On Thu, Jul 08, 2004 at 03:00:37PM +0200, Peter Bex wrote:
> Hey all,
> 
> I've just set up an NFS/NIS server and client on a LAN.  It all seems to
> work, I can login on the client using accounts from NIS, I can mount all
> disks I want to mount from the server, I can request directory listings
> from the NFS volumes, but when I start doing some heavy file I/O over NFS
> (like extracting a tar.gz file), the client seems to go numb.
> 
> All network traffic slows down to an (almost) halt, I can ^C the pkgsrc
> thing, but after that every request to the server is slow as hell.
> If I start an SSH session with a chatclient, I can see new messages, but
> I can't type anything at all.  If I type in something, after approximately
> 2 minutes I see the characters I typed show up.  This seems to point to
> a problem with network sending, while receiving works OK.  (either that,
> or the server can't receive like it should but can send)
> 
> Trying to unmount the NFS volumes goes extremely slowly as well, taking
> something like 10 minutes to unmount a volume.
> At the server, everything works smoothly, which I can see when I hook up
> a monitor and keyboard to it.
> 
> There's nothing in /var/log/messages on either client or server.
> Sometimes, I do get the message that the server has died, and following
> that, that it is alive again.  That's all.
> 
> The network hardware seems to be working, since I can send/receive files
> quickly enough over FTP (a few Mb/sec) when I'm not using NFS.
> 
> Someone have any idea what I can be doing wrong?

Could be a duplex setting mismatch between host and switch, on the
client or server side. Check this.

Also, it would help to have more info about your hardware.

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--