Re: CPU problems only after hours

Hi Jakob,

from Antoine's and IOhannes' replies and your own comments it *looks* as
if your problems are not related to audio processing. You could try
disabling the label modification Antoine pointed out in the patch rather
than trying -nogui, which would nevertheless create the symbols as
pointed out by IOhannes. That is all that I can contribute at the
current point I am afraid...

good luck!
P

* Jakobweb via Pd-list <[email protected]> [2026-04-15 10:17]:
> Dear Peter, thank you for your hint.
> 
> I did some tests:
> - I disconnected the Teensys and played the instrument by myself, stress-testing it by playing many notes on all four sets. The problem persists and seems to appear already after a few minutes.
> 
> - I re-connected the Teensys, re-started the patch, then after a few seconds disabled Audio-computing by unclicking the checkbox in the console. And then I‘ve let the sensors play the instrument over night. Just with no audio computing.
> 
> The pd-pid in the top command was showing around 7 % after starting the patch, same value for the cpu-meter in Pd. 
> 
> After the night, the problem came back! I couldnt hear it, because I had audio still turned off, but I could see it in the lagging of colors that are changing according to the sequencer and some some other gui elements.
> 
> pd-pid in top command shows 98%, the cpu-loadmeter shows 468% !
> 
> This is interesting because it shows that the problem does not lie in the audio-computation. 
> 
> Can you confirm?
> 
> Best, Jakob
> 
> > Am 14.04.2026 um 13:09 schrieb Peter P. <[email protected]>:
> > 
> > Jakob,
> > 
> > * Jakobweb via Pd-list <[email protected]> [2026-04-14 12:59]:
> > [...]
> >> When I let the sensors and instrument do their thing, everything is fine. CPU load is at about 30-50 % according to Pd‘s load meter. But after 2-3 hours or so, I hear crackles in the audio, the cpu load goes up to over 100 %. The audio is not fluent anymore, it‘s lagging.
> > Provided you have narrowed to CPU consumption down to Pd's two software
> > components using the top unix command or your OSes cpu meter, you could
> > try running the patch with -noaudio or DSP turned off and see
> > if the CPU consumption is in the audio part of your patch.
> > 
> > Alterantively see if the problem persists without your
> > single-board-computer sending data.
> > 
> > best, P
> > 
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