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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-ia64-devel] Time for hybrid virtualization?
Quoting Kayvan Sylvan <kayvan@xxxxxxxxx>: > For the Montecito chip, running the RE-AIM7 compute workload, we have the > following preliminary summary: > > Native vs. Xen performace > ---------------------------------- > At 2-CPU, the overhead was 13%. > At 4-CPU, the overhead was 17% > At 8-cpu, overhead was 28% > At 16-cpu, the overhead was 173% > > Not quite sure why the performance dropped off so radically in the 16-CPU > case. Can you tell us a little bit more about your machine? Is it 16 logical cpus (hyperthread) or 16 cores ? Are all the cpus on the same bus or is it a NUMA machine ? That could explain the drop off. _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-ia64-devel
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