Detail line descriptions
Each line represents a System Object – an object to which
WAIT time is attributed. These lines are arranged hierarchically.
You can expand a line (using the “+” line command) to
reveal a breakdown into subordinate objects. Each type of object shown
in this report is described here:
- Task
- This is the highest level object in the report. Each active Task
is reported. The percentage of the measurement time interval the task
was observed to be WAITing is reported. Note: A SETUP option is available which specifies that all Tasks – including inactive tasks – are to be displayed.
- Name Column
- The name of the program specified in the ATTACH macro that started the task as well as the TCB index number is shown.
- Description Column
- The TCB address is shown. For CICS® measurements that have the CICS data extractor selected, the TCB mode is displayed for CICS TCBs. This immediately follows the TCB address.
- Category
- WAIT time within a Task is categorized as APPLCN, SYSTEM, DATAMG, IMSDLI, DB2SQL, ADABAS or NOSYMB.
- DPA Group
- Within a category – usually the SYSTEM category –
load modules can be further arranged into Descriptive Program Attribution
(DPA) groups. These are functional groups like: IMS™, DB2®,
VSAM. Note: A SETUP option is available from which you can specify aggregation of modules into Group or Subgroup. Subgroup offers a more granular, less inclusive categorization than Group. Application Performance Analyzer uses the module name to locate descriptive information in its DPA tables.
- Name Column
- The symbolic name of the Group/Subgroup appears under this heading.
- Description Column
- A Group/Subgroup description appears under this heading.
- Load Module
- A load module line appears under a Group/Subgroup line, under
a Category line, or under an SVC line.
- Name Column
- The load module name appears under this heading.
- Description Column
- If a DPA functional description is found for the module name, it is reported under this heading. Otherwise “Application Program” is displayed.
- CSECT (Control Section)
- These lines can appear as subordinate, breakdown items under a
load module line. If Application Performance Analyzer were
able to find ESD (External Symbol Dictionary) information, during
the measurement process, for a load module, these items will appear
under the load module and the measured WAIT time will be attributed
to them.
- Name Column
- The CSECT name appears under this heading.
- Description Column This will display “CSECT in xxxxxxxx” where xxxxxxxx is the name of the load module to which the CSECT belongs.
- SVC (Supervisor Call)
- This line shows attribution of measured WAIT time during execution
of an MVS™ Supervisor Call.
- Name Column
- “SVC” followed by a 3-digit decimal SVC number (000 to 255) appears under this heading. For example, “SVC120.”
- Description Column
- A description of the SVC service, or the name of the macro which invokes the SVC appears under this heading. For example, “GETMAIN/FREEMAIN.”
- SQL Statement
- This item attributes WAIT activity to a DB2 SQL statement.
- Name Column
- A sequence number is assigned to each unique SQL statement observed during the measurement. This sequence number is shown in the name field. It is possible for some sequences numbers to be missing (sequence gaps) from the report. This will occur if a sequence number was assigned to SQL statements but no WAIT activity was measured for these statements.
- Description Column
- The name of the program that issued the SQL request followed by the precompiler statement number (enclosed in parentheses) is shown here. This is followed by the SQL function (for example, SELECT, INSERT, COMMIT).
- DL/I Call
- This item attributes WAIT activity to an IMS DL/I call.
- Name Column
- A sequence number is assigned to each unique DL/I call statement observed during the measurement. This sequence number is shown in the name field.
- Description Column
- The DL/I function code appears followed by the PCB name followed by the relative PCB number in parentheses. The location of the call, in csect+offset format, follows.
- Adabas Call
- This item attributes WAIT activity to an Adabas call.
- Name Column
- A sequence number is assigned to each unique Adabas call statement observed during the measurement. This sequence number is shown in the name field.
- Description Column
- The name of the program that issued the Adabas request and the offset within the program, followed by the Adabas command code that was issued, is displayed in the field. When Natural calls Adabas, the Natural program name and statement number are displayed. If the statement is within an INCLUDE member, the INCLUDE menber name is displayed.
- Unresolved Address
- This item attributes measurement WAIT time to a range of addresses
for which a corresponding load module name could not be determined.
- Name Column
- WAIT time observed in a 4096 (4K) byte range of addresses is reported in an Unresolved Address line. This range is expressed in the format “HHHHHxxx” where HHHHH are the 5 high order hexadecimal digits of the address. For example, “08915xxx” means the range from 08915000 to 08915FFF.
- Description Column
- “Unresolved Address” appears under this heading.