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MF68468 - LIC-DB-OTHER-PERFM Native positioning hot cacheline reductio

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC-DB-OTHER-PERFM Native positioning hot cacheline reductio


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
PRE  5770999  V7R3M0    MF67016   00/00    0000
PRE  5770999  V7R3M0    MF65941   00/00    0000
CO   5770999  V7R3M0    MF68466   00/00    0000
CO   5770999  V7R3M0    MF68467   00/00    0000
CO   5770999  V7R3M0    MF66117   00/00    0000
CO   5770999  V7R3M0    MF66118   00/00    0000
CO   5770999  V7R3M0    MF66119   00/00    0000
CO   5770999  V7R3M0    MF66121   00/00    0000
CO   5770999  V7R3M0    MF66123   00/00    0000
CO   5770999  V7R3M0    MF66124   00/00    0000
CO   5770999  V7R3M0    MF66125   00/00    0000
CO   5770999  V7R3M0    MF66126   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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APAR Error Description / Circumvention

-----------------------------------------------
Certain highly used native cursor positioning operations can
result in a shared cache-line being frequently updated,
potentially affecting system performance.

CORRECTION FOR APAR MA48933 :
-----------------------------
The shared cache-line update frequency was reduced through local
caching.

CIRCUMVENTION FOR APAR MA48933 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF68148      OSP-DB enhanced error logging in close database file process
   MF66122      OSP-DB-OTHER-PERFM TLBIE RESPONSE TIMES SPIKES AND CACHE LIN

Summary Information

System..............................i
Models..............................
Release.............................V7R3M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA48933
Superseded by:......................
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C1245730


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Document Information

Modified date:
14 September 2021