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Re: [Xen-devel] common time reference between domU and dom0
- To: James Harper <james.harper@xxxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
- From: Keir Fraser <keir@xxxxxxx>
- Date: Fri, 10 Dec 2010 07:19:53 +0000
- Cc:
- Delivery-date: Thu, 09 Dec 2010 23:21:53 -0800
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- Thread-topic: [Xen-devel] common time reference between domU and dom0
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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