Re: Miata, 6.1 and EIDE

[Dave Gilbert <gilbertd treblig org>]

On Mon, 27 Dec 1999, Praveen Srinivasan wrote:

> I don't know about Alphalinux, but I had a Promise Ultra66 controller in my x86
> machine with a Ultra66 capable HD, and the disk perfomance was pretty
> disappointing; it was about the same as the onboard IDE. People have speculated
> that the driver is at fault.

Yeh, on my LX board with an IBM 7200RPM 34GB Ultra 66 drive I get about
12MB/s off the CMD646 on board (19% CPU) and only got about 9MB/s off the
Promise.  I'm not sure what the problem is, but I can only presume it is
the driver? This presumption is based on:

   1) I presume someone somewhere has this controller running fast - or
they could never sell it???

   2) You are now saying you had the same problem on Intel, so it sounds
like it isn't an Alpharism.

(This was under Linux 2.3.14 a few months ago;  since it is my only
drive it is a pain for me now to try with the Promise on newer versions).

Dave


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