FPM is a FastCGI server. That is, it does socket-based IPC (TCP or unix), with a binary protocol (FastCGI), with one process per request. Litespeed seems very

FPM is a FastCGI server. That is, it does socket-based IPC (TCP or unix), with a binary protocol (FastCGI), with one process per request. Litespeed seems very close to that: socket based IPC, with a seemingly custom binary protocol, one process per request. Could you tell what's better in Litespeed module ?