From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4AA79A88.7070500@domain.hid> Date: Wed, 09 Sep 2009 14:07:36 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <793108.19562.qm@domain.hid> <4AA691B8.4090204@domain.hid> <394564.56258.qm@domain.hid> <4AA6D85C.8040707@domain.hid> <982599.63991.qm@domain.hid> <4AA6DE47.8010804@domain.hid> <934774.26170.qm@domain.hid> <4AA77F8D.3090709@domain.hid> <4AA799AD.9070402@domain.hid> In-Reply-To: <4AA799AD.9070402@domain.hid> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] RT Task RPC over a POSIX/Native Queue List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Gilles Chanteperdrix Cc: "xenomai@xenomai.org" Gilles Chanteperdrix wrote: > Jan Kiszka wrote: >> As you do not care about determinism of the network communication, you >> also do not need RTnet. It would only introduce the risk that non-RT >> network participant overload your box. And this load would show up in >> the RT domain because RTnet would have to handle it. > > You can solve that by limiting the non real-time traffic to a maximum > rate, and always keep some bandwidth for the real-time traffic. This is > a bit more complicated than nomac, but not that much. But of course if > you do not need packets to be sent ASAP, I agree that rtnet is overkill. Right. But the problem, err, challenge is that this rate limiting has to be installed either into the switch/router that your RT box is attached to or into all nodes that may talk to it. Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux