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Date:      Sat, 17 Feb 1996 12:43:12 -0700 (MST)
From:      Terry Lambert <terry@lambert.org>
To:        leo@rur.com (Leo Papandreou)
Cc:        jreynold@sedona.intel.com, questions@freebsd.org
Subject:   Re: SMP support?
Message-ID:  <199602171943.MAA09317@phaeton.artisoft.com>
In-Reply-To: <Pine.BSF.3.91.960217090810.25176A-100000@lisa.rur.com> from "Leo Papandreou" at Feb 17, 96 09:19:23 am

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> > I was just wondering if FreeBSD 2.1 currently supports SMP? 
> 
> Not quite there yet.
> 
> > If not, is this something that might happen in the 
> > near-to-not-so-near future?
> > 
> 
> Hope so. Would certainly sway some of the L-word juggernaut
> this way. (Hint, hint, kernel hackers and sundry C-Gods. Is
> it not time to mount a concerted effort? Entertain, if you
> will, the following 3 words uttered in the same breath: NT,
> Solaris, FreeBSD. Cool.)

I will send you patches; you will not be able to trigger the
buzz-flag to throw the second processor into the scheduler,
however.

The second processor LDT/GDT is incorrectly setup in my patch set;
I would be happy to have you fix it for me.

I either need more hardware (like an ICE I can plug into the
second processor slot), a significant amount of assembly that
I'm not going to write right now (basically a BSD version of
"SoftIce(tm)"), or to sit down and line-by-line analyze what
is getting set on which when and by who (which means I'd
probably dike out all the existing and uncommented debugger
and tracing code, a bad thing).  This last one might be a
reasonable thing, if we weren't in crunch-mode at work.  I
don't have time to "play computer", let alone "play SMP computer"
on 30+ sheets of engineering paper.  8-(.


Right now, I'm concentrating on kernel multithreading and file
system reentrancy, in specific.  It's all work that needs to be
done.


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.



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