Limit CPU by user, site or process
I have a Linux server with over 500 Internet sites.
It is very stable but some users are running extremely CPU intensive CGI and PHP scripts that take out 90%+ of the CPU which really slows the server down, especially when multiple processes are running.
Is there anything I can install or tweak that will allow me to restrict maximum CPU usage by user, site or process?
Thanks very much and regards.