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RE: [Xen-devel] Time stopped

To: "Steven Hand" <Steven.Hand@xxxxxxxxxxxx>, "David F Barrera" <dfbp@xxxxxxxxxx>
Subject: RE: [Xen-devel] Time stopped
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Fri, 14 Oct 2005 18:37:41 +0100
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stephan Böni <boeni@xxxxxx>
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Thread-index: AcXQ3uk2hX6bUWdMSsST7tsiDECuHQABmFog
Thread-topic: [Xen-devel] Time stopped
> So managed to reproduce (once!) and now perhaps one step 
> further to solving it - basically the guest is /not/ to 
> blame; Xen itself is not updating time correctly. In my 
> instance it was out (i.e. time was running slower) by a 
> factor of approximately 16 -- 20. 
> 
> I'm trying to reproduce again to get more details - but it'd 
> be helpful if folks could apply the below and, if they repro the
> problem: 
> 
>   (1) get serial console to Xen (i.e. hit 'Ctrl-A' three times)
>   (2) hit 'a' to dump the ac_timer queues and the scale info,
>   (3) post the results to the list 

OK, this issue is now understood, and there's a fix undergoing testing in the 
staging queue. No need to collect the above data -- just wait for the changeset 
to make it out or try the attached patch.

Ian



Attachment: pit-fix.patch
Description: pit-fix.patch

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