From owner-freebsd-net@FreeBSD.ORG Mon Apr 12 08:01:53 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 3726716A4D1 for ; Mon, 12 Apr 2004 08:01:53 -0700 (PDT) Received: from mail-in-05.arcor-online.net (mail-in-05.arcor-online.net [151.189.21.45]) by mx1.FreeBSD.org (Postfix) with ESMTP id DB8CF43D3F for ; Mon, 12 Apr 2004 08:01:52 -0700 (PDT) (envelope-from naddy@mips.inka.de) Received: from kemoauc.mips.inka.de (dsl-082-082-078-046.arcor-ip.net [82.82.78.46]) by mail-in-05.arcor-online.net (Postfix) with ESMTP id 6E08BA65E6F for ; Mon, 12 Apr 2004 17:01:51 +0200 (CEST) Received: from kemoauc.mips.inka.de (localhost [127.0.0.1]) by kemoauc.mips.inka.de (8.12.11/8.12.10) with ESMTP id i3CF1oCS053065 for ; Mon, 12 Apr 2004 17:01:50 +0200 (CEST) (envelope-from naddy@kemoauc.mips.inka.de) Received: (from naddy@localhost) by kemoauc.mips.inka.de (8.12.11/8.12.11/Submit) id i3CF1onk053064 for freebsd-net@FreeBSD.org; Mon, 12 Apr 2004 17:01:50 +0200 (CEST) (envelope-from naddy) Date: Mon, 12 Apr 2004 17:01:50 +0200 From: Christian Weisgerber To: freebsd-net@FreeBSD.org Message-ID: <20040412150150.GA52818@kemoauc.mips.inka.de> References: <20040412144221.GA1420@ip.net.ua> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040412144221.GA1420@ip.net.ua> User-Agent: Mutt/1.4.2.1i Subject: Re: re(4): puzzling netperf result 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: Mon, 12 Apr 2004 15:01:53 -0000 Ruslan Ermilov: > > How does the machine get the idea it is pushing 200 Mbit/s down a > > 100 Mbit/s link? > > Does ``netstat -I re0 -w 1'' show the same numbers while you're > running the UDP_STREAM test? Yes, it does (~26000000 bytes). I have two further GigE-equipped OpenBSD boxes on the LAN and they top out at a plausible ~95Mbit/s when UDP streaming to the same target. However, netperf also reports a large number of errors (dropped packets?) in their case--but actual netstat interface figures again concur with the throughput. Alas, I have no further FreeBSD boxes to test this. -- Christian "naddy" Weisgerber naddy@mips.inka.de