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MF58509 - LIC-OTHER-D/T576B-PERFM AFTER APPLYING MF99008

PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

LIC-OTHER-D/T576B-PERFM AFTER APPLYING MF99008


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

-----------------------------------------------
Any systems with a D/T576B fibre channel IOA will encounter
performance problems if MF99008 is applied. Response times per
IO are approximately 10ms regardless of the size of the IO. This
applies to both tape and DASD for both reads and writes. This
will affect saves, restores and any other IO performed to
devices attached to the 576B adapter.

CORRECTION FOR APAR MA43733 :
-----------------------------
After applying this fix, performance degradation caused by this
problem will be resolved.

CIRCUMVENTION FOR APAR MA43733 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


This fix should be perm applied.


Default Instructions

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



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
     NONE

Summary Information

System.............................. i
Models..............................
Release............................. V7R2M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA43733
Superseded by:...................... View fix details for PTF MF99109
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C4276720


System i Support

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Document information

More support for: i family

Software version: V7R2M0

Operating system(s): OS/400

Reference #: MF58509

Modified date: 30 April 2014