What happens if you set the frames/period settings higher? I have similar setup and can't get it to run on any lower than 1024 frames(if I want to avoid xruns), but then I've set the sample rate to 48000. I've never noticed any problems with the latency, it's at 46 or something now but I can't hear any difference between this and something lower, can you? .)
Best, Robert On Sun, Jun 5, 2011 at 10:24 AM, bart deruyter <[email protected]>wrote: > Hi all, > > since recently I'm experiencing more xruns in ubuntustudio 11.04, more > specifically using the lowlatency kernel. My audiocard is an external one, > firewire, and I use the firewire driver. They just started happening out of > the blue, without changing anything significantly. These xruns happen > randomly, not caused by anything I do on the desktop. When I keep qjackctl > running without any audio apps open, now and then, about each half hour, or > 20 minutes, there is an xrun. > > My limits.conf file seems to be as described on the wiki's over the web, I > have 4 GB or ram, a duocore processor.. I see no reason for problems. > I've got a latency of 17.4 msec, with a setting of 256 Frames/Perios, > Sample Rate of 44100, and 3 Periods/Buffer. So far this was the most stable > setup, though I'm sure I should be able to go to 128 Frames/Period with my > AudioFire12. But I can't, more xruns happen when using this setting. Setting > the samplerate higher I get more xruns too. I'd love to record on 96000, or > even 192000, which is possible with the audiocard, but the computer system > prevents this because of these xruns. > > This does make it unreliable for recording, which I want to do more > regularly and it makes me impossible to do recordings for others. I do not > want a system where I have to ask people to start playing again for the > recording because xruns. > > So, I was wondering, are there diagnostic tools, test scrips, tracing tools > to get me to the bottom of this? > > Grtz, > Bart > > http://www.bartart3d.be/ > > -- > Ubuntu-Studio-users mailing list > [email protected] > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > >
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