From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2745 invoked by alias); 27 Sep 2002 12:03:00 -0000 Mailing-List: contact ecos-discuss-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@sources.redhat.com Received: (qmail 2737 invoked from network); 27 Sep 2002 12:02:59 -0000 Received: from unknown (HELO hermes.chez-thomas.org) (63.225.98.241) by sources.redhat.com with SMTP; 27 Sep 2002 12:02:59 -0000 Received: from localhost.localdomain (localhost [127.0.0.1]) by hermes.chez-thomas.org (Postfix) with ESMTP id 5F7AA235CC; Fri, 27 Sep 2002 06:02:59 -0600 (MDT) From: Gary Thomas To: Marc Pignat Cc: eCos Discussion In-Reply-To: References: Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Fri, 27 Sep 2002 05:08:00 -0000 Message-Id: <1033128179.14065.395.camel@hermes.chez-thomas.org> Mime-Version: 1.0 Subject: Re: [ECOS] TCP/IP problem X-SW-Source: 2002-09/txt/msg00473.txt.bz2 On Fri, 2002-09-27 at 00:13, Marc Pignat wrote: > > Have you noticed performance problem with tcp/ip ? > > When connected throught a switch, there is no problem and with a hub, a small amount of network traffic reduce the performance by a 10 factor... This is most likely a result of collisions. On a switch, each connections between endpoints is virtual - just like a single, private wire. On a hub, all connections share the same wire. The way that ethernet transmissions happen, there will always be collisions on shared transmission media. -- ------------------------------------------------------------ Gary Thomas | eCosCentric, Ltd. | +1 (970) 229-1963 | eCos & RedBoot experts gthomas@ecoscentric.com | http://www.ecoscentric.com/ | ------------------------------------------------------------ -- Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos and search the list archive: http://sources.redhat.com/ml/ecos-discuss