If you're using jack, is the jack server running without dropouts with other software? I'm only suggesting to consider sources other than Pd as well.
> On Jan 30, 2018, at 9:25 PM, pd-list-requ...@lists.iem.at wrote: > > Date: Tue, 30 Jan 2018 21:25:26 +0100 > From: Roman Haefeli <reduz...@gmail.com <mailto:reduz...@gmail.com>> > To: Pd-List <pd-list@lists.iem.at <mailto:pd-list@lists.iem.at>> > Subject: Re: [PD] glitches when streaming UDP > Message-ID: <1517343926.2187.14.ca...@gmail.com > <mailto:1517343926.2187.14.ca...@gmail.com>> > Content-Type: text/plain; charset="utf-8" > > On Die, 2018-01-30 at 16:38 +0100, Dan Wilcox wrote: >> Is it running with the *same* OS and settings? > > As far as I can tell: yes. Same OS (Ubuntu 16.04), same Kernel (4.13.0- > 32-lowlatency), both tuned so that "realtimeconfigquickscan" doesn't > complain anymore. This includes configuring /etc/security/limits.conf, > adding user to audio group, making high-precision timer /dev/hpet und > realtime clock /dev/rtc readable by members of audio group, etc. I get > stable performance with Ardour with the same qjackctl settings, with > built-in soundcard, but also with external USB sound interface on BOTH > machines. > >> It might be a scheduling issue with the kernel, realtime settings, >> crappy networking driver, etc. > > I thought about that, too. But why does it affect only Pd? On the > "troubled" machine - where everything else runs supersmooth - this > setup suffers a couple of glitches per second (jack routing): > > mpv -> Pd running [adc~]-[dac~] -> system output > > The probable causes you mentioned would affect other audio softwares, > too, wouldn't they? > > The Pd version doesn't seem to make a difference... > > Anyway, thanks for your thoughts. > > Roman -------- Dan Wilcox @danomatika <http://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/>
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