Re: A non-responsive guest problem

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Hi,

>From trace messages, it seemed no interrupts for guest.
I also tried sysrq, but it didn't work. I doubt that kvm-qemu entered
some infinite loop.

Thanks,
Paul

On Mon, Aug 22, 2011 at 8:10 PM, Stefan Hajnoczi <stefanha@xxxxxxxxx> wrote:
> On Mon, Aug 22, 2011 at 10:37 AM, Paul <flypen@xxxxxxxxx> wrote:
>> Hi,
>> I found the clock of guest OS has been changed. For example, today was Aug
>> 22, but I found the time of guest was Mar 22 from the VNC desktop. The clock
>> source of guest was kvm-clock. Was it related to KVM clock bug? How about it
>> if I changed the clock to tsc?
>
> If the guest is using 100% CPU but the kernel is still responsive at
> some level you can use SysRq to gather information:
> http://en.wikipedia.org/wiki/Magic_SysRq_key
>
> Especially Alt+SysRQ+t is interesting because it prints the current
> tasks to the console.
>
> If you are able to get interactive access again then top(1) would be
> interesting.
>
> Stefan
>
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