Phoronix: Facebook's HipHop 2.0 Virtual Machine Is Very Fast

Released last month by Facebook was their open-source HipHOp "HHVM" 2.0 virtual machine. Benchmarks of HHVM at Phoronix show that the code does live up to Facebook's performance claims...

http://www.phoronix.com/vr.php?view=MTM0Njc