🚀 go-pugleaf

Bob Gonder wrote:
> Alberto wrote:
> 
>> More specifically, I do a digital filtering of audio signals using a FIR 
>> filter with a variable
>> number of taps. What I would like to do is to change dynamically the 
>> number of taps
>> in function of the current CPU load, accepting the worsening of the 
>> filter performance
>> in exchange for a reduced consumption of CPU time, if need be.
> 
> What you are asking doesn't really make sense.
> If there is nothing else running, then you will get 100% of the CPU.
> OTOH if your programm is running twice, you will get 50%.

It makes a perfect sense. The program is driven by external interrupts.
At each interrupt some processing must be done, and of course it must be
terminated before the next interrupt arrives. So I can have the CPU idle
waiting for the next interrupt. And there can be other tasks besides my
program running on the PC.

So what I need to know is how much headroom I have, so to adjust the
complexity of the processing in order to be sure to finish it before
the next interrupt occurs. And that headroom is constantly changing in
function, as said, of the other tasks being serviced by the CPU.

Thanks
Alberto di Bene