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The DM Primary Display consists of three screens which are viewed by using the left and right paging PF keys. The right PF key cycles 1-2-3-1; the left PF key cycles 1-3-2-1.
When you issue the DM command, you first see the default screen shown following. This screen displays an overview of the job steps that are being monitored.
---- PMA Display Monitored Jobs ------------------------- Job 0001 OF 0002 COMMAND ===> SCROLL ===> CSR LC Jobname Program Sysname Started Elapsed EXCP Cnt. CPU Time & runaway % --------------------------- ---------------------------------------------- __ SAMPJOB1 PROC001 SYS1 10:35:30 00:00:09 7 0.18 __ SAMPJOB2 PROC002 SYS1 10:35:30 00:00:09 7 0.25 ****************************** END OF JOBS **********************************
For each job listed, the data in the following list is shown:
Name of the job
Program name from the JCL or application program name, if available
Name of the system where the step is executing
Time the step started
Elapsed time for the step in hh:mm:ss format
Number EXCPs issued by the step, in units
CPU consumed by the step in ssssss.hh format
Percentage of the CPU runaway value shown as a bar graph
The bar is initially white. It turns green in 10% increments from the left, representing the percent of CPU runaway that is used. When the runaway value is reached, the whole bar is set to pink. If an alert is issued for the step, the bar is set to red.
The second screen shown following, displays current used resources as measured values and as a percentage of average use.
---- PMA Display Monitored Jobs ------------------------- Job 0001 OF 0002 COMMAND ===> SCROLL ===> CSR LC Jobname Procstep Stepname CPU (Avg%) IO (Avg%) Elapsed (Avg%) --------------------------- ------------------------------------------------- __ SAMPJOB1 PROC001 0.36 18% 17 15% 0 4% __ SAMPJOB2 PROC002 STEP001 0.32 11% 12 8% 0 3% ****************************** END OF JOBS ************************************
For each job listed, the data in the following list is shown:
Name of the job
Name of the step that invoked the procedure
Name of the step that invoked the program
CPU used, in ssssss.hh format
CPU used, as a percentage of the average
EXCP count, in 1000s
EXCP count, as a percentage of the average
Elapsed time, in minutes
Elapsed time, as a percentage of the average
On the third screen, shown following, two rows are displayed for each job:
---- PMA Display Monitored Jobs ------------------------- Job 0001 OF 0002 COMMAND ===> SCROLL ===> CSR LC Jobname Average/Runaway CPU EXCP ELAPSED ----------- PXI Projections CPU/IO CPU/ELP IO/ELP IO/CPU ELP/CPU ELP/IO __ SAMPJOB1 AVE/RUNAWAY 2 7 114 393 6 15 PROJECTIONS 6 25 425 94 1 2 ---------------------------------------------------------------------------- __ SAMPJOB2 AVE/RUNAWAY 3 6 155 481 6 15 PROJECTIONS 12 33 400 109 2 2 ---------------------------------------------------------------------------- ****************************** END OF JOBS ************************************
For each job listed, the data in the following list is shown:
Name of the job
Step average CPU time in seconds /
Runaway value for CPU time in seconds
CPU time projection based on the I/O rate /
CPU time projection based on elapsed time
Step average number of EXCPs in 1000s /
Runaway value for number of EXCPs in 1000s
Projection for number of EXCPs based on elapsed time /
Projection for number of EXCPs based on the CPU rate
Step average elapsed time in minutes /
Runaway value for elapsed time in minutes
Elapsed time projection based on the CPU rate /
Elapsed time projection based on the I/O rate
The Performance Index (PIX) projections of CPU, I/O, and ELAPSED for a step are calculated by extrapolating the current use of each of the resources based on the percentage of the average used by the other two resources.
For example, the calculation for the CPU time projection for the CPU/IO value is:
the measured CPU seconds*100 / % of the average I/Os currently used
When a resource has exceeded its average use, it cannot be used to extrapolate for another resource. In such cases, the result field displays RRR>AVE, where RRR is the exceeding resource (CPU, I/O or ELAPSED).
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