Testing maximum client connections

[abachler]

I need to test the maximum theoretical and maximum feasable connections a server program can handle. Any suggestions on doing this?

[Perspective]

keep connecting clients until performance degrades below desired threshold (as defined by "feasible"), then keep adding clients until the server crashes (theoretical) ?

[abachler]

well, I suppose I will need a couple more systems then, otherwise client load will interfere with server load.

[manav]

also depends on what method is used for multiple client handling! a less efficient method will crash with small number of connections!

[abachler]

Yeah, well my code is usually pretty efficient. I'm aiming at a minimum of 1024 connections per server.

[manav]

What are you doing for multiple clients?

- thread spawning?
- OR thread pool?
- select ?

I also wonder what should we do, besides having powerful server, to handle millions of clients? :(

[abachler]

Generally large numbers of clients are handled by multiple servers. When a server reaches its limit for example, it can forward additional connections to a different server in the cluster or simply refuse the connection adn the lcient can pick the next server in a list.