I experienced lot of 503 errors during peak hours. And i still have lot of free RAM. I increased PHP suEXEC Max Conn from 25 to 80 and 503 errors was reduced 98%, and server becomes fast. However i have some questions. What is the consequences of increasing PHP suEXEC Max Conn, if any? For example requiring more RAM etc? What other config should i edit after increasing PHP suEXEC Max Conn, if any? Thank you.