[Xen-users] Xen timekeeping best practices

[Lloyd Dizon <thecarrionkind@xxxxxxxxx>]

Hi,
Just wondering what is the best practice for timekeeping in Xen, on HVMs and PVMs.

I found lots of information that DomUs should sync with it's Dom0.

However, there are also alot of posts for VMs timedrifting even if the Dom0 is properly synced.

So it in the end, it seems it is better to treat the VM as an independent timekeeper and sync it using NTP.

What are your thoughts? Is there an official answer out there? 
Should it be assumed that somehow a VM is improperly configured with regard to its Dom0 when it timedrifts?




http://support.ntp.org/bin/view/Support/KnownOsIssues#Section_9.2.2.2.
http://www.brookstevens.org/2010/06/xen-time-drift-and-ntp.html


regards,
Lloyd
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