From owner-freebsd-current@FreeBSD.ORG  Fri Jul  9 23:49:09 2004
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Date: Sat, 10 Jul 2004 01:49:09 +0200 (CEST)
From: =?iso-8859-1?q?Claus=20Guttesen?= <cguttesen@yahoo.dk>
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Subject: nfs-server twice as fast written to as read from
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Hi.

Is testing a nfs-server with current as of July 9'th.
While copying to and from the server to two different
hosts, I noticed that copying _to_ the server was
twice as fast as copying _from_ the server. This was
regardless of which host I tested from.

Is using tcp, r/w-size 65536 on client, server:

net.inet.tcp.sendspace: 65536
net.inet.tcp.recvspace: 65536

All hosts are on 100 Mbit/s.

It takes 5 min. 30 sec. copying 3 GB to, 11 min. 43
sec. from the nfs-server. Is there a penalty reading
from the server in relation to nfs?

regards
Claus


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