I recently installed KVM on my workstation (Ubuntu 9.04 64 Bit with Intel Core2 Quad).
I set up an virtual machine with 4 CPUs (same as the host) with CentOS 5.2 as guest operating system.
When I start several programs to get the cpu usage up, top (in the vm) tells me that all 4 cpus are 90% to 100% in use, but on the host only one cpu is in use the other 3 have about 90% idle.
Furthermore the vm-process has never over 100% cpu usage.
I migrated the vm with qemu-img and easily get 180% cpu usage using vmware.
I made sure that the virtualisation technologie is activated in the BIOS (vmware complained) but that didn't change anything.
I did an internet search but couldn't find anybody with a similar problem let alone a solution.
Does anybody of you know this problem? Help would be very much appreciated.