SMFOD2 – SMF Daily Top 10 Batch Jobs

The SMFOD2 inquiry generates several chart sets.
The chart sets show the daily top
nn
(default 10) batch jobs using CPU, I/O, and central storage (memory) resources on your z/OS systems. For each resource type, one chart set shows the top ten batch jobs using the resource over the entire Central Processing Complex (CPC), and another shows the top ten batch jobs for each z/OS system. The inquiry reads detail data from the BATPGM (Batch User Program Activity) file, and summarizes the data by job name. The charted data reflects summarized interval and step record information from all job steps for the top ten batch jobs.
For CPU, the CPU time used by each of the top ten jobs is displayed using a vertical bar. The vertical bar is segmented by CPU time type (for example, TCB, SRB, I/O Interrupt, zIIP, zAAP, and so on).
Two horizontal lines show the program count (number of unique program executions) and interval count (number of interval records) encountered for the job. For short running steps, the interval count and program count values have similar values. For long running programs, the interval count exceeds the program count.
The program count data element (PGMCOUNT) is only set to one (1) for the last interval record for a long-running program. For jobs with a long-running program step that has not yet ended, PGMCOUNT is zero.
For I/O, I/O Service Units used by the top ten jobs is displayed. The vertical bar shows I/O service units for the top ten jobs. As with the CPU chart, the program and interval record count are shown using a horizontal line.
For device connect time, the device connect time used by each of the top ten batch jobs is displayed.  The vertical bar is segmented by device class (for example, DASD, TAPE, Unit Record, and so on). As with the CPU chart, the program and interval record count are shown using a horizontal line.
For EXCPs, The final chart shows EXCPs by device class, again using a segmented vertical bar. The EXCPs used by each of the top ten batch jobs is displayed.  The vertical bar is segmented by device class (for example, DASD, TAPE, Unit Record, and so on). As with the CPU chart, the program and interval record count are shown using a horizontal line.
For central storage, the top ten jobs with the largest average working set size are displayed. The average working set size is the average number of page frames in central storage that is used by the program. The page frame count is shown using a vertical bar and the program and interval record count are shown using a horizontal line.
The average working set size represents the average for all step and interval records that are encountered for each of the top ten batch jobs. For this inquiry, the average working set size may be of limited value because many batch jobs contain several execution steps with dissimilar execution characteristics.
The chart sample below shows the CPC level chart that is generated for jobs executing on an IBM z15 8561-608 CPC. The largest user of CPU time was the job ‘QAMUFE’. The chart shows that for the day depicted, the job only had one step completion spanning five interval records and consumed just over 35 (minutes/seconds???) of CPU time. Most of this time was zIIP CPU Time. Job ‘TSMATTX5’ consumed TCB CPU Time almost exclusively.

Uses

It is important to understand which applications are the biggest consumers of limited and expensive IT resources. This inquiry shows the largest batch job consumers running on z/OS systems—at both the CPC and individual z/OS system level. Knowing not only the amount of resource that is consumed but also the frequency of program execution can help you to focus on tuning efforts where potential payback is greatest. Tracking utilization by job name may or may not be useful at your installation—and is largely dependent on job naming standards.

