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Date:      Mon, 9 Jun 2003 12:47:05 -0700
From:      Sean Chittenden <sean@chittenden.org>
To:        Eric Anderson <anderson@centtech.com>
Cc:        freebsd-performance@freebsd.org
Subject:   Re: Slow disk write speeds over network
Message-ID:  <20030609194705.GJ65470@perrin.int.nxad.com>
In-Reply-To: <3EE4E156.6030603@centtech.com>

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> Ok, I have a file server (NFS) running FreeBSD 4.8-RC1, which is having 
> incredibly slow disk write speeds.  Locally, doing something like:
> dd if=/dev/zero of=/partition/testfile
> Shows 14MB/s - which is what I expect..

Check your cabling... you may have a bad pair in your cable on your
send wires, or at least a crummy pair with high resistance.  See if
netstat -i has any errors listed.  A change in performance that
dramatic and only in one direction is disturbing and doesn't sound
like a kernel or software issue, though I could be quite wrong.

-sc

-- 
Sean Chittenden


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