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Re: [Xen-devel] Live migration fails under heavy network use
| To: | John Levon <levon@xxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Live migration fails under heavy network use |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Thu, 22 Feb 2007 20:55:39 +0000 |
| Cc: | Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Thu, 22 Feb 2007 12:54:49 -0800 |
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| Thread-topic: | [Xen-devel] Live migration fails under heavy network use |
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On 22/2/07 19:55, "John Levon" <levon@xxxxxxxxxxxxxxxxx> wrote: > I also see a fair amount of: > > Dom48 freeing in-use page 2991 (pseudophys 100a4): count=2 type=e8000000 > > Ian mentioned that these could be harmless. Is this because dom0 has > mapped the page for suspending? And if so, why is the count two not one? Yes, it's because of the extra dom0 mapping. The count is 2 because one reference is held at this point by the freeing function in Xen. The comment above that warning in the Xen source is a bit strong. I don't think we can change the semantics of the existing command but we may add a new one to let the caller know whether the page(s) could immediately be freed. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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