John,

Thanks for the write-up and the lead time heads-up for z/OS "next". ServerPac 
was due for a makeover anyway, right? Wasn't your evil twin responsible for 
most of the ServerPac capabilities? <grin>

And if YOU think it prudent, the rest of us should take heed! :-)

Bob

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of John Eells
Sent: Wednesday, April 25, 2018 4:37 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: z/OSMF, was How far out of date are my skills

z/OSMF is a lot easier to configure now than it used to be.  I've been through 
the entire setup, and it's not bad in my opinion.  The most common sticking 
point seems to be security system setup.  You can find the pertinent samples in 
SAMPLIB with names like IZUSEC (the main one) and IZUxxSEC, where xx is an 
abbrevation for the application name.  For historical reasons, Software 
Management's sample is named IZUDMSEC.  A rewritten configuration chapter 
should hit the streets soon, too, which I think will help.

z/OSMF was rebased on WebSphere's Liberty Profile in z/OSMF V2.1, which 
dramatically reduced its CPU, memory, and disk footprints.  The idle CPU 
consumption of the z/OSMF server is pretty low.  It only chews up significant 
cycles if you use it to do things.  That said, you can stop the server when 
you're not using it.  You can also lower its priority in WLM, but if you go 
*too* far in that direction, you might experience browser timeouts if your 
other workloads yield high overall CPU utilization for long-ish periods of time.

I have not done a comparative measurement of a ServerPac-based installation and 
a Software Management Deployment operation CPU consumption, but I would expect 
broad swaths of both to be fairly similar.  ServerPac uses GIMGTPKG to get the 
package, and so does Software Management.  Likewise, both use GIMUNZIP to load 
the files and data sets from the GIMZIP archives.

The things that will eventually require using things unique to z/OSMF Software 
Management are acquiring the package (or pointing at it, if you don't have 
internet connectivity to IBM), doing the customization you want (data set 
names, catalog environment, etc.), the job management done by the final step of 
the ServerPac dialog, and (eventually) managing the setup workflows that we 
want to have replace the ServerPac product-specific batch jobs.  If you want to 
model after something existing, which I expect most will, you will also have to 
define the thing to be modeled after as a "software instance" first.

It's probably worth mentioning that not all of the aforementioned processing is 
zIIP-eligible.  The z/OSMF proper part of it is mostly eligible (I'd guess 
about 80-85%), but many of the system services used by Software Management 
(DADSM, CVAF, Catalog, VSAM, etc.) are not. 
Those things cost the same whether we drive them from a PLI-based ISPF dialog 
or from a z/OSMF application.


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