I'm thinking about doing a global restart on my server and with it I am planning to reinstall my machine. Currently I am running Centos 6.5 and have some performance issues. My main box has an E3-1225v2 CPU and it looks like Minecraft server is better running on my second box with an i5-2400 (I got higher TPS with the same configurations). I have setup software raid on my E3 box, can this impact the server performance on a bad way? So is there any performance improvements with Centos 7? (tho I don't expect any) Is there a big difference in performance between MariaDB and MySQL? Many thanks!