Re: Re: : [Xenomai-help] Running real time task on one of the cores of

Re: Re: : [Xenomai-help] Running real time task on one of the cores of

[M. Koehrer]

Hi Jan,

I found it in the latest SVN version but not in the 2.3 Xenomai... 
As my system is working currently very stable, I do not want to change the Xenomai version...

Regards

Mathias
> M. Koehrer wrote:
> > Hi Jan,
> > 
> >>> I also use rtnet. Unfortunately I am not able to force rtnet (RTDM
> based) to run on CPU core 1
> >>> without patching the RTDM code.
> >>> A couple of months ago, I already asked for this issue.
> >>> Jan, can you tell me the latest news regarding this issue?
> >> The global affinity mask is now part of Xenomai 2.3 (though I haven't
> >> tested it again after it was merged). 
> > 
> > Ah, I didn't know that! How can I set the affinity mask?
> 
> /proc/xenomai/affinity
> 
> > Perhaps this is the problem I have...
> > 
> >> What part of RTnet precisely is
> >> resisting to move to CPU 1, or what do you currently have to patch?
> > 
> > Currently I see the rtnet tasks "rtnet-stack" and "rtnet-rtpc" to be
> assigned to CPU 0.
> > I have patched xenomai/ksrc/skins/rtdm/drvlib.c in the call
> > to xnpod_start_thread(). I replace XNPOD_ALL_CPUS by cpumask_of_cpu(1).
> 
> That should be obsolete when issuing
> 
> echo 2 > /proc/xenomai/affinity
> 
> before you load RTnet.
> 
> Jan
> 
> 

-- 
Mathias Koehrer
mathias_koehrer@domain.hid


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Re: : [Xenomai-help] Running real time task on one of the cores of

[Jan Kiszka]

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M. Koehrer wrote:
> Hi Jan,
> 
> I found it in the latest SVN version but not in the 2.3 Xenomai... 
> As my system is working currently very stable, I do not want to change the Xenomai version...

Oh, indeed, that got merged after the release. Obviously I'm too
bleeding-edge focused. :)

Try to extract the diff of #2011 and apply it on your tree. This should
fit seamlessly.

Jan


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Re: Re: : [Xenomai-help] Running real time task on one of the cores of

[M. Koehrer]

Hi Jan, 

I tried to apply the patch of #2011 to the 2.3 Xenomai and this works fine.
I can now determine the CPU to run all real time stuff by writing into
/proc/xenomai/affinity.

Thanks a lot.

Mathias
> > I found it in the latest SVN version but not in the 2.3 Xenomai... 
> > As my system is working currently very stable, I do not want to change the
> Xenomai version...
> 
> Oh, indeed, that got merged after the release. Obviously I'm too
> bleeding-edge focused. :)
> 
> Try to extract the diff of #2011 and apply it on your tree. This should
> fit seamlessly.
> 


-- 
Mathias Koehrer
mathias_koehrer@domain.hid


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