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Xruns
by Jonathan Ryshpan
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I'm back to using Jack for recording on Fedora-11 Linux, using input
from the line port to be recorded using Audacity. Jack is reporting what seems to be a large number of xruns, which I don't remember seeing on Fedora-10 on the same system. Typical statistics are as follows. These statistics were recorded without audacity (or any other audio application) running: DSP Load: 0.084% Sample Rate 48000 Hz Buffer Size 1024 Frames Realtime Mode Yes Transport State Rolling Xrun count 10 (11) Min Sched Delay 0.055 msec Last Reset 15:05:42 (00:36:14) Questions: * Is this a reasonable number of xruns? (I doubt it.) * What is the exact meaning of 10 (11)? I.e. 10 of what, 11 of what? * What exactly does it mean for jack to be "rolling"? System description * AMD Quad-Core Processor running at 1.3 Ghz * 8 Gbytes RAM * Fedora-11 with all updates including * qjackctl-0.3.4-1.fc11.x86_64 * alsa-plugins-jack-1.0.20-2.fc11.x86_64 * jack-audio-connection-kit-1.9.2-2.fc11.ccrma.x86_64 * pulseaudio-module-jack-0.9.15-14.fc11.x86_64 Thanks - jon _______________________________________________ Jack-Devel mailing list Jack-Devel@... http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org |
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Re: Xruns
by Ralf Mardorf
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Jonathan Ryshpan wrote:
> I'm back to using Jack for recording on Fedora-11 Linux, using input > from the line port to be recorded using Audacity. Jack is reporting > what seems to be a large number of xruns, which I don't remember seeing > on Fedora-10 on the same system. > > Typical statistics are as follows. These statistics were recorded > without audacity (or any other audio application) running: > DSP Load: 0.084% > Sample Rate 48000 Hz > Buffer Size 1024 Frames > Realtime Mode Yes > Transport State Rolling > Xrun count 10 (11) > Min Sched Delay 0.055 msec > Last Reset 15:05:42 (00:36:14) > > Questions: > * Is this a reasonable number of xruns? (I doubt it.) > * What is the exact meaning of 10 (11)? I.e. 10 of what, 11 of > what? > * What exactly does it mean for jack to be "rolling"? > > System description > * AMD Quad-Core Processor running at 1.3 Ghz > * 8 Gbytes RAM > * Fedora-11 with all updates including > * qjackctl-0.3.4-1.fc11.x86_64 > * alsa-plugins-jack-1.0.20-2.fc11.x86_64 > * jack-audio-connection-kit-1.9.2-2.fc11.ccrma.x86_64 > * pulseaudio-module-jack-0.9.15-14.fc11.x86_64 > > Thanks - jon Do you hear any glitches? Maybe you got the xruns while starting an audio application. Ralf _______________________________________________ Jack-Devel mailing list Jack-Devel@... http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org |
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Re: Xruns
by Jonathan Ryshpan
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On Sun, 2009-08-23 at 10:45 +0200, Ralf Mardorf wrote:
> Jonathan Ryshpan wrote: > > I'm back to using Jack for recording on Fedora-11 Linux, using input > > from the line port to be recorded using Audacity. Jack is reporting > > what seems to be a large number of xruns, which I don't remember seeing > > on Fedora-10 on the same system. > Do you hear any glitches? Maybe you got the xruns while starting an > audio application. I don't hear any glitches listening to the audio stream on the system speakers. The xruns seem to appear randomly, or just possibly from doing things with non-audio applications. jon _______________________________________________ Jack-Devel mailing list Jack-Devel@... http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org |
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Re: Xruns
by Ralf Mardorf
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Jonathan Ryshpan wrote:
> On Sun, 2009-08-23 at 10:45 +0200, Ralf Mardorf wrote: > >> Jonathan Ryshpan wrote: >> >>> I'm back to using Jack for recording on Fedora-11 Linux, using input >>> from the line port to be recorded using Audacity. Jack is reporting >>> what seems to be a large number of xruns, which I don't remember seeing >>> on Fedora-10 on the same system. >>> > > >> Do you hear any glitches? Maybe you got the xruns while starting an >> audio application. >> > > I don't hear any glitches listening to the audio stream on the system > speakers. The xruns seem to appear randomly, or just possibly from > doing things with non-audio applications. > > jon > If you get xruns without hearing glitches, while working on a song, I guess this isn't bad and might be, because of connecting and disconnecting clients, hectic opening and closing audio editors etc.. I only would be scared if there would be xruns when recording the final mix. Cheers, Ralf _______________________________________________ Jack-Devel mailing list Jack-Devel@... http://lists.jackaudio.org/listinfo.cgi/jack-devel-jackaudio.org |
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