in the last 2 days, suddenly the server is very slow. we are running magento, and we have seen 40-50 php-fpm process being run, each taking a few % of cpu, making performance very slow. we have 2 servers, each 4 GB ram, for web and db.
using apc already, with 100% hit rate. php memory limit 256M
php-fpm using max_children = 100, and max_requests = 1,000
can anyone please help explain why suddenly magento have 40-50 php process running? (basically once we restart nginx and php-fpm, the no. of php-fpm process just jumps to 40-50)
please help. thx a lot.