Why does the number of open files matter? The sockets are non-blocking, we use 64 acceptors, so there must be only 1 open file
2011/12/5 Emmanuel Lecharny <elecha...@gmail.com>: > On 12/5/11 2:53 PM, Antonio Rodriges wrote: >> >> Hello, >> >> We are testing our distributed app on Mina by ruinning 512 threads per >> machine simulating concurrent access by many users. >> At sturtup, Mina opens only 808 sessions while we have 2048 threads in >> total. >> >> When a thread is unable to open a session it waits. When others finish >> it is able to open a session. >> >> I wonder how to raise this limit and why is it 808? > > Hmmm... Don't you have any exception on the server, like you can't any more > open files ? > > Here, a bit more of relevant informations could help : > - MINA version > - OS used > - if it's a linux based OS, the ulimit set for the user you are running your > server under (should be something like 1024 as a default value, and then 808 > could be the max number of files you can open, assuming that the other > processes are already handling around 216 files). > > Keep in mind that on linux, one socket = one opened file. > > You can do a netstat -a|wc -l to know how many opened files you have. > > Hope it helps. > > > -- > Regards, > Cordialement, > Emmanuel Lécharny > www.iktek.com > -- Kind regards, Antonio Rodriges
