NFS performances on 5.1

[Jacques Beigbeder]

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

All FreeBSD uses: mount_nfs -U -3 -r 32768 -w 32768 ...

Question: is there any tuning on 5.1 to get better performances?

--
Jacques Beigbeder                    |  Jacques.Beigbeder at ens.fr
Service de Prestations Informatiques |     http://www.spi.ens.fr
Ecole normale supérieure             |
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