From: Robert Schwebel <r.schwebel@pengutronix.de>
To: Sven-Thorsten Dietrich <sven@thebigcorporation.com>
Cc: linux-rt-users@vger.kernel.org,
Michael Olbrich <m.olbrich@pengutronix.de>,
kiszka@rts.uni-hannover.de
Subject: Re: jitter bursts
Date: Sun, 2 Sep 2007 14:05:51 +0200 [thread overview]
Message-ID: <20070902120551.GF23573@pengutronix.de> (raw)
In-Reply-To: <1188579323.4002.1.camel@sven.thebigcorporation.com>
On Fri, Aug 31, 2007 at 09:55:23AM -0700, Sven-Thorsten Dietrich wrote:
> > +--------+ +-----------+ +-----------+
> > | PC EPL | | Second PC | | EPL Clamp |
> > +--------+ +-----------+ +-----------+
> > | | |
> > \ +----------+ /
> > \----| Hub |------/
> > +----------+
>
> Can you eliminate the hub as a variable?
>
> I have seen very similar experiments with multicast packets where the
> hub delivered packets out of order, or in a delayed fashion on one port,
> but not on the other.
We've tried it with two different hubs (one industrial DIN rail Phoenix
contact model and a standard netgeat one), without changes.
Robert
--
Pengutronix - Linux Solutions for Science and Industry
Entwicklungszentrum Nord http://www.pengutronix.de
next prev parent reply other threads:[~2007-09-02 12:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-31 15:17 jitter bursts Robert Schwebel
2007-08-31 15:55 ` Girish kathalagiri
2007-09-01 9:15 ` Robert Schwebel
2007-09-05 8:14 ` Michael Olbrich
2007-09-05 8:36 ` Girish kathalagiri
2007-09-05 9:01 ` Michael Olbrich
2007-08-31 15:58 ` Bernhard Kuhn
2007-09-01 9:13 ` Robert Schwebel
2007-08-31 16:55 ` Sven-Thorsten Dietrich
2007-09-02 12:05 ` Robert Schwebel [this message]
[not found] ` <46D92C57.3090703@osadl.org>
2007-09-01 9:19 ` jitter bursts -> Not Found Robert Schwebel
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