If you want great performance, consider writing an Nginx module in C. It's reasonably easy to get started!
I'm really not that demanding when it comes to the performance of a server side language. PHP + APC has been proven to be almost as fast as C++ (well, Facebook's Hip Hop, which is written in C++), and I'd argue that the biggest bottle necks in a web app are always the network latency and the database, so that's where I spend most of my performance tuning.