29 Oct
2007
29 Oct
'07
7:15 p.m.
On Mon, 2007-10-29 at 23:54 +0200, Chuckk Hubbard wrote:
On 10/29/07, Florian Schmidt
<mista.tapas(a)gmx.net> wrote:
On Monday 29 October 2007, Chuckk Hubbard wrote:
With JACK output?
From the Csound manual:
"DO NOT use "--sched" if you are using JACK for audio output. JACK
controls scheduling for the audio applications connected to it, and also
tries to run at the highest possible priority. If the "--sched" flag is
used, Csound and JACK will be competing rather than cooperating,
resulting in extremely poor performance."
--ll
On 10/25/07, Florian Schmidt
<mista.tapas(a)gmx.net> wrote:
-P -p256 -n2
Well, if chrt works now without sudo, try running
jackd -R -P 70 -d alsa ...
again. It should work now, too..
Update: I just discovered that running jackd -R -P 70 -dalsa -r44100 as ROOT doesn't even set priority 70.
jackd then
runs as a root
process with priority 20, according to both chrt
and top.
Apparently my system is not able to run anything higher than
20 priority;
does this mean my kernel is misconfigured, or
might it be
something else?
-Chuckk
install htop
run it
press f2 [setup]
-> Display Options
-> uncheck "Hide userland threads"
-> uncheck "Hide kernel threads"
Do you see all 4 jack threads now?
Woop, there it is. Thanks. I see 5 actually, one -71, one -81
(watchdog?), and the rest 20. Running Csound with its --sched=N flag,
I also see two csound processes, one of which is -70 and the other 20,
no matter what value I put... time to take that up with the Csound
list I guess.