Kill process with high CPU usage after X time?

touser · 12-27-2009, 03:25 AM

Hello everyone, running debian i have a few processes which tend to crash occasionally (game servers), which end up using 100% cpu. I'm looking for a program or script to check the cpu usage of a list of processes by name and if they are at 100% for more than X time, say 30 seconds, kill them. I tried ps-watcher but wasn't able to determine how to accomplish this. Just killing the process at 100% usage wont work as it will hit that for brief periods during normal operation. I've also found this script which seems to do what i want, however it is limited to one process: http://pastebin.com/m1c814cb4 Any help is greatly appreciated!

markush · 12-27-2009, 01:54 PM

Hello touser,

this looks like you have to combine the "top" utility with "ps". This is only an idea, but I'd recommend to read the manpage of top.

Markus

tanveer · 12-27-2009, 09:12 PM

you can take a look at monit. Hope that will server your purpose.

damgar · 12-27-2009, 09:22 PM

Monit is probably the way to go.

PHP Code:


			
MONIT(1)                         User Commands                        MONIT(1)



NAME

       monit - utility for monitoring services on a Unix system



SYNOPSIS

       monit [options] {arguments}



DESCRIPTION

       monit is a utility for managing and monitoring processes, files, direc&#8208;

       tories and devices on a Unix system. Monit conducts automatic mainte&#8208;

       nance and repair and can execute meaningful causal actions in error

       situations. E.g. monit can start a process if it does not run, restart

       a process if it does not respond and stop a process if it uses too much

       resources. You may use monit to monitor files, directories and devices

       for changes, such as timestamps changes, checksum changes or size

       changes.

touser · 12-27-2009, 09:52 PM

Thanks guy's ive been looking at monit and it seems it may do the job, the only downside i can see so far is its requirement of a pid file. Each game server will need to write to one and maintaining that file could become problematic over time as there's no way I'm going to create a pid file for each game server instance. I'll post back here if i find a working solution