PTF Cover Letter
PTF ( Program Temporary Fixes ) Cover letter
LIC-PERFM INCREASE RESOLUTION OF TIME QUANTUM OPTION
Pre/Co-Requisite PTF / Fix List
REQ LICENSED PTF/FIX LEVEL
TYPE PROGRAM REL NUMBER MIN/MAX OPTION
---- -------- --- ------- ------- ------
TR 5770999 710 MF99005 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
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
-----------------------------------------------
This PTF addresses several minor performance and serviceability
issues pertaining to the LIC task dispatcher including:
- 500 microsecond time quantum resolution is unnecessarily
coarse.
- Response to platform affinity resource changes is inhibited
by processor folding.
- Partition can take up to 30 seconds to respond to EnergyScale
mode change.
CORRECTION FOR APAR MA42300 :
-----------------------------
The following LIC task dispatcher performance and serviceability
fixes are provided:
- Increase resolution of time quantum to 100 microseconds.
- Improve response to platform resource affinity changes.
- Reduce response time to EnergyScale mode changes.
- Add task dispatcher support macros to DST Advanced Analysis.
CIRCUMVENTION FOR APAR MA42300 :
--------------------------------
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
-------------- ------------------------------------------------------------
NONE
Summary Information
System.............................. | i |
Models.............................. | |
Release............................. | V7R1M0 |
Licensed Program............... | 5770999 |
APAR Fixed.......................... | View details for APAR MA42300 |
Superseded by:...................... | View fix details for PTF MF99011 |
Recompile........................... | N |
Library............................. | QSYS |
MRI Feature ........................ | NONE |
Cum Level........................... | C2279710 |
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Document Information
Modified date:
05 September 2012