From owner-freebsd-hackers@FreeBSD.ORG  Mon May  9 18:13:02 2005
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Date: Mon, 09 May 2005 11:12:18 -0700
From: Amandeep <aman@chamkila.org>
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Subject: Low HDD tranfer rate with FreeBSD 5.3-Release
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Hi all,

I am using Tyan S2098 MB with 160GB Maxtor ATA  Drive and the transfer 
rate is very low. FreeBSD 5.3-Release.
Any ideas what is going on here.

The transfer rate is about 15MB/s

when I run 

#dd if=/dev/zero of=/usr/junk bs=8192

then do
#iostat 1