Link Pack Area Report
The Link Pack Area report provides information about the use of the modified, fixed, and pageable link pack areas. This report can be used as a guide for determining where a link pack area module should reside and for packing the PLPA and MLPA to reduce page faults.
The Link Pack Area Report is produced by using the LINKPACK Analyzer control statement. The data for this report is obtained by using the LINKMAP Extractor control statement and defining GBLS=YES to the REPORT Extractor control statement.
The Link Pack Area Report is divided into four sections with an optional fifth section:
Performance Statistics
This section lists module counts for the MLPA, FLPA, and PLPA, in both the lower and extended areas. It also shows the user-supplied threshold rank for the run.
Link Pack Area Module Mapping
This section lists LPA modules sorted by page address. The action flag included in this section marks LPA pages, which contain modules with different levels of activity. Such modules are often candidates for inclusion in the packlist.
Portion of the Link Pack Areas Selected for Potential Substitution into the Packlist
This section lists all modules with a busy rank greater than the threshold rank, sorted in descending order by busy rank.
Time in Use
This section lists all modules with a busy rank greater than zero (one section each for the MLPA, FLPA, and PLPA). You can use these reports to make decisions regarding packlist inclusion and FLPA module placement.
Map Error Log
This report is generated only when errors occur. Any of the following errors might be reported:
- module name mismatch: More than one entry was found for the same location, but the module names were not the same.
- module length mismatch: More than one entry was found for the same location, but the module length was not the same.
- address mismatch: More than one entry was found for the same location, but the entry points were not the same.
- lower flag mismatch: More than one entry was found for the same location, but the characteristics of the entry were not the same. (State indicators.)
- extended flag mismatch:More than one entry was found for the same location, but the extended characteristics of the entry were not the same. (Location and type indicators.)
- unknown: A mismatch between at least two entries was found, but it could not be resolved into one of the previous categories.
If the LPA configuration was changed during the interval covered by the input data, two or more Link Pack Area reports are produced.
An example of the Link Pack Area Report is shown in the following figure.
BMC SOFTWARE, INC. XYZ COMPANY REPORT DATE: DD MMM YY 13.40
ACTL 10 JUN YY 09.00.00 10 JUN YY 15.59.59 WORLDWIDE HEADQUARTERS SYSTEM ID: SJSE Z v.rr.n
BASED ON REC TYPE/# RECS/# SAMPLES/REC HOURS: 240-11/224/24.9K/6.99 240-16/5/0/0
----------------------------------------------------- PERFORMANCE STATISTICS ----------------------------------------------------
MODULE COUNT: PLPA FLPA MLPA CSA THRESHOLD RANK
BELOW 16M (339) (0) (1) (24) (0)
ABOVE 16M (873) (2) (6) (36)
--------------------------------------------- LINKPACK AREA MODULE MAPPING SECTION ---------------------------------------------
ACTION BUSY MODULE MODULE PAGE ACTION BUSY MODULE MODULE PAGE ACTION BUSY MODULE MODULE PAGE
FLAG RANK NAME LENGTH ADDRESS FLAG RANK NAME LENGTH ADDRESS FLAG RANK NAME LENGTH ADDRESS
0 ISPKEY 1C68 54FE000 0 FLMXI 731C0 54D5000 0 FLMXI 731C0 54A6000
0 IKJIFR00 C90 54FD000 0 FLMXI 731C0 54D4000 0 FLMXI 731C0 54A5000
0 ISPISM 2358 54FD000 0 FLMXI 731C0 54D3000 0 FLMXI 731C0 54A4000
0 ISPISM 2358 54FC000 0 FLMXI 731C0 54D2000 0 FLMXI 731C0 54A3000
0 ISPISM 2358 54FB000 0 FLMXI 731C0 54D1000 0 FLMXI 731C0 54A2000
0 IEAETEQ 428 54FA000 0 FLMXI 731C0 54D0000 0 FLMXI 731C0 54A1000
0 ISPDTWIN 4BD8 54FA000 0 FLMXI 731C0 54CF000 0 FLMXI 731C0 54A0000
0 ISPDTWIN 4BD8 54F9000 0 FLMXI 731C0 54CE000 0 FLMXI 731C0 549F000
0 ISPDTWIN 4BD8 54F8000 0 FLMXI 731C0 54CD000 0 FLMXI 731C0 549E000
0 ISPDTWIN 4BD8 54F7000 0 FLMXI 731C0 54CC000 0 FLMXI 731C0 549D000
