Re: KVM host freezing

Marc Haber
2011-06-02T20:36:07Z

On Thu, Jun 02, 2011 at 04:41:30PM +0300, Avi Kivity wrote:
> On 06/02/2011 11:25 AM, Marc Haber wrote:
> >Is there any possibility that the freezes have to do with the
> >"unhandles (rd|wr)msr" messages?
>
> Very unlikely.

What does that mean anyway? It's looked with sufficiently high
priority to get spewed onto the console.

> >When else could be the cause?
> >
> >In the mean time, I have taken the box offline and am running memtest.
> >Up to now, everything seems to be fine.
> >
> >Any hints will be appreciated.
>
> You might try setting up netconsole to get reliable logging.

logging of what? Of things written to syslog before the freeze occurs
so that they don't reach the disk reliably? I could set up logging
(which facility/priority?) to the serial console.

> Do you have NMIs? 'grep NMI /proc/interrupts'.

about one per minute.

> Does running 'perf top -F 10000' make the hang come sooner?

If that's important, I'll make some effort to compile a statically
linked perf for 2.6.39. Is it?

Greetings
Marc

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