[sergiolp]

On the linpack test, the KVM domain should have been configured for inheriting the CPU extensions from the host (or, alternatively, cherry picking the extensions relevant for such test).

For the rest, I think an updated KVM vs. Xen vs. VMWare comparison would have been way more interesting. If you don't need to run other OSes, process tagging (jails/zones/containers/whateveritscalledonyouros) will always give you better performance.

[wcchandler]

I would love to also see a comparison of hypervisors. Unfortunately, it violates practically everyone's EULA. I can understand why, there's so many different ways things can be implemented and it's almost never a 1:1 identical setup. That being said, I can only rely on anecdotal evidence accompanied with confirmation bias when determining which virtual environment is best.