nfs write performance with a Solaris server

Thomas Pornin (bip@orion.ens.fr)
Sun, 31 May 1998 22:56:35 +0200


Hello,

I experience performance problems when using nfs with a Linux/Alpha box
as client, and a Solaris server. Reading is perfect (1.1 MB/s on the
10baseT ethernet) but writing is slow (~200 KB/s). A Solaris client on
the same ethernet, with the same server, gets reasonnable figures
(~900 KB/s both reading and writing). rsize and wsize are set to 8192.

I have root access to the client (a RedHat 5.1 Linux box, using kernel
2.1.103, and a Tulip PCI ethernet card). I already experienced such
bad performance with Solaris servers and Linux clients, but this is the
first time I have the occasion to perform some tcpdump on one of the
machines.

So, please developpers give me the few magic commands that I could run
and that would provide you all the information needed to speed things up.

--Thomas Pornin

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