Date: Tue, 24 Sep 2002 07:59:53 -0500 From: Eric Anderson <anderson@centtech.com> To: Terry Lambert <tlambert2@mindspring.com> Cc: freebsd-chat@freebsd.org Subject: Re: FreeBSD NFS server using two NICs Message-ID: <3D9061C9.5050409@centtech.com> References: <3D8A3E52.2090202@centtech.com> <3D8A428B.B96FBE75@mindspring.com> <3D8A458B.2080608@centtech.com> <3D8A4B40.67C8E2A2@mindspring.com> <3D8F66AB.8020309@centtech.com> <3D8F8401.E77A5DA9@mindspring.com>
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Terry Lambert wrote: > Eric Anderson wrote: > >>Clients are UDP.. > > > UDP for NFS is evil. See the list archives for details. Unfortunately, I have several hundred RedHat 6.2 boxes that still need to access my NFS servers - and they use UDP. > >>Ok.. I'll give the read/write size shrinkage a try - Do you know what >>should work? mtu's from ifconfig show 1500 - that seems awefully small. > > > Make it all fit in one packet. I don't know what options, etc., > you are using. I would suggest 1K (1024), so that it will fit > in a single packet, even with some extra options set. > > 1500 is the standard MTU... if it looks small to you, you must > have some really whacked-out hardware... and it must violate the > ethernet standards. 8-). I meant the read/write size seems small to be set at 1500 or 1k. That would significantly reduce performance, correct? > > Feel free to switch to an 8K (8192) or large read/write size, > *IF you use TCP instead of UDP*. I think you are on to something here - I and using TCP only, and it's working fine using both interfaces. UDP strikes again! damn.. Eric -- ------------------------------------------------------------------ Eric Anderson Systems Administrator Centaur Technology The moon may be smaller than Earth, but it's further away. ------------------------------------------------------------------ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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