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Jamin causes xruns count to explode

I am posting another thread as I'm not sure if this belongs in my old on latency tweaking.

Last night I finally tweaked Jack so that it ran stable, meaning zero xruns. The latency was acceptable as well. I was running Ardour and decided I would try to play around with Jackmin.

Upon loading Jackmin the xruns began to skyrocket through the roof. Does anyone have any idea why this is happening?

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Hi saghaulor, That's perhaps

Hi saghaulor,

That's perhaps due to your hardware, what's your system?
Did you try to increase latency?

  • By xavier at 08/09/2007 - 16:02
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Do you mean Jamin?

Jamin is realtively CPU hungry, most mastering plugins are. It's fine to run Jack in playback only mode and increase your frames/period while mastering, as you wouldn't normally be overdubbing your project at the same time.

  • By Daniel at 08/09/2007 - 16:09
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RE: I did mean Jamin

I'll give playback mode a shot tonight and see what it does. Hopefully I'll have a response for you by the end of the night.

Hardware:
Computer:
Averatec 2300
Amd Turion 64 X2 TL-50 (1.6GHz)
1 gig DDR2
100 gig SATA HDD
Dual Layer DVD+/-RW
nVIDIA GeForce Go 6100
1 Firewire (4 pin)
3 UBS 2.0
4-in-1 Media Reader
12.1" WXVGA Display
Sound Card:
M-Audio Duo

  • By saghaulor at 08/09/2007 - 19:50
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Update

I tweaked Jack to run in playback mode. I then started Ardour without any xruns. I opened my previously recorded file, still no xruns. I then opened JAMin, still no xruns. A minute or two into the session I incurred one xrun and then another several minutes later. I figure with a slightly higher frames/latency I can run JAMin xrun free.

My only concern is this. Will I be able to write the changes in JAMin to disk now that my settings are set to playback? I'm pretty sure I will be able to, I'm just asking to verify my belief.

Daniel, again I thank you so much for you assistance.

  • By saghaulor at 08/10/2007 - 00:10
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USB sound cards

Playback means that you can only play with your sound card but you can record internal sounds. USB sound cards usually works better if you use 3 Periods/Buffer in QJackCtl setup.

  • By xavier at 08/10/2007 - 00:51
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