Re: [Jack-Devel] CPU load with top is inconsistent

On Tue, May 20, 2014 at 02:07:30PM +0200, Joakim Hernberg wrote:

> > I've been trying to track down how the CPU usage is affected by Jack 
> > under different conditions of sample rate and period size. Of course
> > I am aware low-level stuff such as how ALSA handles the hardware and
> > how it transfers the data is relevant, and it may also show higher 
> > performance with some specific combinations of sample rate and sample
> > size.
> 
> I don't know how meaningful cpu load is in a low latency environment as
> that needed by jack..  Imo the execution latency (delay is far more
> important). There is an utility called cyclictest in the package

Either that, or the built-in graph/statistics from jackd2. You can see
client invocation/execution time, audio process cycle time and so on.


Leonardo, check out this paper:

   http://lac.zkm.de/2005/papers/letz_et_al.pdf


Cheers

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