From owner-freebsd-questions@FreeBSD.ORG Mon Aug 2 04:31:11 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3D810106564A for ; Mon, 2 Aug 2010 04:31:11 +0000 (UTC) (envelope-from corsmith@gmail.com) Received: from mail-bw0-f54.google.com (mail-bw0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id C28708FC18 for ; Mon, 2 Aug 2010 04:31:10 +0000 (UTC) Received: by bwz12 with SMTP id 12so1871330bwz.13 for ; Sun, 01 Aug 2010 21:31:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=0Av924CiP5QEDixV6P14R0Yxcqphnmlhti85qhEkFOs=; b=YQmTgKUg5ie/y0Y60HUWng0s8zaXWyz/4kFrrF112BePl8QX0NyDRSx0nFlR6ScANE c6qeKbzl9ykGvMOj6G0UU+j5oUbjg0RL/eqIs/YA+JFowGPSJrJxVtyEwFUSuDWpSSFl /6Iy3h4PhGYzdCL2HYBgC9ptIva4H7oqn4txQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=GTrD7oK8gEZRumKR2mv8Gd5keJiTmPGo9Rf9Bn9Oe3ZHdlJfMIlnDCN/Suk+BXM6FD b1oJdRKmRvpm9VnjL4UFwVQejl+wmHkFoGnQOmHQz6xGk6O/BfZOTABVIiy42pdx8DrZ Hk/eRSRsQGm7BTxS9XgcnM49qVP5pV+AIR3Pc= MIME-Version: 1.0 Received: by 10.204.10.140 with SMTP id p12mr3786382bkp.58.1280723469260; Sun, 01 Aug 2010 21:31:09 -0700 (PDT) Received: by 10.204.163.17 with HTTP; Sun, 1 Aug 2010 21:31:09 -0700 (PDT) In-Reply-To: <8627B125-F3BB-42B2-98CF-600E21A93A2D@hiwaay.net> References: <4C55E4B5.7000201@speakeasy.net> <8627B125-F3BB-42B2-98CF-600E21A93A2D@hiwaay.net> Date: Mon, 2 Aug 2010 00:31:09 -0400 Message-ID: From: Corey Smith To: David Kelly Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-questions@freebsd.org, "Jason C. Wells" Subject: Re: Typical Network Performance X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Aug 2010 04:31:11 -0000 On Sun, Aug 1, 2010 at 7:30 PM, David Kelly wrote: > Gigabit ethernet from a 2.8 GHz P4 to or from MacPro I am only limited by disk data rate. About 60 MB/sec on one end of the disk, more on the other end of the disk. Did you try realtime monitoring your network interface? # route -n get interface: # netstat -I -w 1 Do you see errors on the interface? # netstat -I Another trick to eliminate disk io from the equation is to use nc: machine1 : # nc -o -l 2000 > /dev/null machine2: # dd if=/dev/zero bs=1M count=50 | nc machine1 2000 -Corey Smith