I have a VPS running CentOS with some PHP sites. It's been running fine for weeks.
Recently it has become slower and slower (both website usage and when logged in via SSH). I have determined that it consistently uses more and more memory until it maxes out, then I have to reboot it, the memory usage goes back down, but then constantly climbs again.
What could be causing this and how can I analyze/solve it?
here is my top: