---------- Forwarded message ---------
From: o1bigtenor <o1bigtenor@???>
Date: Sat, May 13, 2023 at 9:05 AM
Subject: Re: [DNG] Information request (maybe OT - - - dunno)
To: jeremy ardley <jeremy@???>


On Fri, May 12, 2023 at 8:22 PM jeremy ardley via Dng
<dng@???> wrote:
>
>
> On 13/5/23 09:00, onefang wrote:
> >
> > Linux has a RT kernel, I use it on my Devuan desktop for music
> > production. Did I bring this back on topic? B-)
> >
> >
> The linux kernel is pretty snappy but it's not possible get 'true'
> deterministic performance for a user space applcation.
>
> I use linux all the time for 'real time' applications such as audio
> streaming and processing. If you use a soft SIP phone so are you.
>
> The problem comes down to microsecond timed control of hardware such as
> setting an output bit at a precise time. Linux does not guarantee that
> so you have to rely on hardware or run some clunky real time OS such as
> RTOS.
>
> Luckily the vast majority of applications don't need that precision. I
> gave the example of ArduPilot that is a highly complex system
> interfacing to many sensors and data sources and sinks and relying in
> precise timing. It did not use RTOS (I think some later versions may).
> It just required intelligent coding and the use of hardware for the
> precision operations.
>
> If you stick with linux you have pthreads for any conceivably complex
> application architecture - though any application that needs more than
> two threads per core is almost certainly badly designed.

Hmmmmmmmmm - - - - -further resources to research - - - - a right
plethora of goodies to look at!!!!!!!!!

Thank you very much!!!
>
> I also think RTOS and equivalents are highly obsolete these days and
> seem mainly used by legacy developers keen to keep themselves in a niche
> job.
>