Re: Guest Hang Bugs

[Avi Kivity <avi@redhat.com>]

James Thomason wrote:
> Hello, 
>
> I am able to reliably reproduce a condition where a guest goes into a tight
> loop or spinlock on all running cores.  The scenario is exactly as described
> in bug 2351676, though my environment differs as detailed below.  My
> observation is that the issue is correlated to the number of VCPUs assigned
> to the guest and CPU load. The higher the number of VCPUs and CPU
> utilization, the more easily it is triggered.  If a KVM developer is
> interested in debugging live, I might be able to arrange getting the system
> in question into a DMZ.  A review of the kvm tracker leads me to believe
> that the following bugs are possibly related:
>
> [ 2351676 ] Guests hang periodically on Ubuntu-8.10
> [ 2353811 ] Solaris 10 guest unstable
>   
> [ 2494730 ] Guests "stalling" on kvm-82
> [ 2138079 ] kvm locks up system
> [ 2113643 ] guests AND host still getting stuck under CPU load
>
>   

Cam you try adding clocksource=acpi_pm to the _guest_ kernel command line?


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