Albert D. Cahalan writes:
> Digital UNIX (now Tru64, was OSF/1) uses self-modifying code to
> create a generic kernel that can do, if I remember right:
>
> 1. plain
> 2. real-time
> 3. SMP
> 4. real-time SMP
> 5. lock debugging
I have a Digital UNIX box on my desk and admin several Digital UNIX
boxes in my job. It is not too horrible, but I would not hold it up as
a shining example of a system that can do realtime work. It wasn't
until recently that I didn't have to wait through multi-second freezeups
on my box whenever I did large amounts of file I/O. I'm not sure they
really fixed the problem as much as painted it over in more recent
Digital UNIX versions.
I don't think any sane person would want to maintain whatever
self-modifying code tricks that Digital UNIX might use to accomplish
this fabled feat. And did I mention that the Digital UNIX kernel is a
massive 8 megabytes _after_ you prune out most of the optional features?
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This archive was generated by hypermail 2b29 : Fri Jul 07 2000 - 21:00:14 EST