Gentle Listers
Our IT-Department has been benchmarked by a consulting firm a couple of
weeks ago and, unfortunately, the zOS-environment reached the poorest score
of all benchmarked platforms (UNIX, Windows, zOS and the
"Storage"-platform).
But the presented values were strange; e.g. "productivity" was measured by
dividing the #of MIPS by the #of FTEs (which led to a very "poor"
productivity in our shop since we run just 4 CPs but do have also 4 ICFs and
2 zAAPs). Unfortunately, the interrogator had never heard of the latter 2
and so they didn't get into account.
IMHO "productivity" in these days means running your workload with as little
(softwarelicensed) MIPS as possible.
But with this benchmark, doubling our MIPS and running exactly the same
workload would have doubled our "productivity" (no joke!!), and since the
costs/MIPS (another parameter) would decrease (vWLC), we would be the
champs!
My boss does now have to justify these "poor" results to the CEO (since
consultants are *always* right).
We have built a reference case (our biggest 3270-based application) that
currently gets replaced by a WAS/DB2 solution written in Java. We tested
some prototypes by simulating 3000 concurrent users and expect it to consume
about 6-10 times the resources that the current application does.
So, following the logic of the consultant, this would boost our
"productivity" quite a bit!
Has anybody undergone a "benchmarking" with some more accurate parameters
and values? What were they? -
If we could show more reasonable parameters resulting from other studies,
this could be a big help.
Thanks a ton for any suggestion(s)
Tom
Thomas Ramseier
Systems Engineer / Mainframe Systems
FOITT - Swiss Federal Office of Information Technology, Systems and
Telecommunication
Monbijoustrasse 74
CH-3003 Berne, Switzerland
thomas (dot) ramseier (at) bit (dot) admin (dot) ch
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