From owner-freebsd-net@FreeBSD.ORG Wed Oct 11 17:54:38 2006 Return-Path: X-Original-To: freebsd-net@freebsd.org 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 5D69E16A40F for ; Wed, 11 Oct 2006 17:54:38 +0000 (UTC) (envelope-from jfvogel@gmail.com) Received: from py-out-1112.google.com (py-out-1112.google.com [64.233.166.177]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0186843D5D for ; Wed, 11 Oct 2006 17:52:29 +0000 (GMT) (envelope-from jfvogel@gmail.com) Received: by py-out-1112.google.com with SMTP id o67so278745pye for ; Wed, 11 Oct 2006 10:51:37 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=r5xjSb0Dwls7lwlpJ5LjiXNaG/zMkyquutaSgIP5pzv6AUanz4pl8scymzj+l8BeBcrxxEMJUXgwaBLH1AsBbHJK4dXP1t7sjNGmZvTSjn+XQflzy0QOi35TyBHxqH1/lv9JYDJPkbTPXtZxKDcrA2OSTsloaTyhetKi91k6z30= Received: by 10.35.89.10 with SMTP id r10mr1254549pyl; Wed, 11 Oct 2006 10:51:34 -0700 (PDT) Received: by 10.35.119.1 with HTTP; Wed, 11 Oct 2006 10:51:33 -0700 (PDT) Message-ID: <2a41acea0610111051r36ad7200gef868593e34c9331@mail.gmail.com> Date: Wed, 11 Oct 2006 10:51:33 -0700 From: "Jack Vogel" To: "Danny Braniss" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: Cc: freebsd-hackers@freebsd.org, freebsd-net@freebsd.org Subject: Re: em blues X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Oct 2006 17:54:38 -0000 On 10/11/06, Danny Braniss wrote: > the box is a bit old (Intel Pentium III (933.07-MHz 686-class CPU) > dual cpu. > > running iperf -c (receiving): > > freebsd-4.10 0.0-10.0 sec 936 MBytes 785 Mbits/sec > freebsd-5.4 0.0-10.0 sec 413 MBytes 346 Mbits/sec > freebsd.6.1 0.0-10.0 sec 366 MBytes 307 Mbits/sec > freebsd-6.2 0.0-10.0 sec 344 MBytes 289 Mbits/sec > > btw, iperf -s (xmitting) is slightly better > freebsd-4.10 0.0-10.0 sec 664 MBytes 558 Mbits/sec > freebsd-5.4 0.0-10.0 sec 390 MBytes 327 Mbits/sec > freebsd-6.1 0.0-10.0 sec 495 MBytes 415 Mbits/sec > freebsd-6.2 0.0-10.0 sec 487 MBytes 408 Mbits/sec > > so, it seems that as the release number increases, the em > throughput gets worse - or iperf is. You arent measuring em, you're measuring RELEASES on your hardware, is this a surprise on a P3, no. I still do 930ish Mb/s on a P4 with a PCI-E or PCI-X adaptors running 6.1, in fact can do that with a 4 port adaptor I believe. Regards, Jack