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[Xen-users] Why does DomU CPU usage increase during live migration?
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| Subject: | [Xen-users] Why does DomU CPU usage increase during live migration? |
| From: | S. Ercan Yüzbasioglu <ercan.yuzbasioglu@xxxxxxxxx> |
| Date: | Fri, 17 Apr 2009 12:09:47 +0200 |
| Delivery-date: | Fri, 17 Apr 2009 03:10:45 -0700 |
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Hi dear XENers, I did a quick experiment, and I observe that, during live-migration of a paravirtualized DomU from a Host to another (identical) one, DomU's CPU usage drastically increases: especially the user and sys values. I would expect that Dom0 should be the only domain whose CPU usage is supposed to increase. The migration process is supposed to be transparent to the DomU, right? So I cannot justify this behaviour. Does anybody have an idea about this? I ask this as a general discussion, cut I can provide specific information about my system if necessary. Hint: DomU boots using Dom0's kernel, I suspect this might be the reason, but why? Doesn't it has its own copy of kernel? Good day! Ercan _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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