Lizette, thanks, you're always helpful. Answers in line below.

Charles

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of Lizette Koehler
Sent: Tuesday, July 17, 2012 7:59 AM
To: [email protected]
Subject: Re: Help with elementary CPU speed question

> If you have access to the MXG software, search in SOURCLIB for this
information.  Dr. Merrill's book which is in this library can be very
helpful.

I don't have MXG. I have the IBM performance tables
https://www-304.ibm.com/servers/resourcelink/lib03060.nsf/pages/srmindex.
That's where I got the SU/second numbers in my OP. My question really was
whether the SU/Second machine-to-machine ratio was the first factor to be
looking at, and was I using them correctly, and I guess that is so because
no one has said it is not. (It's just that beyond that, "it depends.")

> Second, what is meant by CPU Performance question?

The question distilled to its essence is "if job X takes n CPU seconds on
box A, then will box B have enough horsepower to run 1000 jobs very much
like X every day, and how much CPU time will they use?"

> There is not, imho, not a one answer to a general question.  It will
depend on hardware, software and user perception.

Yup. But management wants (IMHO understandably) a go or no-go answer.

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