Ubuntu 12.04 KVM/Xen Virtualization: Intel vs. AMD
Written by Michael Larabel in Processors on 28 March 2012 at 08:51 AM EDT. Page 5 of 8. 15 Comments.
John The Ripper's Blowfish performance with KVM was close to bare metal and running at the same relative speed with Ubuntu 12.04 on the Intel and AMD processors.
MAFFT in a virtualized environment was running much slower, but was within a few percentage points between the latest-generation Intel and AMD processors.
Building out the Linux 3.1 kernel under KVM happened at 86% the speed of bare metal on the Intel Core i7 3960X configuration while with the AMD FX-8150 it happened at 93% the speed.
C-Ray on the Core i7 3960X was at 95% the native speed for Xen and KVM virtualization methods from the Precise Pangolin while with the FX-8150 with KVM it was at 99% the speed.