Jan Panteltje wrote:

> Linux, RT or not, is not a real time system.
> It is a multi-tasker.
> I usually design some extra hardware if things need to run fast and
> continuously. hardware that includes buffers.
> example:
> http://panteltje.com/panteltje/raspberry_pi_dvb-s_transmitter/
>
> Much these days can perhaps be done with an FPGA hat (have not tried
> that). Else you will need to do some electronic design, soldering, etc.
> In any case you also need to write the software to interface to that,
> You need to specify your requirements.
>
> Sometimes a simple PIC micro-controller is all you need to add to get past
> the task switch interrupt.. But it will need to be programmed too.

I know a guy from the mailing lists (Gene Hasket) that is operating some CNC
and was complaining about lack of RT in linux. He is using some patched
kernel from somewhere - I do not recall the details, but it is really a
problem that Linux is not applicable to time sensitive applications.

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