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Old 04-22-2007, 12:13 PM   #1
LQ Newbie
Registered: Apr 2007
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Where to Find a Guide to Realtime Kernel for Low Latency Audio in Ubuntu?

I haven't been able to find any good documentation on configuring a real time kernel for pro audio in Ubuntu.

I wanna use pure data for live looping performances while using some soft synths and what not and so far, Jack says my latency is 40ms. That's not good enough and I know it can improve.

Old 04-23-2007, 11:21 PM   #2
Patrick K
Registered: Apr 2007
Distribution: Feisty (Ubuntu Studio)/Edgy
Posts: 69

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I'm interested, too.

Using Jack, Hydrogen, and Ardour I got my latency down to 11.6ms (frames 512, sample rate 88,200, M-Audio card). You can run Jack in real time but you may need to gksu to get it. That's what I do for Hydrogen, but I rather not run as root for these apps.

Here is some info on a zero latency kernel

I saw some other info but can't locate it right now. I recall it involved recompiling the kernel with the Linux Security Module (LSM). This allows real time access without being root. It looked more complicated than my experience is ready for.


latency, low, realtime

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