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MF59977 - OSP-PERFM DSPASPSTS BOTTLENECK IN MATERIALIZE PROCESS WHILE

PTF Cover Letter


PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-PERFM DSPASPSTS BOTTLENECK IN MATERIALIZE PROCESS WHILE


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
NONE



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
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
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

-----------------------------------------------
Upon review of WAITERS data, bottleneck / performance issue in
the materialize process while looking for existing locks within
the tasks (when many tasks are active). Code to be changed to
not examine every task and return a cached value indicating
whether locks are present or not.

CORRECTION FOR APAR MA44521 :
-----------------------------
The system licensed internal code has been modified to return
the cached value instead of querying all tasks on the system to
determine lock status.  This should significantly speed up the
materialize process since that query can be time consuming.

CIRCUMVENTION FOR APAR MA44521 :
--------------------------------
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
--------------  ------------------------------------------------------------
   MF58473      INCORROUT Display ASP Status screen step times can be inaccu
   MF57697      LIC-INCORROUT MCH3601 F/IoAspVaryOn T/QYASP when varyon UDFS

Summary Information

System..............................i
Models..............................
Release.............................V7R2M0
Licensed Program...............5770999
APAR Fixed..........................View details for APAR MA44521
Superseded by:......................View fix details for PTF MF64138
Recompile...........................N
Library.............................QSYS
MRI Feature ........................NONE
Cum Level...........................C5310720


System i Support

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Document Information

Modified date:
17 April 2015