Data Extracts

SMF Daily Top 10 Batch Jobs CPU CPCID
Left Y-axis
PGMTCBTM
Step TCB CPU Time
PGMSRBTM
Step SRB CPU Time
PGMSPNTM
Normalized zIIP CPU Time
PGMZPNTM
Normalized zAAP CPU Time
PGMTCTM
Step Initiator TCB Time
PGMISRTM
Step Initiator SRB Time
PGMHIPTM
Step Hiperspace CPU Time
PGMIOITM
Step I/O Interrupt CPU Time
PGMRCTTM
Step Region Control Task CPU Time
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
"rank" - Job Identification (where rank is 01, 02, and so on)
SMF Daily Top 10 Batch Jobs CPU SYSID
Left Y-axis
PGMTCBTM
Step TCB CPU Time
PGMSRBTM
Step SRB CPU Time
PGMSPNTM
Normalized zIIP CPU Time
PGMZPNTM
Normalized zAAP CPU Time
PGMTCTM
Step Initiator TCB Time
PGMISRTM
Step Initiator SRB Time
PGMHIPTM
Step Hiperspace CPU Time
PGMIOITM
Step I/O Interrupt CPU Time
PGMRCTTM
Step Region Control Task CPU Time
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
“rank” - Job Identification (where rank is 01, 02, and so on)
SMF Daily Top 10 Batch Jobs I/O – Service Units CPCID
Left Y-axis
PGMIOSU
I/O Service Units
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
"rank" - Job Identification (where rank is 01, 02, and so on)
SMF Daily Top 10 Batch Jobs I/O – Device Connect Time CPCID
Left Y-axis
PGMCCOMM
Communication Device Connect Time
PGMCDASD
DASD Device Connect Time
PGMCGRAF
Graphics Device Connect Time
PGMCTAPE
Tape Device Connect Time
PGMCUREC
Unit Record Device Connect Time
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
“rank” - Job Identification (where rank is 01, 02, and so on)
SMF Daily Top 10 Batch Jobs I/O – EXCPs CPCID
Left Y-axis
PGMCCOMM
Communication Device EXCPS
PGMCDASD
DASD Device EXCPS
PGMCGRAF
Graphics Device EXCPS
PGMCTAPE
Tape Device EXCPS
PGMCUREC
Unit Record Device EXCPS
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
“rank” - Job Identification (where rank is 01, 02, and so on)
SMF Daily Top 10 Batch Jobs I/O – Service Units SYSID
Left Y-axis
PGMIOSU
I/O Service Units
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
“rank” - Job Identification (where rank is 01, 02, and so on)
SMF Daily Top 10 Batch Programs I/O – Device Connect Time SYSID
Left Y-axis
PGMCCOMM
Communication Device Connect Time
PGMCDASD
DASD Device Connect Time
PGMCGRAF
Graphics Device Connect Time
PGMCTAPE
Tape Device Connect Time
PGMCUREC
Unit Record Device Connect Time
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
“rank” - Job Identification (where rank is 01, 02, and so on)
SMF Daily Top 10 Batch Programs I/O – EXCPs SYSID
Left Y-axis
PGMCCOMM
Communication Device EXCPS
PGMCDASD
DASD Device EXCPS
PGMCGRAF
Graphics Device EXCPS
PGMCTAPE
Tape Device EXCPS
PGMCUREC
Unit Record Device EXCPS
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
“rank” - Job Identification (where rank is 01, 02, and so on)
MF Daily Top 10 Batch Jobs Memory CPCID
Left Y-axis
PGMAVWSS
Avg Working Set Size
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
“rank” - Job Identification (where rank is 01, 02, and so on)
SMF Daily Top 10 Batch Jobs Memory SYSID
Left Y-axis
PGMAVWSS
Avg Working Set Size
Right Y-axis
PGMCOUNT
Program Steps Encountered
INTVLCNT
Interval Record Count
X-axis
JOBRANK
“rank” - Job Identification (where rank is 01, 02, and so on)

Data Source

  • BATPGM at the Detail Timespan

Inquiry Defaults

  • Derivations:
DATE
DATEPART(ENDTS)
CPCID
%CPCID (macro CPCID generated by sp.MICS.MACAUTOS(CPCIDFMT))
JOBRANK
PUT(COUNT,Z2.) || ' - ' || JOB ;
where COUNT is the rank of resource use (for example, 01 is the largest resource user)
TOTCPU
SUM(PGMTCBTM,PGMSRBTM,PGMHIPTM,PGMRCTTM,PGMIOITM, PGMSPNTM,PGMZPNTM,PGMISRTM,PGMITCTM) ;
INTVLCNT
INTVLCNT represents the number of observations that were summarized in the chart. In general, every observation in the MICS step level files represents an interval record, but there is no MICS data element that counts the number of intervals. These SMFODx inquiries make use of an accumulated data element that is not needed for charting (PGMCOACT) as a convenient way to summarize the number of observations included in the chart. They do this by assigning a value of one (1) to PGMCOACT.

Run-Time Execution Parameter Overrides

The SMFOD2 inquiry contains the following parameters:
UNIT
Select one or more
MICS database
units by entering the data base IDs. Enter multiple IDs with a blank following each ID value.
CYCLE RANGE
Enter range of
MICS
online file cycles or enter ARCHIVE for archive files.
SELECT YESTERDAY
Specify whether to report only on observations with a time stamp from yesterday.
Available values:
Y
- Yes
N
- No (Default)
WORKLOADS
Enter the number of workloads to display on the chart. The default is 10.