Re: [Xen-devel] common time reference between domU and dom0

[Keir Fraser <keir@xxxxxxx>]

System time, as exposed to guests by Xen, should be good enough.

 -- Keir


On 10/12/2010 05:23, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote:

> I would like to be able to measure front/back ring message latency
> between a Windows DomU and Dom0. To do this I need a common time
> reference between the two, preferably with at least microsecond
> precision (latency <1us is irrelevant for my purposes). Does such a
> thing exist? A small amount of overhead in measuring this latency is
> acceptable.
> 
> Thanks
> 
> James
> 
> 
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