RE: Linux and real device drivers

Bret Indrelee (breti@bit3.com)
Tue, 21 Sep 1999 15:09:37 -0500

Jes Sorensen asserts:
> Bret> If what you wanted is something like Sun's DDI/DKI, you should
> Bret> probably look at UDI. It provides a device driver interface that
> Bret> is portable among several operating systems. The prototype was
> Bret> done on Linux and Intel is doing the changes to make it
> Bret> compliant with 1.0 of the specification.
>
> Yes, UDI also guarantees you a trendous overhead and almost certainly
> lousy performance - last time I looked at the spec, about a year ago,
> it certainly wasn't pretty.

If this isn't just a case of you spreading FUD, could you please give some
data to back up your claims?

To my knowledge, no one has run benchmarks against the current UDI
definition. The original prototype was a little bit slower, but performance
changes were made to minimize or eliminate these areas.

-Bret

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