Date: Fri, 2 Sep 2005 14:09:24 -0400 From: John Baldwin <jhb@FreeBSD.org> To: freebsd-hackers@freebsd.org Cc: Koen Martens <fbsd@metro.cx> Subject: Re: panic in propagate_priority w/ postgresql under heavy load Message-ID: <200509021409.25056.jhb@FreeBSD.org> In-Reply-To: <43177AD3.7070308@metro.cx> References: <4317340E.2050208@metro.cx> <200509011348.50159.jhb@FreeBSD.org> <43177AD3.7070308@metro.cx>
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On Thursday 01 September 2005 06:04 pm, Koen Martens wrote: > John Baldwin wrote: > > On Thursday 01 September 2005 01:02 pm, Koen Martens wrote: > >>I've had a little chat with neologism on ircnet/#freebsd about this > >>already, and done as he suggested: compile a debug kernel to obtain > >>a stack trace. > > > > Can you reproduce it with a kernel that has INVARIANTS and > > INVARIANT_SUPPORT on? I see that you had WITNESS on, can you check to > > see if there were any witness messages about sleepign with non-sleepable > > locks held before the crash? > > I will do this when I get back. I did a grep -i on witness in the > console log but this did not turn up anything suspicious (exact > output pasted below). Also, i checked again the logs right before > the crashes, nothing special output to console before the Kernel > trap 12.. > > > voltaire# grep -i witness yin.log > WARNING: WITNESS option enabled, expect reduced performance. > witness_get: witness exhausted > WARNING: WITNESS option enabled, expect reduced performance. > witness_get: witness exhausted This last means that witness had turned itself off because it had run out of resources. Try bumping up the WITNESS_COUNT constant in sys/kern/subr_witness.c. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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