Date: Mon, 2 Feb 2004 10:05:00 +0100 From: Jacques Beigbeder <Jacques.Beigbeder@ens.fr> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-questions@freebsd.org Subject: Re: NFS performances on 5.1 Message-ID: <20040202090500.GA1656@trefle.ens.fr>
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>> > On a same Ethernet 100 LAN, I have several Unix and >> > an NFS Solaris fileserver. On these Unix, I tried: >> > time dd=/fileserver/aFile of=/fileserver/otherFile bs=32768 >> > On each try, I use new files, to avoid the impact of file caching. >> > >> > I measured the time spent and the number of Ethernet packets (with snoop). >> > I found: >> > >> > NFS client time # pkts >> > =============== ======= ====== >> > Solaris 3.11s 2296 >> > Linux Redhat9 2.42s 1929 >> > FreeBSD 5.1 19.72s 14887 <!!! >> > FreeBSD 4.9 3.04s 6380 >> > FreeBSD 5.2 2.98s 5941 >> >> The best way to tune 5.1 is to update it to 5.2 (I'm sure you read all >> the documentation that states that the 5.x branch is a new technology >> release with performance not being an initial goal). Of course, but I have 60+ stations tu upgrade... >> However, those >> numbers still look excessive, so I wonder if you forgot to turn off >> some of the debugging options like WITNESS. I have the kernel from the distribution. -- Jacques Beigbeder | Jacques.Beigbeder@ens.fr Service de Prestations Informatiques | http://www.spi.ens.fr Ecole normale supérieure | 45 rue d'Ulm |Tel : (+33 1)1 44 32 37 96 F75230 Paris cedex 05 |Fax : (+33 1)1 44 32 20 75
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