Hi Pierre,

There is also the Puredyne repository avalaible with ubuntu (karmic or lucid)
with their own set of packages for PD :

https://launchpad.net/~puredyne-team/+archive/ppa?field.series_filter=lucid

(you can just add it with : sudo apt-add-repository ppa:puredyne-team/ppa
or with synaptic and take what you like)

I use the 64 bits on my desktop with the RT kernel (2.6.31-11-rt)
with a jack setting that gives 4 ms
(PS :Also with the debian tools you can build very easy your own RT kernel packages if you want
to.)

Stephane

On Sun, Nov 14, 2010 at 6:28 PM, Marco Donnarumma <devel@thesaddj.com> wrote:
I'm also having real good experience with Ubuntu 10.4 (slightly customized with the UStudio packages).
I agree that only Firewire devices performance seems to really improve with a RT kernel.

In RT with a Ricoh chip and FFADO from svn I can have 8ms latency (I only tried using 6 channels and 8 i/o open), although I have to note that a few times with heavy load of audio streaming amongst different applications jack dies and needs to be restarted.
I didn't need to set IRQ so far.
In non-RT I use a edirol ua-25 which works pretty good with low latency too (but not as good as firewire rt).

M





--
Marco Donnarumma aka TheSAD
Independent New Media Arts Professional, Performer, Teacher
Ongoing MSc by Research, University of Edinburgh, UK


PORTFOLIO: http://marcodonnarumma.com
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