[PD] gui causing audio stutters?

Matthew Nish-Lapidus mattn-l at rogers.com
Thu Nov 13 22:02:07 CET 2003


I use PD for audio performance all the time and I run into audio 
stutters/dropouts regularly, but not always.  It's a little 
unpredictable.  Sometimes they happen because of GUI processes, 
sometimes they happen because of audio file reading/hard drive 
activity. I'm using readsf~ to play audio files, and when i load a new 
file sometimes i get a dropout and sometimes i don't... same thing for 
loading abstractions and opening/closing patch windows.

I'm not sure how to resolve this.. running in -rt mode used to help, 
but i'm running on os x and -rt mode doesn't exist any more.  I'm not 
really sure what to do about these problems, but the more I play live 
the less acceptable they are.

Matt Nish-Lapidus

matt at ekran.org // mattn-l at rogers.com

"What's this fish doing in my ear?"

On 13-Nov-03, at 2:24 PM, Josh Steiner wrote:

> i just wanted to poll the users out there about thier experience with 
> audio stutters and glitches caused by the pd gui.  I'm working on a 
> realitime performance environment and am banking on being able to 
> instantiate objects, popup new windows and general edit patches live, 
> with audio processing going on.  i havnt gotten my ALSA all tightly 
> configured yet, so i havnt been able to do some hardcore testing yet, 
> so I was interested in how things are going for all of you.
> with your setup, if you popup abstraction windows, does audio 
> skip/stutter?  A) never B) sometimes C) always.
> if need be i'll run to pd processes to avoid the skips, one being a 
> -nogui audio process niced to -20, the other being a -noaudi gui front 
> end to control the audio.  if i can, i'd like to avoid this since it 
> will complicate the system a lot.
> do you have tips for how to improve the performance?
> i'd appricaite any info you have about your rig, thanks!
> -josh
> -- 
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