[linux-audio-user] Dual Core?

Debian testing current libpam-modules 0.79-4 supports rtprio (I use it). To be sure just run : jackd -R -P 70 -d dummy in another shell launch : top -H -p `pidof jackd` PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 26812 moino 18 0 21652 21m 3892 S 0 2.1 0:00.01 jackd 26813 moino 18 0 21652 21m 3892 S 0 2.1 0:00.00 jackd 26814 moino 19 0 21652 21m 3892 S 0 2.1 0:00.00 jackd 26815 moino -81 0 21652 21m 3892 S 0 2.1 0:00.00 jackd 26816 moino *-71* 0 21652 21m 3892 S 0 2.1 0:00.00 jackd If rlimit is not working you won't see a thread at prio -71 Don't be afraid if you don't have the thread at -81 you must have an old version of jackd. If you can verify this you can be sure your problem does not come from rlimit or realtime stuff. You will have to investigate more. Goood luck. PS. If you have a dual core setup I'm not sure your jackd version is patched against some hw clock drift problems. Do you have the --clocksource option when you launch jackd -h ? David.