The performance increase numbers also vary depending on which OS you're
using, and how well that OS has been written to take advantage of multiple
processors. I'm willing to bet there would be very different numbers if you
compared the performance increase of going from 2 to 4 processors between
NT, Linux, Solaris and BeOS.
Josh
-----
"You can't help that...we're ALL mad here." -- Cheshire Cat
----- Original Message -----
From: "Judah McAuley" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, May 11, 2000 11:18 AM
Subject: RE: Processor Question
> At 12:42 PM 5/11/2000 -0400, you wrote:
> >Well with database more RAM is always better. Though on the list it has
been
> >posted many times that if you're going to get a multiprocessor do 2
> >computers with 2 processors instead of one 4 processor. Not only do you
get
> >clustering, but the performance increase of a 4 processor isn't much only
> >25% over a 2 processor where a 2 processor is 50% over a one processor.
> >
> >Robert Everland III
> >Web Developer
> >Dixon Ticonderoga
>
> I'm suspicious of those processesor increase numbers. I know that the
> performance increase isn't linear, but it should be a heck of a lot better
> than what's quoted above. I would also point out that cost may be a
> factor. Just comparing hardware prices, a 4 processor box and 2 two
> processor boxes may end up being comparable in price, but if you factor in
> hosting space costs, maintenance/management costs, and software licensing
> fees, then a 4 processor box starts to look attractive. Costs really
start
> to mount when you start looking at the licensing for Spectra ($15,000 per
> box up to 8 processors).
>
> Judah
>
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