Re: [Xen-users] Xen time drift issues

[Peter Booth <peter_booth@xxxxxx>]

How are you measuring this drift?

Sent from my iPhone

On Jul 8, 2009, at 7:59 AM, Tanuj Bansal <bansal.tanuj83@xxxxxxxxx>  
wrote:
> Hi Priya:
>
> If you are using NTP, then shutdown the NTP service on all DomU and  
> restart
> it on Dom0 only.
>
>
>
> Regards,
>
> Tanuj Bansal
>
> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Priya
> Sent: Wednesday, July 01, 2009 8:55 PM
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] Xen time drift issues
>
> Hello everyone!
>
> I been observing some peculiar time drift on my Xen domains (dom0 and
> domUs).  The time (as returned by timeofday) on my domains drifts at
> an almost steady rate from the real time ( as read from the time stamp
> counter ).
>
> The drift is so constant that it makes me think there should be some
> simple explanation for it in the way Xen keeps time.
>
> Some info about my set up:
> guest OS: ubuntu
> independent_wallclock is set to default 0 on all domains
> no NTP synchronization
>
> The drift is around 50 microseconds / second on all the domains. Has
> anyone else observed this? If anyone can point me to some
> documentation that explains this behavior, that would be great!
>
> Good day!
>
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