Re: Re: Ethernet communication from real time thread

[Sujit Karataparambil <sjt.kar@gmail.com>]

I think you have a point it certainly needs to be checked whether
the RT_PREEMPT patch behaves with an package like Xenomai.
My initial reaction is just that in the case of Xenomai, it just applies
an Hard Real time constraint on the RT_PREEMPT patch.

But it is certainly much better to investigate what happens when we
have an Xenomai like RT System behave otherwise. Does it change
the RT_PREEMPT patch.



On Thu, Apr 30, 2009 at 4:11 PM, M. Koehrer <mathias_koehrer@arcor.de> wrote:
> Hi Sujit,
>
> thanks for your response.
> I am actually interested in the way, the communication with the RT_PREEMPT patch
> works to get an understanding what pieces of the overall system can be tuned and
> which priorities of threads are relevant and which SMP affinities are relevant.
>
> As rtnet can only handle UDP it is obvious, that it is performing slightly better,
> however a good understanding is important in any case.
>
>> 1. Is Xenomai is Configured to take care of Multicore Hard real time
>> Computation? Since
>>   you say that the Thread is running in Processor 3. How is Xenomai
>> Configured in case
>>   of the Multicore Solution
>> 2. What are these hard real time computations in this particular thread?
>> 3. How is Xenomai Taking care of this thread?
>> 4. RTNET is running the UDP Part of Thread or Does not fork in Xenomai.
>>
>
> Regards
>
> Mathias
>
> --
> Mathias Koehrer
> mathias_koehrer@arcor.de
>
>
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-- 
-- Sujit K M
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