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Date:      Wed, 21 Mar 2001 09:23:36 -0800
From:      Alfred Perlstein <bright@wintelcom.net>
To:        Jan Conrad <conrad@th.physik.uni-bonn.de>
Cc:        Matt Dillon <dillon@earth.backplane.com>, Gordon Tetlow <gordont@bluemtn.net>, Rich Morin <rdm@cfcl.com>, freebsd-stable@FreeBSD.ORG
Subject:   Re: NFS performance
Message-ID:  <20010321092336.A12319@fw.wintelcom.net>
In-Reply-To: <Pine.BSF.4.33.0103211332070.1867-100000@merlin.th.physik.uni-bonn.de>; from conrad@th.physik.uni-bonn.de on Wed, Mar 21, 2001 at 02:43:15PM %2B0100
References:  <200103201911.f2KJBAR96066@earth.backplane.com> <Pine.BSF.4.33.0103211332070.1867-100000@merlin.th.physik.uni-bonn.de>

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* Jan Conrad <conrad@th.physik.uni-bonn.de> [010321 05:43] wrote:
> ok - to sum up a bit..
> 
> - for a good LAN, use UDP
> - use v3 (this is what I thought)
> - use standard data sizes
> 
> but still...
> 
> Our network connection between client and server is going directly over a
> BaySwitch 450 24T, all interfaces set to 100baseTX, half-duplex.
> So the LAN is good.
> We run 4 nfsd's and 4 nfsiods on each machine.
> 
> I did the mount as 'mount_nfs ....'
> Even so 'mount' does'nt show, I suppose I made a v3 mount (from the
> source code of mount_nfs).
> BTW, is there any way to figure that out?

When in doubt run tcpdump.  I really doubt that you're maxing out
at ~3MB/sec, I've done 11MB/sec on 100mb ether before.

> Do you know what actually determines the writing speed in a case like
> our's? Network or disk?

Y'know, it would be a hell of a lot easier to figure out what was
wrong if you showed us the mount flags you're using.



-- 
-Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org]


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