-------------------<snip>-----------------
I'll accept some of the responsibility for your confusion, Walt. I
first used the words "5% decrease in utilization" to describe how many
fewer resources the operating system was expected to use. I see now
how that phrase might be misinterpreted. (Ted's comments just added to
the confusion.) A better, non-ambiguous, wording choice would have
been to say "5% performance improvement" like Cheryl did. (I guess
that's why they pay her the "big bucks". :-)
-------------------<unsnip>-----------------
I can't help but stick my oar in here.
It appears that comparisons and branches are being combined into single
instructions on the z/10 processor. I would estimate that when z/OS, or
its successor, requires a minimum of a z/10 processor, we'll see further
improvements in operating system performance, and perhaps a slight
improvement in storage utilization. While older version of z/os (or any
other system) will PROBABLY continue to run, later versions will utilize
these new instructions heavily, with improvements as each component is
updated. Considering the number of compares followed by branches that
must be present in any operating systems, these new instructions MUST
represent performance improvements.
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