Guest gets only about 23% of the complete cpu time

[Cottonwood]

Sometimes it is helpful to be able to work with a running client in the background. But sometimes I have to wait for the result of the client. In this case I'd like to give 100% of the available cpu time to it. But how can I do that?

In my case it is a Linux client. Itselves shows 100% cpu usage. So it should be a host related problem.

Thanks in advance.
C.

[Sasquatch]

If the Guest uses around 23% CPU on the Host, then it means you have a quad core CPU and the VM is using only one core of it. If you want more performance, you have to enable SMP and give it more than one CPU core. See the VirtualBox FAQ and VB changelog (version 3.0.0) for what hardware and settings you need.