From owner-freebsd-questions@FreeBSD.ORG Sun Aug 1 22:03:51 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 0A76C106564A for ; Sun, 1 Aug 2010 22:03:51 +0000 (UTC) (envelope-from gull@gull.us) Received: from mail4.sea5.speakeasy.net (mail4.sea5.speakeasy.net [69.17.117.48]) by mx1.freebsd.org (Postfix) with ESMTP id D944B8FC19 for ; Sun, 1 Aug 2010 22:03:50 +0000 (UTC) Received: (qmail 10382 invoked from network); 1 Aug 2010 22:03:50 -0000 Received: from dsl081-163-112.sea1.dsl.speakeasy.net (HELO ringbill.gull.us) ([64.81.163.112]) (envelope-sender ) by mail4.sea5.speakeasy.net (qmail-ldap-1.03) with AES256-SHA encrypted SMTP for ; 1 Aug 2010 22:03:50 -0000 Received: from alphonse ([192.168.10.9] helo=alphonse.gull.us) by ringbill.gull.us with esmtpa (Exim 4.71 (FreeBSD)) (envelope-from ) id 1OfgdJ-0004LN-V6 for freebsd-questions@freebsd.org; Sun, 01 Aug 2010 15:03:49 -0700 Message-Id: From: David Brodbeck To: FreeBSD Questions In-Reply-To: <4C55E4B5.7000201@speakeasy.net> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v936) Date: Sun, 1 Aug 2010 15:03:49 -0700 References: <4C55E4B5.7000201@speakeasy.net> X-Mailer: Apple Mail (2.936) 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: Sun, 01 Aug 2010 22:03:51 -0000 On Aug 1, 2010, at 2:18 PM, Jason C. Wells wrote: > I have a 100 mbps (12,207 KiB/s) home LAN in full-duplex. A 1 MiB > file transfers at 146.7 KiB/s via wput. The same file transfers at > 91.34 KiB/s via samba. That's less than 1% of available transfer > rate. Seems like my transfers are slow. I do better than that when > installing via the internet. > > Does the FTP performance compared to available bandwidth seem > right? Is the relative performance of samba to FTP right? I read a > couple quick links on the net which said, "It's complicated." Those figures do seem a little low. Some stuff to check: Are transfers in one direction a lot faster than transfers in the other? If so, the machines and the network switch may not all be agreeing on the duplex mode. Auto-negotiation sometimes fails and can lead to a lot of silent collisions, slowing things down dramatically. How about the disk you're transferring from? Is it limiting the speed? Those figures would be fairly normal for a USB 1.0 drive, for example. Are you sure all the machines involved are operating at 100 mbps? I've seen them silently fall back to 10 when there's a bad cable involved.