Ubuntu 11.10: Xen vs. KVM vs. VirtualBox

While last week I showed how Ubuntu's
performance has evolved as a KVM guest from Ubuntu 8.04 through Ubuntu 11.10,
in today's article is a Linux virtualization showdown between VirtualBox, Xen,
and KVM while using Ubuntu 11.10 on the Linux 3.0 kernel.
This Linux virtualization comparison is being done using a ZaReason
notebook with an Intel Core i7 2630QM (Sandy Bridge) quad-core process

via phoronix.com