Hi, In my Debian 8 "perfect server with ispconfig) I can see both xcache and opcache are running. I've read there are doing the same and having together could give errors: https://stackoverflow.com/questions/24354223/using-both-opcache-and-xcache If above is right: a) what's best solution, unistall xcache o disbale opcache? b) should "perfect server howto" avoid this? Regards