RE: Compute Intensive Workload

["Justin C. Haase" <JHaase@xxxxxxxxxxxxx>]

If you're looking at java/websphere, something to look at is not only
level-2 cache but the actual speed of the processor in MHz.

I've seen a 270 with 1070 CPW blow the doors off a 740 with 4550 CPW with a
websphere app.  Also, be sure to include disk arms.  With the newer PCI-X
controllers there is less need for the monstrous amount of arms previously
required. 

But - as I mentioned above, with websphere, processor MHz (and existence of
L2 cache) actually seems to make a world of difference as compared with CPW.

Justin C. Haase
Sr. Technical Support Specialist - OutLink
Jack Henry and Associates - Allen, TX
www.jackhenry.com


-----Original Message-----
From: Mike.Crump@xxxxxxxxxxxxxxxx [mailto:Mike.Crump@xxxxxxxxxxxxxxxx] 
Sent: Thursday, August 07, 2003 10:56 AM
To: midrange-l@xxxxxxxxxxxx
Subject: Compute Intensive Workload


I apologize in advance for sounding ignorant.  :-)  I swear I've seen a
presentation (maybe at Common) or information somewhere that talks about a
compute intensive workload rating for the iSeries.  My problem is that on
some of my machines CPW is possibly very misleading.  I have systems that
are relatively normal and CPW does a good job of predicting performance
changes (thankfully it is slightly conservative) when I do upgrades.
However, I have a machine that is probably 50% database activity and 50%
compute intensive (ESSBASE, Domino, Websphere, etc.).  I'm reviewing a
potential upgrade and trying to come to grips with what I think the change
will be....

Did I make up the Compute Intensive Workload?  Or is that some of the Domino
measurements?  What do other people do when they look at iSeries machines
that are not doing traditional functions?


Michael Crump
Saint-Gobain Containers
1509 S. Macedonia Ave.
Muncie, IN  47302
(765)741-7696
(765)741-7012 f
(800)428-8642

"The only thing necessary for the triumph of evil is for good men to do
nothing."  Edmond Burke






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