0 ISPDTWIN 4BD8 54F6000 0 FLMXI 731C0 54CB000 0 FLMXI 731C0 549C000
0 IGWAMCS3 9D8 54F5000 0 FLMXI 731C0 54CA000 0 FLMXI 731C0 549B000
----------------------- PORTION OF LINKPACK AREAS SELECTED FOR POTENTIAL SUBSTITUTION INTO THE PACKLIST -----------------------
(MODULES WHOSE RANK EXCEED THE THRESHOLD RANK)
MODULE MODULE BUSY MODULE MODULE BUSY MODULE MODULE BUSY MODULE MODULE BUSY
NAME LENGTH RANK NAME LENGTH RANK NAME LENGTH RANK NAME LENGTH RANK
ECNDLL 462C48 34 ACYAPCNP 7260 3 IKJEFT04 AFA8 2 IGC0002F 4120 1
CSVEXPR 73F0 20 BPXINLPA 8E338 3 IKTLTERM 17D0 2 IGC00020 F510 1
EUVPDLL 8CA658 18 EUVFDLL F1638 3 IRRMNGR 26FA0 2 IGC00030 1008 1
IEFW21SD 965D0 17 IGC0003E B518 3 ISGLRELS 11D8 2 IGC0005E 135C8 1
PSCLBSXP 1CF80 17 IGFDI0 A150 3 ISRPLEX E748 2 IGC0009C 77E8 1
ISPSUBS DC8B0 14 IGG019BO 3A0 3 ISRPX A0F8 2 IGG019BB 740 1
IEFJRASP 1830 13 IGWBBMF1 641D0 3 IWMI2LPA 19750 2 IGG019FL 370 1
----------------------------------------- MLPA MODULES BY TIME IN USE -------------------------------------------------------
% MLPA MODULE MODULE LOAD PAGE FRAME % MLPA % MLPA MODULE MODULE LOAD PAGE FRAME % MLPA
ACTIVITY NAME LENGTH ADDRESS FIXED USAGE PAGE ACTIVITY NAME LENGTH ADDRESS FIXED USAGE PAGE
PCT FAULTS PCT FAULTS
100.00 XDC31 48B60 5BEEB18 0.0 4.0 0.0
----------------------------------------- PLPA MODULES BY TIME IN USE -------------------------------------------------------
% PLPA MODULE MODULE LOAD PAGE FRAME % PLPA % PLPA MODULE MODULE LOAD PAGE FRAME % PLPA
ACTIVITY NAME LENGTH ADDRESS FIXED USAGE PAGE ACTIVITY NAME LENGTH ADDRESS FIXED USAGE PAGE
PCT FAULTS PCT FAULTS
8.21 ECNDLL 462C48 2B5C000 0.0 7.0 16.7 0.72 IXGINLPA E66E0 4CDA000 0.0 3.0 1.5
4.83 CSVEXPR 73F0 2AE7000 0.0 1.0 0.0 0.48 EAGRTLIB 42508 5AF9000 0.0 1.0 0.0
4.35 EUVPDLL 8CA658 30CE000 0.0 15.0 8.8 0.48 GDEIGCS 28980 3D5E000 0.0 2.0 1.0
4.11 IEFW21SD 965D0 4141000 0.0 13.0 1.5 0.48 ICEMAN 11200 C7B000 0.0 2.0 1.0
4.11 PSCLBSXP 1CF80 C4B000 0.0 1.0 8.3 0.48 IDA0192A 6F070 3F5D000 0.0 1.0 1.0
3.38 ISPSUBS DC8B0 564B000 0.0 12.0 1.5 0.48 IEEMB887 1C70 4081000 0.0 1.0 1.0
3.14 IEFJRASP 1830 410C000 0.0 1.0 0.0 0.48 IEWLDR00 1F7D8 436B000 0.0 2.0 0.0
If an action flag (shown as ****) is displayed in this report, it might not require action. Sometimes the system automatically assigns smaller modules to whatever space is available in the PLPA page. In such situations, it might not be possible or desirable to make changes.
In the PLPA Modules by Time in Use section, the PAGE FIXED PCT value is calculated as
In this same section, the PERCENT PAGE FAULTS value is calculated as
Link Pack Area Report field descriptions
The table below describes each field in Link Pack Area Report.
Field | Description |
|---|---|
MODULE COUNT | number of modules in PLPA, FLPA, MLPA, or CSA |
PAGE FIXED PCT | this field is blank |
THRESHOLD RANK | user-supplied value with two functions:
|
ACTION FLAG | four asterisks (****) are printed whenever a busy rank for a module sharing a page with another module has a difference greater than the user-supplied threshold value |
BUSY RANK | number of references to a module |
MODULE NAME | name of the link pack area module |
MODULE LENGTH | length of the link pack area module in bytes |
PAGE ADDRESS | hexadecimal address of the page that this module occupies in the link pack area |
% MLPA ACTIVITY | percentage of MLPA activity that was caused by this module |
LOAD ADDRESS | load address of this module |
PAGE FIXED PCT | percentage of times (frequency) that this module was observed in fixed pages |
FRAME USAGE | number of pages in the module where BUSY RANK was greater than zero |
% MLPA PAGE FAULTS | percentage of MLPA page faults caused by this module |
% PLPA ACTIVITY | percentage of PLPA activity that was caused by this module |
% PLPA PAGE FAULTS | percentage of PLPA page faults that were caused by this module |
% FLPA ACTIVITY | percentage of FLPA activity that was caused by this module |
% FLPA PAGE FAULTS | percentage of FLPA page faults that were caused by this module |
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