Date: Wed, 30 Aug 2006 12:51:52 +0200 From: "Claus Guttesen" <kometen@gmail.com> To: "Danny Braniss" <danny@cs.huji.ac.il> Cc: freebsd-net@freebsd.org, freebsd-stable@freebsd.org Subject: Re: tcp/udp performance Message-ID: <b41c75520608300351h4dcdfc4aucee010481de11b21@mail.gmail.com> In-Reply-To: <E1GIMNJ-0000Dd-QH@cs1.cs.huji.ac.il> References: <E1GIMNJ-0000Dd-QH@cs1.cs.huji.ac.il>
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> test 1: writing to a NetApp filer via NFS/UDP > FreeBSD Linux > MegaBytes/sec > 1- Average: 18.48 32.61 > 2- Average: 15.69 35.72 > 3- Average: 16.61 29.69 > (interstingly, doing NFS/TCP instead of NFS/UDP shows an increase in speed of > around 60% on FreeBSD but none on Linux) I've always used tcp when doing nfs between my (former) FreeBSD 5.3 fileserver and my FreeBSD 6.x webservers. I increased the read- and write-packetsize to 32768 and achieved the best performance using this packetsize and tcp. Using udp sometimes gave me the "server not responding", but never appeared using tcp. So stick to tcp. regards Claus
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