[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Re: Poor performance on HVM (kernbench)
Todd Deshane wrote: Xen 3.3 should be an improvement with shadow3 right? As other people already said, shadow3 (especially the current unsync policy) was mostly developed with Windows performance in mind. I would be surprised if the shadow algorithm is causing such a performance loss though; but in any case, you can disable the out-of-sync feature by removing SHOPT_OUT_OF_SYNC from SHADOW_OPTIMIZATIONS in xen/arch/x86/mm/shadows/private.h (setting it to 0xff instead of 0x1ff), reverting the shadow code back to shadow 2 again. Can you please test that and see if it makes any difference? Thanks, Gianluca Should I need to adjust the shadow_memory parameter for the guest? I'm going to try Xen 3.2.1 from source next. Todd _______________________________________________ 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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