how to measure CPU load

[Aswin]

Hi,

Does anyone know of a way to measure the CPU load of the NXT when running a program?
I want to add functionality to my program. But before I start I would like to know how much resources the NXT still has available.

Aswin

[gloomyandy]

Not very easy to do. Best I can come up with is to create a very low priority thread that counts in a loop. Zero the counter from time to time and see how many counts you get per second. Problem is if you have any busy wait loops in your (or in other code) it won't run at all (leJOS is totally priority driven for threading). If that does not work you could try doing the same but with the thread at normal priority and perhaps with a sleep in it... Compare the results you get with what happens with no other threads running, may give you some sort of feel for how busy things are...

[skoehler]

(leJOS is totally priority driven for threading)

which means that a thread of priority x is only scheduled if no threads of a priority larger than x is ready to be execute