Re: [Xenomai-help] posix functions for real time and non real time

[Philippe Gerum <philippe.gerum@domain.hid>]

Jan Kiszka wrote:
> Gilles Chanteperdrix wrote:
>> On Jan 8, 2008 2:44 PM, Jan Kiszka <jan.kiszka@domain.hid> wrote:
>>> Gilles Chanteperdrix wrote:
>>>> When you try to mix up real-time and non real-time threads, it all
>>>> becomes very complicated. You do not need your complication: just make
>>>> all your tasks real-time tasks (using priority 0 for low priority
>>>> tasks) and forget about __real_* calls.
>>> That can be inefficient in large applications: You don't need the
>>> (average-case) overhead of Xenomai IPC for pure non-RT interaction. And
>>> IPC object creation is precisely the critical point, because their type
>>> cannot be told apart by the wrapping layer based on generic parameters.
>> The point is that you usually do not care.
>>
> 
> My customer does. :)
> 
> E.g. note that Xenomai IPC does not scale on SMP like glibc/futux-based
> stuff does (repeating once again: in the average case).
> 

You mean in the non contended case.

-- 
Philippe.