Php-fpm does not listen on ports
I had the same problem and could not find any solution for it.so I wrote some code to solve this problema vb code with socket programming that connecting to port 9000 in a timer then check socket state and error handle.If state not sckConnected or error rais that connection refused then endtask the php-cgi.exe or php-fpm then re-execute them.
Although this is not the best way it solves this problem!