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MF66484 - LIC PERFM reduce path lenght in expert cache ager code.

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC PERFM reduce path lenght in expert cache ager code.


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
TR   5770999  V7R2M0    MF99109   00/00    0000



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
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interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

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Code', the terms of which were provided in a printed document that was
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APAR Error Description / Circumvention

-----------------------------------------------
When determining how many pages the expert cache ager tasks has
aged, a count of aged pages before it runs is subtracted from
the count of aged pages after it runs.  The code that calculates
the number of aged pages, must sum a count of aged pages for
each physical processor. As systems grow larger this can take a
substantial amount of time, as the method will be called very
frequently and have more numbers to sum.

CORRECTION FOR APAR MA47872 :
-----------------------------
We will change the code to return the number of pages aged by
the method, eliminating the need to sum before and after it is
called.

CIRCUMVENTION FOR APAR MA47872 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS IS A DELAYED PTF TO BE APPLIED AT IPL TIME.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF66362      OSP-OTHER-PERFM IPL SPENDING TIME IN SRCD90027C0 SYSTEM JOBS
   MF65211      LIC-OTHER-WAIT
   MF66390      LIC-OTHER-PERFM POOL NODE, MEMORY DISTRIBUTION ISSUES
   MF66349      LIC-PFRM Increase performance immediately following a DPO op
   MF66268      LIC-OTHER-WAIT PARTITION HANG AFTER LPM MIGRATION
   MF65819      LIC QPFRADJ hangs during main storage pool adjustment.
   MF65675      LIC-PFRM IPL takes longer than normal after DPO.
   MF65204      Base enablement to persist settings accross IPLs.
   MF65131      LIC Incorrect output in VL1000D101

Summary Information

System..............................i
Models..............................
Release.............................V7R2M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA47872
Superseded by:......................View fix details for PTF MF69633
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C9297720


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Document Information

Modified date:
12 April 2022