Re: [Xen-users] One or two vcpu?

[Peter Privat <peter.privat@xxxxxxxxxxxx>]

On Fri, 2010-03-26 at 12:24 +0000, Rob MacGregor wrote:

> > Hi,
> >
> > Does it make any difference to the performance for the domU when vcpu is
> > increased to use 2 cpu:s?
>
> That rather depends on what you're doing with that domU.
Sure! But I wondered if they had any real effect or were just there for satisfying software or OS:es that may require more than 1 core or whatever. Will the adding of one more virtual CPU (vcpu) have the same performance effect as like adding one more physical core to a physical hardware? (upgrading a real MB with 1 core cpu to a 2 core cpu).


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