It has been a while since the Socket Benchmark of Asynchronous server. That benchmark looked specifically at the raw socket performance of various frameworks, which was being benchmarked by doing a regular HTTP request against the TCP server. The server itself was dumb and did not actually understand the headers being send to [...]

There has already been written a lot on the C10K problem and it is known that the only viable option to handle LOTS of concurrent connections is to handle them asynchronously. This also shows that for massively concurrent problems, such as lots of parallel comet connections, the GIL in Python is a non-issue as we [...]