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Date:      27 Apr 2002 15:01:08 -0000
From:      atk2@arctic.org
To:        freebsd-hardware@freebsd.org
Subject:   Re: UDMA performance suggestionsRe: Athlon XP with N
Message-ID:  <20020427150108.21862.qmail@twinlark.arctic.org>

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I'll get the output from dmesg tomorrow. Er the machine isn't on the
net yet -- so i have to go home and copy it to a floppy and then email
it to the list...

As I noted a few minutes ago I am getting 10MB/S doing 

dd if=/dev/xxx bs=8192 of=/dev/null
(i use ioctl -c 100 to watch the rate)

I should get 20 to 25 MB /S so I think it is using dma 2 instead of
dma 5 (it supports dma 6 but freebsd doesn't - yet).

(er the 10MB/s is substained not from drive cache).

Alan

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