Subject: Re: NFS server problems on sparc/sparc64?
To: Manuel Bouyer <firstname.lastname@example.org>
From: Hauke Fath <email@example.com>
Date: 11/29/2007 10:21:09
At 22:59 Uhr +0100 28.11.2007, Manuel Bouyer wrote:
>> NFS over UDP works very badly if the NFS server is faster than the client
>> or has faster networking. My NetBSD-i386 NFS server (1Gb/s ethernet)
>> managed to make my SPARCstation LX NFS client (10Mb/s ethernet) very
>> unhappy until I switched to NFS over TCP.
>In my case, the NFS server is much slower than the client, and I suspect
>it's the condition to reproduce it.
TCP mounts here, clients and server are of the same machine class
(i386 P4 / AMD Athlon, all netbsd-3), and I still see the occasional
stalls as well as the "...not responding / is alive again" noise:
[hf@Sagran] ~ > w
10:16AM up 12 days, 16:35, 2 users, load averages: 0.55, 0.37, 0.33
USER TTY FROM LOGIN@ IDLE WHAT
sarmadi :0 - 19Nov07 ? /bin/sh /usr/pkg/bin
hf pts/2 dachstein.nt.e-technik.tu- 10:15AM 0 w
[hf@Sagran] ~ > dmesg | grep -E "(not responding|is alive)" | wc -l
[hf@Sagran] ~ >
i386 Debian 4 clients exhibit stalls too, so I'd suspect the NetBSD
nfs server implementation as the common cause...
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