From owner-freebsd-stable Tue Mar 20 11: 1: 2 2001 Delivered-To: freebsd-stable@freebsd.org Received: from earth.backplane.com (earth-nat-cw.backplane.com [208.161.114.67]) by hub.freebsd.org (Postfix) with ESMTP id BADC537B719 for ; Tue, 20 Mar 2001 11:00:59 -0800 (PST) (envelope-from dillon@earth.backplane.com) Received: (from dillon@localhost) by earth.backplane.com (8.11.2/8.9.3) id f2KJ0n195878; Tue, 20 Mar 2001 11:00:49 -0800 (PST) (envelope-from dillon) Date: Tue, 20 Mar 2001 11:00:49 -0800 (PST) From: Matt Dillon Message-Id: <200103201900.f2KJ0n195878@earth.backplane.com> To: Gordon Tetlow Cc: Jan Conrad , Subject: Re: NFS performance References: Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Putting on my NFS hat... I would not recommend NFSv2 to anyone. Everyone should be using NFSv3 at this point. It just does a much better job at everything, including and most especially at writing. TCP mounts are useful, and much safer, if you need to export NFS across a firewall. Otherwise I'd recommend sticking with UDP. -Matt :On Tue, 20 Mar 2001, Jan Conrad wrote: : :> We're making plans to upgrade our NFS server to FreeBSD-4.3 (including :> new disks...) and I would like to ask about the status of NFS v3? : :Why do you need NFSv3? Are there particular features in NFSv3 that you :need or are you just guessing that v2 > v3 and therefore better? : :> Currently, a standard NFS mount (4.3BETA) gives us a sequential writing :> speed of approx. 2Mb/s (just 400Mb dd'd data, IBM DTLA-307045 with :> softupdates) and reading speed of 9Mb/s (the maximum). : :What is the speed of your network? : :> Mounting via TCP gives us 2.5Mb/s. (Is this safe?) : :Why are you using TCP? If you are on a reliable LAN, use UDP. TCP should :be used for long haul NFS. There are lots of reasons for using UDP, if you :want me to go into them, I will. : :> Are there any other possibilities to increase the writing speed (by means :> of tuning NFS...)? : :Again, try UDP. Also, go pick up the O'Reilly book on NFS and NIS. Alot of :what I'm going to tell you is in there (indeed the book is on my desk at :work). : :-gordon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message