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[Xen-users] Timeslips in HVM guest

from [Tammo Schuelke]

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Subject:	[Xen-users] Timeslips in HVM guest
From:	Tammo Schuelke <tas@xxxxxxxxxx>
Date:	Mon, 19 Jan 2009 18:15:44 +0100
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Hi,

I run Debian in a local HVM without any problems.

Now I tried to setup another Debian HVM on a remote server (almost the same hardware and BIOS settings) and I'm getting some weird time problems:

web:~# date

Mo 19. Jan 17:22:05 CET 2009

web:~# date

Mo 19. Jan 17:22:05 CET 2009

web:~# date

Mo 19. Jan 17:22:05 CET 2009

web:~# date

Mo 19. Jan 18:35:24 CET 2009

web:~# date

Mo 19. Jan 17:22:06 CET 2009

web:~# date

Mo 19. Jan 17:22:06 CET 2009

It's always these ~73 minutes off for a moment and then goes back. There is no ntp running in the HVM instance and the host and hardware clock are set to the correct time and don't show this behaviour. I'm using Xen Hypervisor 3.2-1 from Debian etch backports and a matching 2.6.18-6 kernel.

Any ideas what may cause this? The system seems to run stable but this unpredictably breaks some things like sessions of course.

Regards,

Tammo

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