*BSD News Article 58255


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From: cracauer@wavehh.hanse.de (Martin Cracauer)
Subject: Re: nfs speed question
Message-ID: <1995Dec27.165030.3456@wavehh.hanse.de>
Organization: BSD User Group Hamburg
References: <4blte0$8c2@rzsun02.rrz.uni-hamburg.de>
Date: Wed, 27 Dec 95 16:50:30 GMT
Lines: 44

1aussem@rzdspc1.informatik.uni-hamburg.de (Ralph-Thomas Aussem) writes:


>I setup several FreeBSD 2.1 systems connected with tcp/ip over ethernet
>(ne2000 compatible cards). 
>The server is a Pentiun 100Mhz with a Quantum fireball 1G harddisk.
>I got nearly 200kb/s over nfs (mounted with -T,-l,-q,-b,-i,-s,-k as
>option mount_nfs).  If I mounted the drive to two different host
>with nfs the speed goes down to 100kb/s.

>Is there a possibility to increase the speed ? 

First of all: Everyone will tell you to exchange the ne2000
card. Wrong. You can fill the ethernet with your ne2000 cards easily
and the FreeBSD driver will not take up more than a few CPU %.

Serving an SGI Indy client, I get 650 MB/sec read and ~/180 KB/sec
write(sync) with a P90/triton/ne2000/NCR/barracouda.

You didn't provide enough data to help you.

Are you sure your problem is not an overloaded ethernet? Or some bogus
routers? At uni-hamburg the latter is *possible*. Use a plain wire
between the boxes to check.

What is your client machine?

What is the speed of you hard drive and controller? Use bonnie to test
for it.

What do you use to get your performance numbers? I use the disk
benchmark "bonnie". Are you sure your test is not limited by - say -
the client's hard drive because your test is writing to it?

What are these numbers for anyway? Which direction?

Don't use Quantum fireball harddisks...

Martin
-- 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <cracauer@wavehh.hanse.de>  -  Fax +49 40 522 85 36
 BSD User Group Hamburg, Germany   -   No NeXTMail anymore, please.
 Copyright 1995. Redistribution via Microsoft Network is prohibited