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From: Stefan Hajnoczi <stefanha@gmail.com>
To: Paul <flypen@gmail.com>
Cc: kvm@vger.kernel.org
Subject: Re: A non-responsive guest problem
Date: Mon, 22 Aug 2011 13:10:05 +0100	[thread overview]
Message-ID: <CAJSP0QVcu1cUpeAQ8Jq2nwUUgsKvC2gKm0Wm7Oisj2TyY+v7Pg@mail.gmail.com> (raw)
In-Reply-To: <CAFTsVLQ4g5fyMke55oVwLeMBX-hX+H0PxsM+Q_MJzFKPJabHKg@mail.gmail.com>

On Mon, Aug 22, 2011 at 10:37 AM, Paul <flypen@gmail.com> 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

  parent reply	other threads:[~2011-08-22 12:10 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-18  7:42 A non-responsive guest problem Paul
2011-08-19  4:56 ` Paul
2011-08-19 13:18 ` Stefan Hajnoczi
2011-08-22  9:46   ` Paul
     [not found]   ` <CAFTsVLQ4g5fyMke55oVwLeMBX-hX+H0PxsM+Q_MJzFKPJabHKg@mail.gmail.com>
2011-08-22 12:10     ` Stefan Hajnoczi [this message]
2011-08-23  8:10       ` Paul
2011-08-23 10:09         ` Stefan Hajnoczi
2011-08-24  8:40           ` Paul
2011-08-24  9:02             ` Xiao Guangrong
2011-08-24 10:24               ` Stefan Hajnoczi
2011-08-24 12:47                 ` Paul
2011-08-30  3:20                   ` Paul

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