Josh Lawrence wrote: > quick question: > > if you are using jack with a vanilla kernel, should you still keep the > realtime option enabled in jack, or run jack without the -R? my > reasoning tells me that no realtime patch = no realtime in jack, but I > just wanted to check myself with you all... > Have a look at the SCHED_FIFO section in 'man sched_setscheduler' <http://linux.die.net/man/2/sched_setscheduler> The 'realtime' jack option relates to the use of SCHED_FIFO (ie the scheduling priority) on selected jack threads (but not all!). The 'realtime' kernel patch relates to different issues, eg, allowing user processes to preempt kernel processing when possible && appropriate, thus reducing inherent processing latencies. So the jack -R option is desirable regardless of which kernel you're running. That's hardly a complete description of the matter, but I think it's close enough for now :-). cheers, Cal _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
