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xen-devel
Re: [Xen-devel] Re: [PATCH 0 of 12] PV on HVM Xen
On Mon, 24 May 2010, Pasi Kärkkäinen wrote:
> Hmm.. are you sure kernbench is a proper benchmark for disk IO?
> kernel compilations fire up a lot of new processes, and that favours HVM
> guests.
>
> Basicly it seems really weird to me that in the results HVM (without PV
> drivers)
> is faster than pure PV..
>
> If you compare pure disk-IO PV vs. HVM the difference is usually big..
> PV beating HVM hands down.
>
32 bit PV certainly would, even on a kernbench, but keep in mind that 64
bit PV is not as fast.
In any case, like Jeremy previously said, it all depends on the
workload...
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