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Date:      Sat, 21 Jul 2007 10:12:19 -0500
From:      Tim Daneliuk <tundra@tundraware.com>
To:        FreeBSD Mailing List <freebsd-questions@freebsd.org>
Subject:   SATA 300 Drive Being Run At 150
Message-ID:  <46A22253.8080100@tundraware.com>

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I asked this question a while back, but needed to do more digging to make
sure I had latest sources etc.

I have an Intel motherboard that shows this for a SATA controller:

atapci1: <Intel ICH7 SATA300 controller> port 
0x20c8-0x20cf,0x20ec-0x20ef,0x20c0-0x20c7,0x20e8-0x20eb,0x20a0-0x20af mem 
0x90204000-0x902043ff irq 19 at device 31.2 on pci0

But the hard drive - a SATA 300 device - shows up like this:

ad4: 238475MB <WDC WD2500JS-00NCB1 10.02E02> at ata2-master SATA150
                                                             ^^^^^^^

Using dd, I have confirmed that the drive is running nowhere near
SATA-III speeds, at least on reads:

968470075 bytes transferred in 7.132891 secs (135775249 bytes/sec)

This is on a 6.2-Stable system that is very lightly loaded...

-- 
----------------------------------------------------------------------------
Tim Daneliuk     tundra@tundraware.com
PGP Key:         http://www.tundraware.com/PGP/




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