[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] VTx enabled + xen 3.0 stable IO performance...
Hi, This question is very interesting indeed and bothered also me . I googled for official benchmarks from Intel/AMD for performance of Xen running on VT-x or AMD and could not find any. Had you looked at the following thread in xen-devel: HVM network performance: http://lists.xensource.com/archives/html/xen-devel/2006-05/msg00183.html Though it speaks about network performance (and not disk I/O) I think it may be relevant. You said: Xen document says that the performance should >be close-to-native. As I understand this refers to non-VT processors. It seems to me that using QEMU in HVM may cause slower performance than on non-VT processors. (In non-VT processors Xen does not use QEMU but uses backend-frontend virtual device drivers, which seems more efficient). Can anybody give I/O performance results on AMD SVM processors (these processors have virtualization extensions).? Regards, Rami Rosen On 6/7/06, M S, Rajanish <MS.Rajanish@xxxxxx> wrote: Hi, Is there any IO performance results for Xen3.0.2 stable + VT enabled full virtualization? Our tests shows 100,000 IOPs on Native linux(2.6.16) vs 75000 IOPs on domain 0 for the same kernel version for 512B IO size. Is this expected behavior? Xen document says that the performance should be close-to-native. Also, it will be helpful if you could point us to any performance results of Xen 3.0. Thanks. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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