On Sun, Dec 11, 2011 at 9:39 AM, Ralf Mardorf <ralf.mardorf@xxxxxxxxxxxxx> wrote: >> grep audio /media/archlinux/etc/security/limits.conf > @audio - rtprio 65 > @audio - nice -10 > @audio - memlock 40000 > A recent jack update sets those limits for you. Do not set nice value. I'd recommend this: @audio - rtprio 99 @audio - memlock unlimited If you're looking for linux 3.0.12-rt30 and you happen to have a recent intel processor (icore): http://bbarros.com/archstudio/