Linux KVM vs. VirtualBox 4.0 Virtualization Benchmarks

KVM came back to running in front of VirtualBox when looking at how long it took to compile Apache with GCC 4.4.5 in the four different test configurations.

When running the Bullet Physics Engine in the virtualized Ubuntu Linux installations, KVM was again faster than VirtualBox 3.2/4.0.

Particularly with Bullet's Prim Trimesh workload, KVM did not suffer much performance wise compared to when the test was running on the actual hardware, but with VirtualBox, its performance was nearly halved.

With the Convex Trimesh workload from Bullet there was not as much of a performance hit with VirtualBox, but it was still big with it being a 20% difference.