[LinuxPPS] rt?

[Thiago Tiedtke]

Hi,

I done some tests (compile kernel and some examples from site capitain.at)
with RTAI+Linux to capture events via serial port, like described here:

http://www.captain.at/programming/rtai/serportint.php

But i'm very busy, and no have time to do statistics tests.

Someone work with this approach?

Best Regards,

Thiago Tiedtke dos Reis

2009/3/23 Cirilo Bernardo <cirilo.bernardo at gmail.com>

> On 3/23/09, Bernhard Schiffner <bernhard at schiffner-limbach.de> wrote:
> > On Monday 23 March 2009 18:21:56 Udo van den Heuvel wrote:
> >  > Do we need realtime patches?
> >  >
> >  >
> >  > http://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO
> >
> >
> > As usual: it depends.
> >
> >  If you can guarantee pps is the only interrupt: no
> >  If you can't: perhaps
> >  If you have an bloated, highly loaded, unpredictable desktop-system: yes
> >
> >  The main difference between mainline and rt is teh use of threaded
> interrupts.
> >  (Quasi all the other rt-topics got merged already.)
> >
> >  Threaded interrupt means, that the order to of processing interrupts is
> given by the scheduler.
> >  The scheduler is "easily" configurable.
> >
> >  Remember: rt means predictable, not fast.
> >  (It adds an other indirection in the pps-case)
> >
> >
> >  Bernhard
> >
> >
>
> LinusPPS has to run regardless of the presence of any additional
> patches, otherwise it will never be accepted in the main line.  I
> can't imagine any need for RT unless you are having serious problems
> with jitter due to latency.
>
> - Cirilo
>
> _______________________________________________
> LinuxPPS mailing list
> LinuxPPS at ml.enneenne.com
> http://ml.enneenne.com/cgi-bin/mailman/listinfo/linuxpps
> Wiki: http://wiki.enneenne.com/index.php/LinuxPPS_support
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://ml.enneenne.com/pipermail/linuxpps/attachments/20090323/c43bb803/attachment.htm