RE: [Xen-users] Xen Performance

[Joe Armstrong <jarmstrong@xxxxxxxxxxxx>]

> It shows that for some types of Disk IO, like sequential delete and
> random create Xen performs faster than native linux. A full comparison
> chart is attached as a pdf.
> The test are run first from native linux than both from Dom0 and a DomU
> with the same results.
> 
Hi Amir,

Not an authoritative answer here... but I've see similar results just running 
"hdparm" to see IO rates.
I've also seen in the past some amount of clock skew between host & guest OS so 
it could be that the (possible) clock skew is causing your benchmark to show 
higher than possible results... if your guest OS clock is even a little slow it 
will effect results especially in short-term tests.

Joe

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