An Introduction to Full Virtualization With Xen (Linux.com)
Posted Oct 24, 2012 9:59 UTC (Wed) by Lennie (subscriber, #49641)
[Link]
I know Phoronix might not be all that populair with the development community, but their results showed something like that too.
Judging by some of the other things I've seen online, KVM has gotten better and Xen and KVM seem to be getting closer in performance and I think I've even seen them supporting paravirtualisation APIs from each other.