thank you for such detailed response. I feel, finally I've succeed to express my original question correctly.
So if I go one step forward, and lets assume that indeed there is such limit of concurrent connections, THAN: should it be resolved by another architecture or another usage type of Twisted technology or something else? Quoting "Reza Lotun" <rlo...@gmail.com>: >> Once there is a Site that serving many clients and >> reactor.listenSSL(), for example, that actually serving many TCP >> connections and all these going through TwistedGateway, my logic, >> please correct me if I wrong, says at some point there will be a limit >> on concurrent TCP connections, so how is it solved with Twisted? > > That's a good question and I'm not sure if there's a definite answer > to this (as far as I know). I think it depends on your application - > for example, if your server is performing a big computation then on > average client connections will last longer, meaning you'll have more > concurrent connections. > > The best way to determine this is to *measure* it - for example, you > can do a load test with httperf and ramp up connections until this > start to break or become unresponsive. > > You can mitigate the situation by tuning your platform a bit (assuming > you're using linux) > - use the epoll reactor, which is high performance > - make sure the number of open file descriptors is set to something > high (and *not* 1024) - see `ulimit -a` > - make sure you tune your tcp settings - see /etc/sysctl.conf, namely > fs.file-max and various net.ipv4 settings (google is your friend on > the best settings, coupled with testing) > > Cheers, > Reza > > -- > Reza Lotun > mobile: +44 (0)7521 310 763 > email: rlo...@gmail.com > work: r...@tweetdeck.com > twitter: @rlotun > > _______________________________________________ > Twisted-Python mailing list > Twisted-Python@twistedmatrix.com > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > _______________________________________________ Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
