On Mon, Jul 6, 2009 at 10:22 AM, Sagi Basharisagi@boom.org.il wrote:
On my new box where I currently encounter the problem I tried installing the regular 2.6.18-92.1.22 kernel with the "divider=10 clocksource=acpi_pm" parameters like you suggested, and also the old kernel-vm package, and in both of these attempts idle host CPU usage was at 50%. So it looks like although the symptoms are the same the cause is different.
I guess it may be related to the newer version of VirtualHost, the different hardware or the different operating system. Any idea what else I can try to reduce the CPU usage on this host?
Because the issue is most likely related to VirtualBox and Windows rather than CentOS, you may have a better chance of getting help by going to the VB channels:
http://www.virtualbox.org/wiki/Community
Akemi