11.28.8 ERUF Calculation Table
Use this table to calculate an ERUF value for all or part of a transaction. Typical parts of a critical transaction that are checked by using this table include:
- Resource needed to invoke a function and display first panel.
- Resource needed to progress from a panel to next panel.
- Resource needed to close down function and return to caller.
- Resource needed to process entire batch job.
|
Resource Usage Item |
Calculation |
Est. ERUF |
|
Entry to small function (<200 lines) |
Add 1 |
|
|
Entry to medium function (<500 lines) |
Add 2 |
|
|
Entry to complex function (<900 lines) |
Add 3 |
|
|
Entry to very complex function (>900 lines) |
Add 4 |
|
|
Does not use OPTIONS(*NOMESSAGES). For entry and exit logic only. |
Add 0.25 |
|
|
Does not use OPTIONS(*DEFERWRITE). For any code using screen panels. |
Add 0.25 |
|
|
Display panel presented on remote device. |
Add 1 |
|
|
Exit logic only. If any external built-ins are used, add one only shutdown value of |
Add 0.25 |
|
|
Open off shared files already opened by another higher level function. |
Divide total by 4 and add the result |
|
|
Close off shared files that are still open in another higher level function. Usually only applies to exit logic. |
Divide total by 8 and add the result |
|
|
Open of files that are not already open |
Divide total by 2 and add the result |
|
|
Close of files not opened by higher caller Usually only applies to exit logic. |
Divide total by 4 and add the result |
|
|
CALLs to other functions. Add the total ERUFs of all called functions. |
Add all ERUFs |
|
|
Database I/Os performed |
Divide total by 10 and add the result |
|
|
Group 1 RDML commands / built-ins executed (count loops repetitively) |
Divide total by 100 and add the result |
|
|
Group 2 RDML commands / built-ins executed (count loops repetitively) |
Divide total by 50 and add the result |
|
|
Group 3 RDML commands / built-ins executed (count loops repetitively) |
Divide total by 20 and add the result |
|
|
Group 4 RDML commands / built-ins executed (count loops repetitively) |
Divide total by 10 and add the result |
|
|
Total ERUF value |
n/a |
|
|
For *HEAVYUSAGE re-entry, subtract file opens |
n/a |
|
|
For re-execution of code that has to open files the first time that it is executed, subtract file opens |
n/a |
|