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From: "Ganael Laplanche" <ganael.laplanche@martymac.com>
To: freebsd-questions@freebsd.org
Date: Thu, 6 Jan 2005 16:50:05 +0000
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Subject: Asus K8N-E and slow disk transfer
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[This is a repost from the amd64 list]

Hi all,

I've just bought an ASUS K8N-E mobo. I'm using FreeBSD-5.3-Stable (amd64) and
suffering from *very* slow disk transfer rates. The chipset is an nforce3 and is
correctly detected at boot :

# dmesg
[...]
atapci0: <nVidia nForce3 Pro UDMA133 controller> port
0xffa0-0xffaf,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 8.0 on pci 0
[...]

My disk is an UDMA100 one, everything seems to be correct :
# atacontrol mode 0
Master = UDMA100
Slave  = BIOSPIO

# sysctl -a
[...]
hw.ata.atapi_dma: 1
hw.ata.ata_dma: 1
[...]

I use a new 80 lead ATA cable (shipped with my mobo)... Evrything should be
okay, but the whole system is very very slow. Copying a 600 MB takes about 10
minutes (1 MB/sec) and makes the system nearly unusable during the copy.

Do you have any idea ? 

Ganaël LAPLANCHE
ganael.laplanche@martymac.com
http://www.martymac.com
Tel : (+33)6.84.03.57.24.