Chuckk Hubbard wrote: > Hallo. > I posted to the jackit-devel list too, so apologies if you're seeing > this again. No luck there... > > jackd version 0.103.0 tmpdir /dev/shm protocol 16 > 2.6.22.1-rt9 > Debian testing > > I've just noticed that I am unable to set jackd priority on the > command line. I have a script set up to use "sudo chrt" to change it, > but when I comment out that line in the script, jackd runs at 0 with > schedule "other". > > My script: > sudo chrt -fp 82 `pidof "IRQ-16"` > jackd --realtime -P 70 -dalsa -P -p256 -n2 -r44100 & > sudo chrt -fp 70 `pidof "jackd"` > chrt -p `pidof "IRQ-16"` > chrt -p `pidof "jackd"` > exit > > If I comment out the second sudo chrt line, the last line returns: > pid 5032's current scheduling policy: SCHED_OTHER > pid 5032's current scheduling priority: 0 > otherwise it is SCHED_FF and 70. chuckk, i can only try to guess. perhaps sudo on your system is not allowed to do chrt? on my system i have the file /etc/sudoers containing this two important lines: root ALL=(ALL) ALL nowhiskey ALL=NOPASSWD: ALL don't know if it could be the root of the problem, because if so, i would expect something like 'operation not permitted' error, but who knows. cheers, doc > > My kernel has: > # CONFIG_PREEMPT_NONE is not set > # CONFIG_PREEMPT_VOLUNTARY is not set > # CONFIG_PREEMPT_DESKTOP is not set > CONFIG_PREEMPT_RT=y > CONFIG_PREEMPT=y > CONFIG_PREEMPT_SOFTIRQS=y > CONFIG_PREEMPT_HARDIRQS=y > CONFIG_PREEMPT_BKL=y > # CONFIG_CLASSIC_RCU is not set > CONFIG_PREEMPT_RCU=y > > /etc/security/limits.conf has: > @audio - nice -10 > @audio - rtprio 99 > @audio - memlock 4000000 (someone on the jack list > suggested that my previous value "unlimited" was not recognized, so I > stuck this in but no change) > > and user "chuckk" is in group "audio". > > Lastly, the output from my script when the second sudo chrt line is > commented out: > ------------------------------ > pid 684's current scheduling policy: SCHED_FIFO > pid 684's current scheduling priority: 82 > jackd 0.103.0 > Copyright 2001-2005 Paul Davis and others. > jackd comes with ABSOLUTELY NO WARRANTY > This is free software, and you are welcome to redistribute it > under certain conditions; see the file COPYING for details > > JACK compiled with System V SHM support. > pid 5132's current scheduling policy: SCHED_OTHER > pid 5132's current scheduling priority: 0 > loading driver .. > Enhanced3DNow! detected > SSE2 detected > apparent rate = 44100 > creating alsa driver ... hw:0|-|256|2|44100|0|0|nomon > |swmeter|-|32bit > control device hw:0 > configuring for 44100Hz, period = 256 frames, buffer = 2 periods > ALSA: final selected sample format for playback: 32bit little-endian > ALSA: use 2 periods for playback > > -------------------------------------- > > Any ideas what I may have missed or misconfigured? > > Thanks! > -Chuckk > > > -- > http://www.badmuthahubbard.com > ------------------------------------------------------------------------ > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user > _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
