CPU load monitoring

Igrushkin · 06-03-2009, 03:30 AM

Hi all!

I have a couple of applications running with highest priority on my embedded linux board. I want to monitor their CPU load in real time and decrease the application priority using setpriority() function when it exceeds some theshold. I can use getloadavg() but I want to monitor CPU load by the particular application (something like in "top") but not the entire CPU load.

Is it possible? Thank you in advance!

minimol · 06-03-2009, 04:41 AM

try reading /proc/<pid>/stat for the details you are looking for. ( see manpage of proc ).

syg00 · 06-03-2009, 06:17 AM

That's where the data comes from, but you'll need to do your own maths - that's what makes top so handy.
You'll probably also need /proc/stat to work out percentages.