and that's why the whole test makes no sense. Virtualization is known to work badly with "virtual" "emulated" CPUs. So, next time I'd like to see something a bit more realistic, like HT support disabled in BIOS, host and guest limited to say 4 CPUs (host via kernel parameters).we allowed the guests access to all 12 processor threads
What this test has shown is that no virtualization technology (amongst tested) scales well with the sheer number of emulated CPUs.
Besides it's kinda sad you haven't included VMWare WorkStation/Player 7.1.3.