Re: Calculating processor usage (M68K)

"test" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Could someone tell me know how to calculate MIPS being used by an
> existing application, on an existing processor?
>
> I'm not looking for raw processor power available (so benchmark pgms
> won't do). We have an application (real-time, infinte loop) running on
> the processor, and want to know how busy the processor is on an
> average. It would suffice even if we could only determine the
> worst-case utilization. The application runs on pSOS on M68K.
>
> Thanks,
> Test

How about a 'working' flag and two counters?
- When in the idle loop, set the flag to 'idle'
- When entering any activity, set the flag to 'at work'
- Use a timer interrupt at some arbitrary interval.
- In the ISR do something like:
void TimerIsr(void)
{
    if(working) atwork++;
    else idling++;
}

This should give you a reasonable indication what percentage of time is
spent.

Rob