Tom Beretvas used to have a saying the answer to all DASD performance
problems was "More Cache!". Now he said that tongue in cheek and then
illustrated that there was some truth in it and of course it was not
always the answer.
So in the same vein if you want to say "More Memory!" is the answer to
all performance problems I will agree:-) I like memory. It is the
cheapest thing I can buy to improve performance. It is of course part
of a balanced solution but the millions of dollars people will spend on
processors and then try to save a few gigabytes of memory and allow
those precious processors to spend cycles doing paging or allow
applications to incur delays due to wait for I/O that is easily avoided
boggles me.
Memory is cheap relative to other System z resources you can buy.
Today's 2094 is not your old 4381 just faster. When you can combine
current IBM operating system z/OS, current subsystems DB2, MQ, IMS, and
current balanced hardware solutions z9 and DS8300 the sum is greater
than any of the parts with very few weak spots. Plenty of memory on the
host processor is an enabler for a lot of z/OS and DB2 exploitation.
Don't put DB2 or z/OS on a memory starvation diet and then complain it
is not up to peak performance demands.
Best Regards,
Sam Knutson, GEICO
System z Performance and Availability Management
mailto:[EMAIL PROTECTED]
(office) 301.986.3574
"Think big, act bold, start simple, grow fast..."
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Tom Moulder
Sent: Friday, November 09, 2007 1:42 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: Real storage usage - a quick question
Memory solves all problems.
Tom Moulder quoting Ted VanDuyn
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