Re: poor nfs performance

[Bill Hawes]

Thomas Pornin wrote:
> I made some performance tests with nfs on a Linux 2.1.66 PC. I found the
> following: if the server is a Sun under Solaris, a Linux client is much
> slower than a SunOS or Solaris client. Reading is ok, but writing does not
> go above 150 KB/s, whereas a SunOS client will do 300 KB/s and a Solaris one
> will get close to 900 KB/s (all this is over a standard ethernet network).
> 
> If the server is a knfsd on a Linux machine, all is ok (reading and writing
> at top speed). Is there anything I did wrong, or is the Linux nfs
> implementation too Linux-specific ? In short, what can I do about it ?

I'm not sure why you're seeing a server-specific difference in
performance. Have you experimented with the mount-time rsize and wsize?

The Linux NFS client doesn't have any special tricks for talking to a
Linux server; it's intended to work well with any server.

One thing you might try is to monitor the network and look for
differences in the Sun-Sun vs Linux-Sun packets.

Regards,
Bill