[PD] pd clicking with jack/linux

[Matt Barber]

I don't use ubuntu either, but out of curiosity, what happens if you run:

sudo su -

??

Matt




> Date: Tue, 01 Jul 2008 00:32:12 +0200
> From: Derek Holzer <derek at umatic.nl>
> Subject: Re: [PD] pd clicking with jack/linux
> To: patrick <puredata at 11h11.com>
> Cc: pure data <pd-list at iem.at>
> Message-ID: <48695EEC.7070200 at umatic.nl>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> 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.
>
> best,
> D.
>
> patrick wrote:
>> hi,
>>
>> 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:
>> Realtime
>> 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.
>>
>> pat
>>
>>
>> Atte Andr? Jensen wrote:
>>> Hi
>>>
>>> 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
>>> jack.
>>>
>>> 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?"
>