Brian,

On Monday 20 April 2009, Brian J. Murrell wrote:
> > When is one CPU pegged at 100%?
>
> Using top, I can only see the "%" of CPU being used as a total of both
> cores.  Virtualbox runs with ~100% (which correlates to a single core)
> all of the time, not just when running a disk benchmark.

this might be one of the problems. It could depend on the guest.
Note that the USB device emulation caused a notable CPU load with
older versions than VirtualBox 2.2.0. And the CPU load depends a
lot on the guest as well, there is still room for optimization.

Kind regards,

Frank
-- 
Dr.-Ing. Frank Mehnert    Sun Microsystems    http://www.sun.com/

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