Date: Wed, 21 Mar 2001 22:41:36 -0800 From: "Ted Mittelstaedt" <tedm@toybox.placo.com> To: "Hartmann, O." <ohartman@klima.physik.uni-mainz.de>, <freebsd-questions@FreeBSD.ORG> Subject: RE: NFS performance tweaking Message-ID: <003501c0b29b$24982680$1401a8c0@tedm.placo.com> In-Reply-To: <Pine.BSF.4.33.0103222153060.15656-100000@mail.physik.uni-mainz.de>
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IMHO, most NFS tweaking is effective only for the older NFS UDP protocol. If your NFS clients are in the 21st century they will be using TCP and in theory uou won't have to deal with these problems. I've also found from experience that the network adapter matters greatly. Years ago when I first started playing with NFS I had all kinds of funny speeds, and then one day I replaced the network adapters in all of the systems participating with NFS with SMC8013 cards, and suddennly speed was really good in all instances. Of course this is all 10BaseT ISA stuff, I'd be interested in anyone's experiences with more modern 100BaseT PCI cards. Ted Mittelstaedt tedm@toybox.placo.com Author of: The FreeBSD Corporate Networker's Guide Book website: http://www.freebsd-corp-net-guide.com >-----Original Message----- >From: owner-freebsd-questions@FreeBSD.ORG >[mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Hartmann, O. >Sent: Thursday, March 22, 2001 12:54 PM >To: freebsd-questions@FreeBSD.ORG >Subject: NFS performance tweaking > > > >Dear Sirs. > >Our main NFS server fails very often in serving fast enough its >services and on several clients I get the message "nfs server not >responding", later "... live again". > >Sometimes the server is really under heavy loead, sometimes not. >I think it is a task of "tweaking", I saw a lot of stuff in the kernel >and via sysctl -A in the kernel paramameters. > >Does anyone has a suitable hint waht to set for these parameters >(prefereable in the kernel ...)? > >Thanks a lot ... > >Oliver > >-- >MfG >O. Hartmann > >ohartman@klima.physik.uni-mainz.de >---------------------------------------------------------------- >IT-Administration des Institut fuer Physik der Atmosphaere (IPA) >---------------------------------------------------------------- >Johannes Gutenberg Universitaet Mainz >Becherweg 21 >55099 Mainz > >Tel: +496131/3924662 (Maschinensaal) >Tel: +496131/3924144 >FAX: +496131/3923532 > >-- >MfG >O. Hartmann > >ohartman@klima.physik.uni-mainz.de >---------------------------------------------------------------- >IT-Administration des Institut fuer Physik der Atmosphaere (IPA) >---------------------------------------------------------------- >Johannes Gutenberg Universitaet Mainz >Becherweg 21 >55099 Mainz > >Tel: +496131/3924662 (Maschinensaal) >Tel: +496131/3924144 >FAX: +496131/3923532 > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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