25 ms·

I'm sure that your ruby can hold +100k connctions with enough RAM.

• WJW 8y ago
  I ran 4 `ab` processes against it, each with 20k concurrent connections, so the maximum amount of connections "should" have been 80k. The fact that the actual number was so close to 65536 makes me very suspicious that there is some kernel level thing at play here. I agree that the ruby program can probably scale up much more with enough RAM.
  • john37386 8y ago
    Was iptables running? Maybe they hit a conntrack limit
  • tyingq 8y ago
    What does ulimit -a say?
  • andrewmackrodt 8y ago
    Would this have been affected by the number of available ports on your single loopback address, assuming 127.0.0.1. You'd have to connect via multiple network devices. Edit: comment below clarifies servers.