Date: Wed, 21 Mar 2001 18:27:47 +0100 (CET) From: Jan Conrad <conrad@th.physik.uni-bonn.de> To: Alfred Perlstein <bright@wintelcom.net> 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: <Pine.BSF.4.33.0103211824460.1867-100000@merlin.th.physik.uni-bonn.de> In-Reply-To: <20010321092336.A12319@fw.wintelcom.net>
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On Wed, 21 Mar 2001, Alfred Perlstein wrote:
> * 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.
client: einstein
server: merlin
client:
mount_nfs merlin:/freebsd/misc /mnt
'mount' gives:
merlin:/freebsd/misc on /mnt (nfs)
ifconfig fxp0:
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 131.220.161.127 netmask 0xfffffc00 broadcast 131.220.163.255
ether 00:90:27:1c:f3:79
media: 100baseTX status: active
supported media: autoselect 100baseTX <full-duplex> 100baseTX
10baseT/UTP <full-duplex> 10baseT/UTP
server:
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 131.220.161.121 netmask 0xfffffc00 broadcast 131.220.163.255
ether 00:02:b3:1f:f8:c5
media: 100baseTX status: active
supported media: autoselect 100baseTX <full-duplex> 100baseTX
10baseT/UTP <full-duplex> 10baseT/UTP
-Jan
>
>
>
>
--
Physikalisches Institut der Universitaet Bonn
Nussallee 12
D-53115 Bonn
GERMANY
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