[PD] Troubleshooting help CPU Overload

Luigi Rensinghoff luigi.rensinghoff at freenet.de
Tue Jun 17 02:02:58 CEST 2008

Actually the problem disappeared...

Just in case it appears again i have some more questions...

Am 13.06.2008 um 13:50 schrieb IOhannes m zmoelnig:

> Luigi Rensinghoff wrote:
>> Hi List...
>> I have a patch that drives the cpu-load up
>> Wha do you think is the most common source for that ??
> streams of messages (i often find that people just send tons of
> statechanges triggering all kind of superfluous calculations, while  
> they
> really are just interested in the "settled" state)
> vline~

> naive search implementations, denormals, memory allocation,...

Could you explain that a little more ??? denormals, memory allocation ??

>> How should i pin down the malicious circuit/external or whatevr it  
>> is..
> hmm...
> try to find out when problems occur (do you have constant load?  
> spikes?
> is the CPU load growing while the patch is running?) what does this  
> tell
> you regarding your program logic?
> try to disable parts of the patch (by deleting it). does the  
> problem go
> away? try to narrow down the culprit.
> use [print] for debugging rather than the numberbox (nbx will not tell
> you if a number changes 10000 times per tick)
> use a profiler (e.g. valgrind, shark,...)

What is that ???

>> It seems not to be related to Audio-Processing
> even with audio turned off, [vline~] has a known bug (fixed by claude,
> but i don't know whether this has already made it into Pd) that would
> start eating CPU if you keep sending it messages.
> there might be other objects that have similar problems (that is
> audio-objects that start eating CPU without dsp-on)

it could have been that actually....i realized it was behaving very  
strange and replaced it ....

> fgmasdr
> IOhannes
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Luigi Rensinghoff
luigi.rensinghoff at freenet.de

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