I was interested in seeing how much slower it is to run a program inside VirtualBox than it is under native Linux. I first compiled Marsyas using the default options in Ubuntu 9.04:
make -j3 182.58s user 17.35s system 188% cpu 1:46.15 total
And then compiled it in VirtualBox on a Windows 7 host and Ubuntu 9.04 guest:
make -j3 379.36s user 266.08s system 96% cpu 11:09.95 total
