28 Jul
2019
28 Jul
'19
10:21 a.m.
On 7/28/19 5:08 PM, liebrecht(a)grossmann-venter.com wrote:
On 2019-07-28 08:15, Ralf Mardorf wrote:
I'm actually surprised that Mixbus + jack started without jack rt
permissions.
On Sun, 2019-07-28 at 07:26 -0400,
liebrecht(a)grossmann-venter.com wrote:
what have you already done?
I always used the realtime checkbox on cadence and was always suspicious
of it.
I went and read up on it and did.
dpkg-reconfigure -p high jackd
Didnt expect it to make a difference but it did! Is it preferable to set every process involved e.g. /
USB system / alsa
/ mixbus at high priority.
Definitely not. Only the audio *treads* of the process should be
elevated. The processes themselves (GUI etc) should be lower priority in
order to not interfere with audio i/o.
The USB IRQ (kernel with threadirq) of the audio-device should be
elevated. On debian based systems install the "rtirq-init" package.
JACK's process callback (jackd -P config option) should have a slightly
lower priority than the IRQ.
ciao,
robin