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From: Jan Kiszka <jan.kiszka@domain.hid>
To: "Torsten Kröger" <t.kroeger@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] POSIX Skin: Changing scheduling parameters of threads in other processes
Date: Fri, 10 Aug 2007 16:45:30 +0200	[thread overview]
Message-ID: <46BC7A0A.1060309@domain.hid> (raw)
In-Reply-To: <000c01c7db59$181f8680$c124a986@domain.hid>

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Torsten Kröger wrote:
> 3. Is there a possibility of using the native skin and the posix skin at
> the same time?

Yes: Write your message passing protocol as an RTDM protocol device.
That way you would have the socket API as interface (for all skins!) and
could even fiddle with priority as you like. We went this way for our
TiMS (Tiny Message Passing Service) in the RACK framework [1]. It's
fairly specialised due to its roots and its applications domain, but the
general idea is surely transferable.

Note that we do _not_ play with the receiver priorities, we rather
prefer a stable _static_ system configuration. That's better for hard
RT, and prio-inheriting MPI generally doesn't help about worst-case
latencies anyway (given a non-broken static prio design).

Jan

[1] http://developer.berlios.de/projects/rack


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  parent reply	other threads:[~2007-08-10 14:45 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-08-10 14:16 [Xenomai-help] POSIX Skin: Changing scheduling parameters of threads in other processes Torsten Kröger
2007-08-10 14:28 ` Gilles Chanteperdrix
2007-08-10 14:45 ` Jan Kiszka [this message]
2007-08-10 15:11   ` Gilles Chanteperdrix
2007-08-10 15:12 ` Herman Bruyninckx
2007-08-12 15:17   ` Torsten Kröger
2007-08-12 17:56     ` Jan Kiszka
2007-08-14 21:31       ` Torsten Kröger
2007-08-15 17:27         ` Jan Kiszka
2007-08-16  9:19           ` Torsten Kröger
2007-08-17  8:19             ` Jan Kiszka
  -- strict thread matches above, loose matches on Subject: below --
2007-08-09 14:18 [Xenomai-help] POSIX Skin: Changing scheduling parameters ofthreads " Philippe Gerum
2007-08-09 18:37 ` [Xenomai-help] POSIX Skin: Changing scheduling parameters of threads " Torsten Kröger
     [not found] <mailman.2979.1186650741.22887.xenomai@xenomai.org>
2007-08-09  9:41 ` Torsten Kröger
2007-08-09 10:33   ` Gilles Chanteperdrix

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