Hi Dave, On 12/19/2011 03:12 PM, Dave Phillips wrote: > Greetings, > > A quick update on the problem. Two things appear to have helped > considerably: I now run the rtirq script to optimize the IRQ > assignments, and I set the sr for my Delta 66 to 48k, the same rate as > JACK. It had been set at 44.1 with JACK running at 48k. Whoops. > > A3 is much happier, even without the rt-patched kernel The important parts - regarding low latency audio - of the RT patch have been in mainline since 2.6.39. > but I intend to > build and install the 3.0-rt sources anyway. While in general this is beneficial, it's much easier to get it wrong than get it right. Unless you aim for very low latencies < 2ms or need to have 100% [software,scheduler] reliability (for on-stage performances) a default voluntary-preemt kernel with 'threadirq' should be sufficient. YMMV. Personally I have not yet succeeded to compile a re-usable reliable 3.0.X-rt; Some revisions require nohz option, some others have problems with suspend/resume and/or power-off. It's a bit of a kludgy situation. However it is possible to get a reasonably stable desktop: 3.0.6-rt17+ SMP PREEMT x86_64 has an uptime of 68 days here, zero x-runs since then with jackdmp 1.9.7 @64f/p * 3p/c. I have not yet tried 3.2-rc5-rt7 > My thanks to everyone who responded, I appreciate the assistance. > > Best, > > dp > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
