Fons Adriaensen wrote: > On Mon, Aug 04, 2008 at 10:57:28PM +0100, garryo wrote: > >> you can set the rt priority as high as 99, but i found that this >> made my box sluggish and unresponsive ( but not the soundcard!). > > Isn't that kind of strange ? Assuming the soundcard interrupt > takes a tiny fraction of the available CPU time, it shouldn't > slow down your system even at the highest priority. > > If this happens, and it does not happen with your current > (lower) setting, wouldn't that mean that > > 1. it takes a more than trivial time to execute, > 2. with the current setting it's still being > pre-empted, and not just occasianally, but > in a systematic way. > > Ciao, > yes, kind of strange, i see your point. nevertheless this was the observed behaviour with ardour playing back a project of 16 stereo tracks. the ardour gui was very jerky and slow to update. reducing the rt priority of soundcard improved UI response, BUT i must admit that i was not very systematic in my efforts to improve latency on my box, often twiddling several knobs at once. regards, G. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
