On Sunday 09 March 2008 12:12:24 Hartmut Noack wrote: > > James Stone hat gesagt: // James Stone wrote: > >> Do you have any idea what kind of latency under jack I would > >> expect from a CM-106 based card vs. a "Burr-Brown from TI" > >> chipset (Behringer UCA 202). > > > > All USB cards (in ALSA) have the same latency. > > Is that a fact? [SHOCK] So, if I use a Edirol UA-101 for appr. 550 Eur > it would force me to use the same settings for jack (for 17ms that is) > as my crude Behringer U-Control?? You should be able to achieve much better latencies than that, even with the U-Control. I can run all my USB devices, including the crappy UCA 202, at 4ms latency (48000/64/3). I don't get any xruns, except when starting some JACK clients (but there a higher latency doesn't help much either). This is with a -rt kernel, of course, and tuning the IRQ priorities with chrt made a huge difference. I got the best results when I increased the priorities for rtc and usb, but not for the machine's built-in soundcard (which I don't use at the same time). Dominic _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
