setting max active connection

mex nginx-forum at
Thu Jul 18 11:15:43 UTC 2013

you config is somewhat messed_up, but it think this is not an issue here.

are you sure your fastcgi_process is able to deliver more than 520 parallel
connections? -> to be defined in
event {}

max clients = worker_processes * worker_connections 

In a reverse proxy situation, max clients becomes 

max clients = worker_processes * worker_connections/4

Posted at Nginx Forum:,240989,240991#msg-240991

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