Overview of IMS Monitor reports
A list of reports available from data collected by the IMS Monitor, together with the principal performance data they contain, is shown in the following table.
Related reading: For those reports marked by a DC
,
see IMS Monitor reports for DCCTL.
The reports marked MSC
in the list are only produced when
MSC is active. The MSC reports and their interpretation are in the
following table.
The order of the reports listed in the following table matches the sequence of the output from the IMS Monitor Report Print Program. The duration or constraints of a monitoring snapshot might not include certain events necessary for an individual report, in which case only report headings or partial data are produced.
| Report name | Principal information |
|---|---|
| System Configuration | Monitor run documentation |
| Message Queue Pool | Buffering and message I/O per transaction |
| Database Buffer Pool (DB) | Count of DB calls and I/O per transaction |
| VSAM Buffer Pool (DB) | Count of inserts and I/Os |
| Message Format Buffer Pool | Count of blocks fetched and I/Os |
| Latch Conflict Statistics | IMS internal processing |
| General Wait Time Events | Wait times for SNAPQ |
| Region and Jobname | Monitor run documentation |
| Region Summary | Elapsed times and count of DL/I calls |
| Region Wait | Wait times |
| Programs by Region | Elapsed times for region usage |
| Program Summary | Overall program statistics |
| Program I/O (DB) | Wait times/PCB |
| Communication Summary | Elapsed times for lines |
| Communication Wait | Wait times by line |
| Line Functions | Count and size of blocks transmitted |
| MSC Traffic (MSC) | Count and routing of transactions |
| MSC Summaries (MSC) | Count of transactions by destination |
| MSC Queuing Summary (MSC) | Count and queuing time by link |
| Transaction Queuing | Queue loading statistics |
| Reports | Count of space failures and deadlocks |
| Run Profile | Monitor run documentation |
| Call Summary (DB) | Call counts and timings/segment type |
| Distribution Appendix | Event frequency distributions |
The majority of the data items in IMS Monitor reports are elapsed times. These are normally expressed in microseconds. An entry of 1876534 represents 1.876534 seconds or 1876 milliseconds. Any times that do not follow this convention show the unit of measure on the report.
You can also find counts of events under the heading OCCURRENCES, and some figures that represent the number of bytes.