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MF59902 - OSP-PERFM MEMORY POOL MANAGEMENT DEFECT RESULTING IN PAGE ST

PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-PERFM MEMORY POOL MANAGEMENT DEFECT RESULTING IN PAGE ST


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
TR   5770999  V7R2M0    MF99101   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,
including programs that circumvent control technology designed to limit
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.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
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INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
QPFRADJ can not move memory fast enough to prevent excessive
paging in some memory pools.  The reason is that the page move
algorithm has left the memory pools with too little memory on
some nodes to allow efficient movement of memory from one pool
to another.

CORRECTION FOR APAR MA44475 :
-----------------------------
The code is corrected to move memory such that the physical
makeup of a pools memory matches the partitions physical memory
layout. This will allow for the most efficient movement of
memory from one pool to another.

CIRCUMVENTION FOR APAR MA44475 :
--------------------------------
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
--------------  ------------------------------------------------------------
   MF59773      LIC-OTHER-PERFM MEMORY POOL LOCK CONTENTION DURING DYNAMIC P
   MF59544      LIC Disallow the creation of Page descriptors with invalid v
   MF59445      LIC-OTHER-INCORROUT DLPAR REMOVE MEMORY REMOVED ACCESS TO AN
   MF59054      LIC Change code to gain slight performance increase during p
   MF58329      OSP-SRCB6000103-UNPRED LOOKS SIMILAR TO A FIRMWARE ISSUE CAU
   MF59311      OSP-WAIT END SUBSYSTEMS WILL NOT END, NO JOBS ACTIVE IN SUBS
   MF59191      LIC excessive paging in pools.
   MF59289      LIC Page affinity task improvements.
   MF59100      LIC Reduce number of Hcalls to gain better performance.
   MF58970      LIC Use new method to report affinity score.
   MF58849      LIC-OTHER-UNPRED 64K PAGES BROKEN UP, DURING PAGE MIGRATION

Summary Information

System.............................. i
Models..............................
Release............................. V7R2M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA44475
Superseded by:...................... View fix details for PTF MF99109
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C5135720


System i Support

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Document information

More support for: i family

Software version: V7R2M0

Operating system(s): OS/400

Reference #: MF59902

Modified date: 18 March 2015