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7.2 Analyzing an active job

1. For our tour, we are just going to analyze an active job. So we select option 1 as shown in

Figure 7-2.

Figure 7-2 The main menu selecting option 1

2. Figure 7-3 shows the active jobs in the system by decreasing CPU percentage.

Figure 7-3 The panel showing active jobs

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3. The data is constantly being gathered, so it will be updated when you press Enter. Note

that after you press Enter, FBISTART, which is part of Application Monitor’s monitoring

code, moves up to second place. You will also notice that the system is rather empty, with

TCPIP using the most CPU at 0.02% as shown in Figure 7-4.

Figure 7-4 An update on the active job status

4. The pale blue fields on the screen are selectable. We put our cursor on TCPIP and press

Enter to indicate that we want to monitor the TCPIP job as shown in Figure 7-5.

Figure 7-5 Selecting the TCPIP job

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5. This brings up the active monitor sessions window as shown in Figure 7-6. If another

session were being monitored (for example, started with a delayed monitoring session), it

would also appear in this window.

Figure 7-6 The active monitor sessions panel

6. The information is collecting constantly, and if you press Enter, the fields will be updated.

The Sample Count field indicates how many samples have been taken so far, and the

Pgm Rpts field indicates how many modules have been encountered during the sampling.

Once the Sample Count and Pgm Report numbers are reasonably high, put the cursor on

the pale blue Pgm Rpts field for the job you want to analyze in detail and press Enter as

shown in Figure 7-7. We selected the Pgm Rpts for TCPIP.

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Figure 7-7 Selecting Program Reports on the Active Monitor Sessions panel

7. Figure 7-8 shows the modules that have been monitored, in decreasing order of

frequency. Again, the data will be updated on the fly each time you press the Enter key.

You can page up (F7) and down (F8) to look at the full list of modules.

Figure 7-8 Load module based breakdown of the TCPIP job

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8. The modules in the module column are pale blue and therefore selectable to get further

information. We select the high use module at the top of the list as shown in Figure 7-9.

Figure 7-9 Selecting a load module to analyze

9. Figure 7-10 shows detailed information on each CSECT in the module and their utilization.

In this module there is only one CSECT.

Figure 7-10 The CSECT breakdown of the selected module