MF59416 - LIC-PERFM High CPU in LD* tasks for SAVRSTLIB

TYPE PROGRAM  REL  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

-------------------------------------------------
ObjectConnect commands such as SAVRSTLIB may run slowly and use
a lot of CPU in several LD* tasks.

CORRECTION FOR APAR 'MA44221' :
-------------------------------
An Advanced Analysis macro named LDCONFIG will be provided to
allow a user to display or change some Load/Dump performance
attributes:
- Maximum Load/Dump buffer size
- Task affinity for Load/Dump pipeline tasks

The performance of ObjectConnect commands may be improved by
turning on Load/Dump task affinity for path devices.

CIRCUMVENTION FOR APAR 'MA44221' :
----------------------------------
None.


Activation Instructions


None.




Special Instructions

An Advanced Analysis macro named LDCONFIG is provided to allow a user
to display or change some Load/Dump performance attributes. Adjusting
the attribute values may improve the performance of save and restore
operations.

To use the LDCONFIG macro, follow these steps:
1. Access System Service Tools by using SST or DST.
2. Select Start a service tool.
3. Select Display/Alter/Dump.
4. Select Display/Alter storage.
5. Select Licensed Internal Code (LIC) data.
6. Select Advanced analysis. (You must page down to see this option.)
7. Page down until you find the LDCONFIG command. Then, place a 1
(Select) next to the command and press Enter. You are now on the
Specify Advanced Analysis Options window. The command shows as
LDCONFIG.
8. Enter the appropriate option and any required parameters in the
Options field. For example:
o Enter -h          to display the available options.
o Enter -d          to display the current values.
o Enter -a path on  to enable task affinity for ObjectConnect
operations.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF50178      LIC-LOOP SAVE JOB HUNG WITH TASK LDDOIM LOOPING
   MF49966      LIC-MSGMCH5204 Save operation ends abnormally
   MF48466      LIC-MSGMCH5204 Incorrect object identified after save error
   MF49881      LIC-WAIT Job hangs while performing save operation
   MF55036      LIC-F/QSRRSDEQ-MSGCPF3795 RSTOBJ LAST OBJECT IN SAVF FAILS

Summary Information

System i Support