I suggest running some tests with tcpbench, after the change to poll I was able to see around 600 connections with a decent throughput.
- 300 simultaneous TCP connections possible with... chefren
- Re: 300 simultaneous TCP connections poss... Ted Unangst
- Re: 300 simultaneous TCP connections ... Claudio Jeker
- Re: 300 simultaneous TCP connections poss... Christiano Farina Haesbaert