I still have a lot of DIO errors... no idea how to manage that?
"I also do get some xruns now and then when moving around gui object"
I have a lot (1 every 30 sec when I don't touch nothing, more if I play
with a patch), and they are really audibles...
r
Raphael Raccuia a écrit :
tried with just one security config, no changes...
Lorenzo a écrit :
-RME Multiface I /HDSP expresscard
So this (not the pcmcia) works on linux? That's interesting news.
OT: it should... I asked on many forums to be sure it does, and people
said me "it's basically the same as pcmcia"... but I have a lot of
trouble: freeze on boot 9/10... but 1/10, when it works it works
pretty good! It could be a hardware issue (my computer). I'm talking
with a RME technician to fix it, or almost know where the problem
comes from...
I also do get some xruns now and then when moving around gui object
(like selecting a whole lot of objects and moving them around) even
with rt kernel, pd run with -rt etc etc...
Otherwise it is usually *quite* stable.
Lorenzo
Of course jack run with -R. I repeat I don't have any problem to run
application with really good latency: yesterday, I forgot to increase
buffer as I worked on a 96000Hz Ardour session... I noticed I was
working at 5ms I/O after one hour recording and playing a lot of
tracks,
and no xrun, no problems...
I also think it's not a good Idea to run pd as root... and I suppose
other application won't connect to jack if I run it as root also.
I noticed I had two times the @audio config (limits.conf, audio.conf).
You'll say: "better twice than nothing"... But maybe it generates a
conflict... I try
Le mardi 12 octobre 2010 à 11:50 -0300, Bernardo Barros a écrit :
Don't run programs as root, your system will be as insecure as a
windows box...
Just allow rt privileges to the audio group, and add yourself to
this group.
Then start jack with rt privileges. All software linked to Jack will
run with -rt.
from http://jackaudio.org/faq
JACK requires real-time scheduling privileges for reliable,
dropout-free operation. The server requests these privileges when
running with the -R option.
Most recent distributions use PAM to manage the permissions of users
on a relatively granular level. If the file /etc/security/limits.conf
exists on your system, it is using PAM. In order to configure PAM such
that normal users can run jackd with realtime privileges make sure the
following lines exist:
@audio - rtprio 99
@audio - memlock unlimited
2010/10/12 Pedro Lopes<pedro.lo...@ist.utl.pt>:
If you start pd in sudo, you have to connect to jack in sudo mode.
Thus
start jack in sudo (or gksudo for qjackctl).
I advise to use an rt kernel too. See documentation of Ubuntu Studio.
On Tue, Oct 12, 2010 at 3:27 PM, Raphael Raccuia
<rafael.racc...@blindekinder.com> wrote:
Hi list,
I tested Pd rt as I need low latency for a performance next week...
It seems -rt flag doesn't have any effect. I measured Pd latency
with
jdelay, and always get 640 (@48000), so about 13ms (pd only)...
lower I
set buffer in jack (no less than 256), more DIO errors I get... and
there are a lot! This setting works great with many application
(Ardour...), with about 10ms (~15 really). So I would have ~25ms,
which
is acceptable, but too many DIO errors!
-what is -defeatrt setting? (I tried 0 and 1, no change)
-why is -rt flag without effect?
-tried nosleep, no change...
I also tried to start pd in root (sudo)...
It says:
priority 8 scheduling enabled.
priority 6 scheduling enabled.
(which I normally don't have)
but unfortunately can't connect to jack (state 17)
thank's for your help
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Pedro Lopes (ongoing MSc)
contact: pedro.lo...@ist.utl.pt
website: http://web.ist.utl.pt/Pedro.Lopes
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