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Date:      Tue, 3 Apr 2001 09:05:55 -0400 
From:      "Gray, David" <David_W_Gray@tvratings.com>
To:        "'FreeBSD mobile list'" <freebsd-mobile@freebsd.org>
Subject:   Dumb question
Message-ID:  <01D4D419B1A4D111A30400805FE65B13070AC274@nmrusdunsx1.nielsenmedia.com>

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I'm running 4.2R on a Toshiba Tecra 750CDT. The problem is, it doesn't
get along with the ATA driver. The problem is kinda strange. If you are 
just doing a straight read or write to the disk (dd if=/dev/zero
of=/randomfile)
its good for several MB/sec. If you are doing anything 'complicated', it 
seems like the disk is continuously re-calibrating itself. You can hear
it doing full disk seeks, several times a second, making the composite 
speed a few kb/sec. Compiling a kernel, for example, is very painful.

There is a workaround. The wd driver works just fine, but the problem is 
its due for the axe, which means my laptop's life ends at 4.2 (or 4.3,
whenever it goes.) Wierdly, I *have* the ATA driver compiled in (I needed
it to read the flashcard from my camera), and this actually works (hey,
I'm impressed.) But the question is, has anything like this been seen 
recently?

dmesg output is available on demand... (I'm at work, it isn't) (Since i'd
have 
to boot remotely, anybody know what I'd have to put where to get a verbose
boot,
without going home to babysit?)

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