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Re: [Xen-devel] Possible Bug in CPU detection / clock skew?
| To: | Alexander Wilms <alex.wilms@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Possible Bug in CPU detection / clock skew? |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Thu, 04 Jan 2007 10:10:24 +0000 |
| Delivery-date: | Thu, 04 Jan 2007 02:10:13 -0800 |
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| In-reply-to: | <200701031825.13777.alex.wilms@xxxxxxxxxxxxx> |
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| Thread-topic: | [Xen-devel] Possible Bug in CPU detection / clock skew? |
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On 3/1/07 17:25, "Alexander Wilms" <alex.wilms@xxxxxxxxxxxxx> wrote: > I have a very strange clock skew problem on my Server since running Xen 3.0.3 > that I have never seen before on the same machine running Xen 2.0.x. > > Now I compared boot messages from the old and new installation and I saw a > huge difference in the reported CPU speeds under 3.0.3 hypervisor. Could this > be a reason for the clock skew? Excuse me if the question is stupid, I'm not > a CPU expert... It does seem likely. The old messages were correct and the new ones are wrong, for some reason. I don;t think the calibration code has changed significantly but I'd have to check that. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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