[PD] pd clicking with jack/linux
derek at umatic.nl
Tue Jul 1 00:32:12 CEST 2008
I run PD as root (not sudo, but real root) for click-free operation. But
Ubuntu has this weird thing where you can't be root, you can only sudo.
Very strange... anyways, worth a try.
I also use fluxbox with very little else going on in the GUI. Spent
almost a year tuning Linux to get really optimum performance for live
gigs and recording situations, really the idea is that less is more.
Ubuntu/Red Hat/SuSE etc just have too many processes (especially
graphical ones that cause interruptions) running at once, IMHO.
> i don't use pd-extended, but i think it's almost the same. the only
> option missing is: -nosleep (useful for dual-core).
> so be sure in qjackctl - setup:
> Periods/Buffer: 2
> Sample Rate: 44100 (or more)
> Frames/Period: 256 (i am running at 64 without glitches)
> then for pd:
> pd -rt -jack -r 44100 -nosleep -audiobuf 256 -channels 16 -alsamidi
> -mididev 1 etc...
> and finally, be sure to edit /etc/security/limits.conf:
> @audio - rtprio 99
> @audio - memlock unlimited
> @audio - nice -20
> and of course, add yourself to audio group (reboot to be sure). let us know.
> ah yes, a long time ago i was using icewm, because gnome was causing
> glitches in pd. but now it seems ok here.
> Atte André Jensen wrote:
>> I get clicks and "DIO errors" at random intervals under linux/ubuntu
>> with jack (no xruns). I have a 17ms latency setup with jack and a
>> realtime patched kernel and the rest of my audio setup works great with
>> I installed pd from Pd-0.40.3-extended-20080628-ubuntu-gutsy-i386.deb
>> Any one else running a similar pd with a similar setup and either have
>> it working or experience the same problems?
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derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
---Oblique Strategy # 97:
"Is the style right?"
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