Re: [Xen-users] Desynchronize clock

["Nicholas Lee" <emptysands@xxxxxxxxx>]

On 3/8/07, Ulrich Windl <ulrich.windl@xxxxxxxxxxxxxxxxxxxx> wrote:

I know it does not help you, but in VMware I see exactly the same: When starting a
VM, the time displayed is correct, but when you don't have "VMware tools set up
for time sync", the clock is back half an hour or so within a few hours.

A have a historical problem with clocks displaying the wrong time ;-)

There is a good discussion of this here:
http://rextang.net/blogs/work/archive/2006/12/21/4516.aspx
and
http://kb.vmware.com/KanisaPlatform/Publishing/329/1420_f.SAL_Public.html

I'm not sure that Xen/HVM uses the similar method as vmware for time sync but I think one of the keys in increasing HZ.  I'm not sure how at all HVM would work with clocks and windows. Maybe the PV drives have this functionality like vmware-tools.

Nicholas

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