Hi, I have Nginx + PHP FPM installed on my server. We are putting load on server for long period for 30 concurrent users. For initial user it works fine but after some time it starts throwing 502 bad gateway error. I have placed some of the log of nginx php-fpm and slow log of php-fpm. There are entries getting logged in slow log of php-fpm because of long running script and load on seby ehussain - Php-fpm Mailing List - English