linux-kernel - Re: Clock jumps

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Date:	Tue, 25 May 2010 09:21:00 +0300
From:	Gleb Natapov <gleb@...hat.com>
To:	Orion Poplawski <orion@...a.nwra.com>
Cc:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: Clock jumps

Adding kvm to CC.

On Mon, May 24, 2010 at 04:06:32PM +0000, Orion Poplawski wrote:
> I have a KVM virtual machine running 2.6.33.4-95.fc13.x86_64 on a CentOS 5.5
> host whose clock jumps about 8-12 hours a couple times a day.  I have no idea
> what is causing it.  Fedora 12 and Centos 5.5 KVM machines run fine on the same
> host.  Is there any debugging I can enable to see what is jumping the clock?
> 
> kvm-clock: cpu 0, msr 0:1ba4741, boot clock
> kvm-clock: cpu 0, msr 0:1e15741, primary cpu clock
> Switching to clocksource kvm-clock
> rtc_cmos 00:01: setting system clock to 2010-05-20 16:59:48 UTC (1274374788)
> 
> Thanks,
> 
>  Orion
> 
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--
			Gleb.
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