Date: Tue, 7 Jun 2005 02:40:02 +0200 From: "Daniel Eriksson" <daniel_k_eriksson@telia.com> To: <freebsd-current@FreeBSD.org> Subject: RE: Livelock seen on current with threaded processes Message-ID: <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA0VcX9IoJqUaXPS8MjT1PdsKAAAAQAAAAcgzDxpQAJECnrNg7KDFKNAEAAAAA@telia.com> In-Reply-To: <20050606032025.CC7A35D08@ptavv.es.net>
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Kevin Oberman wrote: > I run transcode on a video file to convert it to divx4 using the xvid4 > library. I do this with nice set to 10 and top confirms that it is set > to 10. At various times, the system starts locking up. Windows won't > refresh. Shell commands never execute (nor do keys echo) in > some windows > including syscons vtys. If my gkrellm is still alive (and it usually > is), I see the system at 97% CPU and nothing else busy. There > is a bit a > disk I/O but not much. This sounds a lot like the problems I described in the thread "Serious I/O problems (bad performance and live-lock)" from a few weeks ago. It seems that when the VM subsystem is put under pressure the machine comes to a grinding halt. In my case I could trigger this with a simple 'dd' (on a filesystem, not on a raw device). /Daniel Eriksson
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