Date: Tue, 30 Oct 2007 20:54:34 +0100 From: Kris Kennaway <kris@FreeBSD.org> To: Rainer Hurling <rhurlin@gwdg.de> Cc: freebsd-stable@freebsd.org, eugen@kuzbass.ru, Oleg Derevenetz <oleg@vsi.ru> Subject: Re: kern/104406: [ufs] Processes get stuck in "ufs" state underpersistent CPU load Message-ID: <47278BFA.90705@FreeBSD.org> In-Reply-To: <4719F786.80708@gwdg.de> References: <027d01c8125c$73d4db80$c8c55358@delloleg><20071019220501.GL31826@elvis.mu.org> <20071020082724.GA87825@svzserv.kemerovo.su> <008d01c812f5$7aad62d0$eec55358@W2KOOOD> <4719F786.80708@gwdg.de>
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Rainer Hurling wrote: > Looking into PR kern/104406 it seems, that this describes exactly what I > am experiencing on three of my systems over the last weeks. They are > running FreeBSD 8.0-CURRENT (known as 7.0-CURRENT not long ago ;-) ). Actually it sounds nothing like it at all ;) > On these machines I often observe hangings, sometimes only a few > seconds, on other times 20-30 seconds before input/output is back. This > seems to happen when more extensive disk usage is needed (portupgrade, > buildworld, browsing complicated websites etc.). During the hang even > xterm is not responding any more, other (diskless) applications like > xclock keep to continue. I have no panics, only UFS (and MSDOSFS) are > mounted, no NTFS. About two months ago none of my systems showed these > hangings. Is your system swapping? This is the usual cause of pauses during high application (actually memory) load. Kris
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