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Date:      Thu, 11 May 2000 16:33:13 -0700
From:      Mike Smith <msmith@freebsd.org>
To:        "Mitch Vincent" <mitch@venux.net>
Cc:        "Chris Phillips" <chris@selkie.org>, freebsd-questions@FreeBSD.ORG
Subject:   Re: FreeBSD SMP 
Message-ID:  <200005112333.QAA01911@mass.cdrom.com>
In-Reply-To: Your message of "Thu, 11 May 2000 16:40:57 EDT." <001d01bfbb89$36965a00$0300000a@doot.org> 

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> Oh, one more thing..
> 
> Why would I need XEON processors? The only differenced between those and
> other PIII's is the full speed cache (and more of it usually), right?

You can't run more than two PII or PIII processors in a system.

> *shrug* not really sure. The motherboards say they support PIII/XEON, so I
> was wondering what your logic was behind what you said.

"PIII/Xeon" means "Pentium-III Xeon processor", not "PIII or Xeon 
processors".

> As far as the database using all 4 processors, any threaded program *could*
> use them, couldn't they?

Not unless it's designed to do so.  I don't believe that Postgres is/does.

> *shrug* I'm a total newbie with multi-processor systems, I've never had
> anything big enough to need one so some of what I said could be totaly
> wrong.. Please, feel free to school me :-)

Buy something smaller.  Benchmark your application, and determine what 
your performance requirements are.  Make appropriate purchasing decisions 
based on quantifiable results.

-- 
\\ Give a man a fish, and you feed him for a day. \\  Mike Smith
\\ Tell him he should learn how to fish himself,  \\  msmith@freebsd.org
\\ and he'll hate you for a lifetime.             \\  msmith@cdrom.com




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