidcoulson.net/
prev parent reply other threads:[~2002-10-17 10:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-15 11:47 swap_dup/swap_free errors with 2.4.20-pre10 David Coulson
2002-10-16 21:23 ` Marcelo Tosatti
2002-10-16 22:14 ` David Coulson
2002-10-17 2:02 ` [uml-devel] " Jeff Dike
2002-10-17 10:20 ` David Coulson [this message]
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