From owner-freebsd-performance@FreeBSD.ORG Mon Jan 19 06:19:16 2004 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 56F1F16A4CE; Mon, 19 Jan 2004 06:19:16 -0800 (PST) Received: from otter3.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id AA3B943D3F; Mon, 19 Jan 2004 06:19:14 -0800 (PST) (envelope-from anderson@centtech.com) Received: from centtech.com (neutrino.centtech.com [10.177.171.220]) by otter3.centtech.com (8.12.3/8.12.3) with ESMTP id i0JEJD6T099222; Mon, 19 Jan 2004 08:19:13 -0600 (CST) (envelope-from anderson@centtech.com) Message-ID: <400BE749.2030009@centtech.com> Date: Mon, 19 Jan 2004 08:18:49 -0600 From: Eric Anderson User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Willem Jan Withagen References: <003c01c3de8d$d569edb0$471b3dd4@dual> In-Reply-To: <003c01c3de8d$d569edb0$471b3dd4@dual> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit cc: performance@freebsd.org cc: current@freebsd.org Subject: Re: Old SUN NFS performance papers. X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Jan 2004 14:19:16 -0000 Willem Jan Withagen wrote: >Hi, > >I had no responses to my recent question on the difference between NFS over UDP >and TCP. So perhaps nobody cares?? > >So I tried searching but have not found much yet. >Does anybody know where to find the white papers SUN once wrote about tuning >NFS??? They should be at sun, but where?? >All other suggestions to read are welcomed as well. > >Given my last posting I'm building two machines to do some NFS benchmark testing >on. >Suggestions on what people "always wanted to know (tm)" are also welcom, and >I'll see if I can get them integrated. >I've found the benchmarks in /usr/ports, some might do so nice work as well. > >If people are interested I'll keep them posted in performance@ > I'm definitely interested in what you find. I run a few heavily used FreeBSD NFS servers, and therefore always looking for tweaks and nobs to turn to make things better. In my experience, UDP has always been faster than TCP on NFS performance. Prior to 5.2, I have also seen mbuf related issues (all pretty much solvable with the right sysctl's). Let me know if I can help. Eric -- ------------------------------------------------------------------ Eric Anderson Systems Administrator Centaur Technology All generalizations are false, including this one. ------------------------------------------------------------------