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RE: [Xen-ia64-devel] domU faster than native? Not really....
| To: | "Magenheimer, Dan \(HP Labs Fort Collins\)" <dan.magenheimer@xxxxxx>, <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-ia64-devel] domU faster than native? Not really.... |
| From: | "Yang, Fred" <fred.yang@xxxxxxxxx> |
| Date: | Tue, 11 Apr 2006 13:16:28 -0700 |
| Delivery-date: | Tue, 11 Apr 2006 13:16:48 -0700 |
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| Thread-index: | AcZdhVXtalCVWiMVR2uyPA8mlyDF6AABLdxw |
| Thread-topic: | [Xen-ia64-devel] domU faster than native? Not really.... |
>Although this is an interesting data point, when testing >for domU performance degradation, we need to measure the >total work performed by the entire system, including >the hypervisor and dom0. Probably the best way to >do that is to always boot Xen with "nosmp" when running >domU performance regression testing. One observation. Itanium is usually built with MP especially for the platforms to run Xen/IPF in future. And Xen is not limited to run on a CPU in a MP environment. To match with actual model, you do want to specify the max CPU to match total CPU number of Dom0 and DomU, but not to limit Xen only run on a single CPU. -Fred _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-ia64-devel |
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