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RE: [Xen-users] Xen & netperf

To: "Tommy Wang" <subscription@xxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] Xen & netperf
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Sat, 5 Sep 2009 11:17:25 +1000
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Thread-topic: [Xen-users] Xen & netperf
> Does this mean that despite any performance from running netperf from
> within a Xen virtual machine, that since my uplink to the Internet is
> only 100 Mbps it doesn't really matter (since, both Dom0 and DomU were
> pushing the 100 Mbps throughput)?  Are there any other benchmarks that
> I should run before making my decision?
> Hope someone can help me interpret these results!

I think that's a safe bet. There is additional cpu overhead which you
haven't measured, but you have already stated that your application is
not cpu bound. If the machine got really loaded up though you might see
a small increase in latency... maybe you should do some latency testing


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