Provide a mechinism to set a guest OS's process priority to idle
I work on the BOINC project (http://boinc.berkeley.edu). We have begun working on our client-side and server-side code to integrate using VirtualBox to execute CPU bound applications within a Linux guest VM.
BOINC's overall approach to running applications is to run them as the idle process priority class of the host operating system.
Our testers have reported that they have noticed that VM's start with the normal priority class thereby the system sometimes gets a little sluggish when responding to user input.
We would like a way to start a VM guest so that it is running in the hosts idle process priority class.