Hi Merton,
> I have about 800 mb memory left when all services are running (with > minimal traffic and load). The per-connection memory usage of my > backend is about 25 kb. > [...] > But I do want to serve optimally (or get the best performance) for > any number <= 2000 connections. Well you should be able to serve 2000 connections easily with 800MB RAM. I would set the backend maxconn to 2000 and remain a little higher for the global maxconn settings. You may wanna review the various timeouts if those sessions are that long-lived and make sure you enabled keepalive. Other than that, you should be fine. Regards, Lukas
