From owner-freebsd-net@FreeBSD.ORG Tue Apr 6 12:33:27 2004 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 576B016A4CF for ; Tue, 6 Apr 2004 12:33:27 -0700 (PDT) Received: from us.svf.stuba.sk (us.svf.stuba.sk [147.175.16.9]) by mx1.FreeBSD.org (Postfix) with ESMTP id B68CE43D54 for ; Tue, 6 Apr 2004 12:33:26 -0700 (PDT) (envelope-from md@us.svf.stuba.sk) Received: from us.svf.stuba.sk (localhost [127.0.0.1]) by us.svf.stuba.sk (8.12.11/8.12.11) with ESMTP id i36JVYjs024767; Tue, 6 Apr 2004 21:31:35 +0200 (CEST) (envelope-from md@us.svf.stuba.sk) Received: (from md@localhost) by us.svf.stuba.sk (8.12.11/8.12.11/Submit) id i36JVTRf024762; Tue, 6 Apr 2004 21:31:29 +0200 (CEST) (envelope-from md) Date: Tue, 6 Apr 2004 21:31:29 +0200 From: Marian Durkovic To: Mike Hunter Message-ID: <20040406193129.GA24515@us.svf.stuba.sk> References: <20040406180020.GA21071@ack.Berkeley.EDU> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040406180020.GA21071@ack.Berkeley.EDU> User-Agent: Mutt/1.4.1i X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on us.svf.stuba.sk cc: freebsd-net@freebsd.org Subject: Re: Broadcom BCM5788 jumbo frames? (FBSD 5.2.1) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Apr 2004 19:33:27 -0000 > While I have everybody's attention, what's a reasonable goal for > throughput between two of these cards? I broke through the 33mhz pci > barrier and am now getting iperf results of: Not sure about BCM chips, but good GE cards can do wire speed: Intel PRO/1000 - controller 82547EI integrated on motherboard ASUS P4C800-E (266 MByte/s CSA connection) Theoretical max: 941.482 Mbit/s TCP Window: 128 KB ./nttcp -T -n1000000 147.175.1.37 Bytes Real s CPU s Real-MBit/s CPU-MBit/s Calls Real-C/s CPU-C/s l-198967296 34.81 7.68 941.3511 4267.6174 1000000 28727.76 130237.3 1-198967296 34.81 5.00 941.3099 6557.3390 1114605 32018.70 223048.2 M. -------------------------------------------------------------------------- ---- ---- ---- Marian Durkovic network manager ---- ---- ---- ---- Slovak Technical University Tel: +421 2 524 51 301 ---- ---- Computer Centre, Nam. Slobody 17 Fax: +421 2 524 94 351 ---- ---- 812 43 Bratislava, Slovak Republic E-mail/sip: md@bts.sk ---- ---- ---- --------------------------------------------------------------------------