title: Better performance from windows virtualboxes on ubuntu or from ubuntu virtualboxes on windows
body: <p>I am planning to develop an automated test solution with multiple windows machines and multiple ubuntu machines that perform related/interdependent tasks.  To start the project, I'd like to have one or two windows machines (virtual) and a few ubuntu machines (virtual) running on a single desktop.  It seems likely that I will be pushing a single desktop to the limit here so I am trying to guess if I will have better luck if my host OS is ubuntu or if it is Windows 7.  I would be able to use the host OS as one of the machines in my environment. The desktop is some sort of above average Dell, but nothing really impressive.</p>
  
  <p>Does anyone have any insight here?  I've worked mostly with VMWare in the past and my host was windows along with my VMs.</p>