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Re: System freezes with high kernel CPU usage

To: linux-xfs@xxxxxxxxxxx
Subject: Re: System freezes with high kernel CPU usage
From: Russell Howe <rhowe@xxxxxxxxxx>
Date: Wed, 21 Aug 2002 05:47:03 +0100
In-reply-to: <20020820153329.GA13136@xiao>
References: <20020820153329.GA13136@xiao>
Sender: owner-linux-xfs@xxxxxxxxxxx
User-agent: Mutt/1.4i
On Tue, Aug 20, 2002 at 04:33:38PM +0100, Russell Howe wrote:
> Hi,
> 
> XFS has been performing great for me so far on my desktop machine (a
> dual CPU system), although lately I've noticed some odd behaviour. The
> system will lock up for several seconds, respond for a split second,
> then lock up again for another 5-10 seconds or so, then again, this goes
> on for a minute or two. The system isn't under any load at the time, X
> is running, noatun open playing MP3s (although without the rest of KDE).
> Just light normal use.

OK, the system just locked up completely. I had to power-cycle it.
15mins after it had booted, the same thing as described previously
happened, so it's not really related to something that accumulates over
time. I'd only just logged into gdm and loaded an IRC client before it
froze.

I managed to do some rough timings of the freezes.. they went on for 3
or 4 mins, and the system remained frozen at 100% kernel CPU for about
15-20 seconds at a time (I think I was measuring 25 seconds, then 20,
then 15 for the last minute or so). Afterwards, the system responds
normally.

I will checkout the latest CVS (proper 2.4.19 etc) and see if that makes
any difference. Any idea if it is likely to?

-- 
Russell Howe     | Why be just another cog in the machine,
rhowe@xxxxxxxxxx | when you can be the spanner in the works?


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