Have a couple more minutes right now, looking more.
Could start up a couple of listen sockets on that same port in different processes for faster accepting, in ‘some’ cases it helps.
Also I see you are using :gen_tcp.send here as well, this is also synchronous for a response from a successful send from the OS and can slow you down a good bit if you are using keepalive to handle many requests on a single socket, it can be easiest just to slave it out to another process and then immediately receive for the next packet. However as a single connection on HTTP1 is serialized anyway, it’s not a big deal, just inet setopt to do active: :once again then call send in that order and you’ll have a packet waiting in your mailbox about the time it returns.
There are lots of other things that can be done, but at the very least I’d use accept: :once or accept: true depending. For this specific case (although someone could massively slow down the server in that case by sending tons of packets) active: true would probably be fastest, but active: :once is both quite fast (much more so then recv/2 and safe.
