Messages in this thread | | | Date | Mon, 14 Jul 2003 16:37:08 -0400 | From | Marc Heckmann <> | Subject | Re: 2.4.21 smp: system lockup |
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forgot the attachement...
-m
On Mon, Jul 14, 2003 at 04:32:58PM -0400, Marc Heckmann wrote: > Hi there, > > just realised that I forgot to run ksymoops over the sysrq+t output. > > the resolved output is attached. (it's big, so I had to gzip it.i sorry ). > > Also, I was wondering if the deadlock I encountered might whave been the > IO-pausing under SMP systems that people have been talking about? > > thanks in advance. > > -m > > On Sat, Jul 12, 2003 at 01:10:02PM -0400, Marc Heckmann wrote: > > Hi, > > > > I recently experienced a lockup on an SMP 2.4.21 kernel (vanilla). > > > > The machine was under very heavy IO at the time. (a full backup was in > > progress). gzipped Alt+sysrq+t output is attached. I forgot > > Alt+sysrq+P unfortunatly. > > > > iptables was still functional, it still responded to pings, but > > everything else was locked up. obviously sysrq was still working. I > > managed to reboot it with sysrq+b over the serial line. > > > > the machine has been in production for a while and has run in the past > > for almost 2 months w/o any problems, so I don't believe it's hardware > > related. > > > > A similar lockup happened once with the redhat 2.4.20-13.9 kernel. I > > blamed that on all the extra patches present and switched to 2.4.21 > > hoping that it would alleviate the problem. > > > > PS: I'm not an linux-kernel so please CC me directly. > > > > -m > > [unhandled content-type:application/x-gzip] | |