I'm using a Amazon EC2 m3.medium ( more than enough resources to host a ragnarok server ) My cpu usage never goes more than 10%, however some times it sudenly jumps to 100%, and then my char-server can't save anything in the database, and nobody can log in. I've already opened a ticket on amazon support, but, maybe this can be a rAthena problem, so i'm posting here too. Did anybody have this problem too? Or i'm a first? haha If you have any ideas how to solve this, it will be much apreciated.
Oh, by the way, with 100% cpu usage, players still connected to map-server can play as if nothing happenned, players offline can't login, and nothing is saved on database. I can still log in on the cloud, open phpmyadmin and stuff If I restart the server, everything goes back to normal, so I guess that maybe there is really an issue. Oh, and i'm not complete sure that 100% cpu usage is the cause to char-server down, maybe it's the other way around. This is my normal usage: http://puu.sh/a2mwt/4a1fcbb636.png When it happens again, I will take a print of what is using 100%.