Mark Zelden wrote:
On Fri, 14 Mar 2008 09:51:56 -0700, Edward Jaffe
<[EMAIL PROTECTED]> wrote:
I believe IBM currently uses an unofficial goal of a 5% decrease in
utilization per release.
Doesn't that conflict with the goals of the hardware sales people? ;-)
Seriously, that's the first time I ever heard that. It used to be a pretty
good ROT to expect 3-5% increase for each new release (all things
being equal).
Welcome to the 21st century. ;-)
IBM is scraping the bottom of the barrel looking for performance these
days. Example: the z10 added a bunch of new instructions that make
compare/jump faster by not surfacing the condition code to later
instructions in the pipeline. They even added instructions to help an
application micro-manage its cache usage!
Pipeline/cache issues used to be something only SYNCSORT and similar
utilities cared about. Now everyone's doing it!
--
Edward E Jaffe
Phoenix Software International, Inc
5200 W Century Blvd, Suite 800
Los Angeles, CA 90045
310-338-0400 x318
[EMAIL PROTECTED]
http://www.phoenixsoftware.com/
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