[mod-users] Requesting overview of the software stack

Ytai Ben-Tsvi ytaibt at gmail.com
Fri Apr 8 20:38:39 UTC 2016


That's good to hear!
What then are the main causes for non-determinism in audio processing times
(resulting in xruns)? Non-time-deterministic algorithms of the actual
effects? Long ISR? Long critical sections? Cache misses? Bus contention?
Is this just a matter of getting the work done in order to resolve this or
are there still some unknown causes?

On Fri, Apr 8, 2016 at 11:42 AM, Jeremy Jongepier <jeremy at moddevices.com>
wrote:

> On 04/08/2016 08:08 PM, Ytai Ben-Tsvi wrote:
> >> And a specific question: are you using vanilla Linux or did you apply
> any
> >> >> realtime patch to the kernel?
> >> >>
> >>
> >> I think the MOD runs on the sunxi kernel - this is common with ARM
> >> embedded platforms that are not (yet) upstreamed to the mainline linux
> >> kernel.
> >> https://github.com/moddevices/linux-sunxi
>
> Hello,
>
> The MOD Duo runs a linux-sunxi based kernel with the real-time patch set
> applied. JACK runs with elevated rtprio just like the IRQ thread of the
> audio driver.
>
> Jeremy
> _______________________________________________
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> users at lists.moddevices.com
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>
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