Re: CISC/RISC Performance Problem Solution -- BIG DUHHHHH!

["Steven Easton Mail" <seaston@xxxxxxxxx>]

Dean

Maybe you could write your application  so that 4 jobs could be running at
the same time processing your data, thereby utilizing all 4 processors.


Steven Easton 
seaston@ionet.net
Midrange Systems Design
http://www.ionet.net/virtual/dpma/
Century Martial Art Supply
http://www.centuryma.com/

----------
> From: DAsmussen@aol.com
> To: midrange-l@midrange.com
> Subject: CISC/RISC Performance Problem Solution -- BIG DUHHHHH!
> Date: Monday, August 11, 1997 4:59 PM
> 
> Hey Folks,
> 
> As you may recall from our last episode, our development box was changed
from
> a two-way 310 to a 4-way 320.  We had programs that were once taking
close to
> 50% of the CPU change to taking less than 20% of the CPU and could not
> increase that allocation despite our best efforts on priority and
timeslice.
>  We do not have SMP installed.
> 
> For those of you (like myself initially) that haven't already figured out
the
> math, a non-SMP job runs on only ONE processor.  Ergo, 50% CPU
utilization is
> the best that can be hoped for on a 2-way box, 25% on a 4-way.  Did I
receive
> this revelation from the list?  No, but the Dynamic Priority Scheduler
(among
> other) info was a BIG help on the RISC.  Did I get this information from
IBM?
>  No, but they were very sympathetic.  Actually, a new consultant that had
> just come off a /400 data warehousing research assignment was the source.
>  Sometimes, the answer is right in front of you but you don't see it...
> 
> Regards,
> 
> Dean Asmussen
> Enterprise Systems Consulting, Inc.
> Fuquay-Varina, NC  USA
> E-Mail:  DAsmussen@AOL.COM
> 
> "Never doubt that a small group of concerned citizens can change the
world.
>  Indeed, it is the only thing that ever has." -- Margaret Mead (on the
cover
> of the adopt-a-manatee literature)
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