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List:       racf-l
Subject:    Re: RACGLIST usage
From:       "Sokolsky, Hayim Z." <hsokolsky () DTCC ! COM>
Date:       2018-08-28 20:18:51
Message-ID: SN6PR1501MB20004C7DA1E4842A782A49A2D80A0 () SN6PR1501MB2000 ! namprd15 ! prod ! outlook ! com
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Everywhere I've been I have pushed using RACGLIST since it became available....

1. It ensures consistency. The RACLISTed rules are the same even across IPLs. Without \
RACGLIST, any system that was IPLed builds its own new RACLIST which may differ from \
the other systems.

2. Less RACLIST building overhead. Only one system builds the dataspaces from \
scratch. The rest use the RACGLIST copies. Way less overhead for large classes.


Hayim Sokolsky
Director, Security Architect
Security Architecture and Technology
Technology Risk Management
DTCC Tampa
Direct: +1 813 470-2177 | hsokolsky@dtcc.com



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-----Original Message-----
From: RACF Discussion List [mailto:RACF-L@LISTSERV.UGA.EDU] On Behalf Of Elardus \
                Engelbrecht
Sent: Tuesday, August 28, 2018 14:41
To: RACF-L@LISTSERV.UGA.EDU
Subject: Re: RACGLIST usage

ATTENTION! This email originated outside of DTCC; exercise caution.


Russ Hardgrove wrote:

> - IPLS (where same merging activity is skipped) can be faster.  Or startups of \
> regions (who do a GLOBAL=YES raclist) can be improved.  At least the first one to \
> create dataspace.   Others (using same profle set) share that one, as before.  \
> Again I/O and ENQ activity greatly reduced.

> -Do IPLs or that first region start (for first global=yes raclist) take time??  \
> This (use of RACGLIST) can help.  Qualified performance folks can say:  "gee.... \
> RACF activity is holding up region start up."  RACGLIST may well solve THAT issue.  \
> And unrelated to SYSPLEX comm use.

Where do you see the IPL timings and where do you see RACF is holding up X, Y and Z? \
In IPCS startup log with times/duration of 'milestones' of IPL process(es)? Or \
somewhere else? RMF? SMF? Syslog messages?

I really want to argue with those performance gurus... ;-)


> P.S.   I'd welcome any additional conversation and will accept any accurate \
> correction of misstatements.   I used to teach this stuff.   But.....  (as this was \
> ALL from memory)  :-p

Your memory is better than mine... :-P

Groete / Greetings
Elardus Engelbrecht
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