System Use Reporting › System Use Report Samples › CPU Activity Graphs › Considerations

Considerations

• CPU utilization shows CPU time broken down by TCB, SRB, batch, TSO, and overhead time. Overhead time is interval time minus total CPU time + wait/IPL/idle time.
• If any time is not graphed, it is included in the blank area on the graph. If overhead is graphed and there are no wait records in the data, the overhead time should fill the rest of the interval not represented by CPU time. If a user reports no wait time, check to see if type 70 records are generated.
• MP factor is the average number of initiators active during the interval. MP factor is the elapsed time in the interval divided by seconds in each interval.
• System occupancy, if selected, shows active and allocation time by batch and TSO.
• Paging activity, if selected, shows total pages broken down by batch and TSO.
• CPU denominator is seconds in each interval. FLD1 is graphed time divided by CPU denominator.
• Occupancy denominator is seconds in each interval times the number of initiators. The default for number of initiators is 15. Paging denominator is seconds in each interval times maximum pages per second. FLD2 is graphed data divided by occupancy denominator or paging denominator.
• The elapsed time can include more than active and allocation time; so FLD2 and MP factor may not be proportional.
• The dates at the top of the report include system records. If overhead is not being graphed, there could be intervals with no data even though the dates at the top look like there should have been data for the interval.
• For multiday reports, each interval is represented by data averaged over the number of days shown in the DAYS column.
• Shift and day flags on the SYSUSE1 statement affect production of 'SUMMARY - SHIFT n' and SUMMARY - ALL recap lines.
• This report always starts at Shift 1 Start time.
• Production of either CPU Activity or Disk and Tape Activity graphs, or both graphs require 72 bytes of storage for each interval, with a batch/TSO system.
  • Graph characters for CPU utilization are as follows:
  • ID 1 is batch CPU time under TCB (problem program). (B)
  • ID 2 is TSO CPU time under TCB (problem program). (T)
  • ID 3 is batch CPU time under SRB (System) z/OS only. (O)
  • ID 5 is overhead time. (-)
• Graph characters for System Occupancy are as follows:
  • ID 1 is batch active time. (B)
  • ID 2 is TSO active time. This shows up only if TSO option is on. (T)
  • ID 3 is batch allocation time. (O)
  • ID 4 is TSO logon delay time. This shows up only if TSO option is on. (0)
• Graph characters for Paging Activity are as follows:
  • ID 1 is batch total pages. (B)
  • ID 2 is TSO total pages. This shows up only if TSO option is on. (T)
• The default graph characters are 1=B, 2=T, 3=O, 4=0, 5=-. If any overrides are supplied, all of the defaults are dropped.

 CA JARS                                    CPU ACTIVITY                                                   PAGE    1
 Resource Accounting SP0                                                                                          09 FEB 1998  16
 
 
 TIME OF MEASUREMENT IS FROM 98/01/02 AT 20.37.36                                                 TOTAL
                                                                                                  TOTAL
                        TO   98/01/04 AT 07.14.07                                                 INCLUDES  98/01/02 THRU 98/01/04
 
 
                                   CPU UTILIZATION - FLD1                            SYSTEM OCCUPANCY - FLD2
 
  FLD1  FLD2  FLD3       0        25        50        75       100    MP    0        25        50        75       100
  ( PERCENTAGES )        +---------+---------+---------+---------+  FACTOR  +---------+---------+---------+---------+  DAYS
 100.0  10.1         0000 BBB-------------------------------------    3.3    BBBB                                         2
 100.0  12.1         0030 BBB-------------------------------------    3.8    BBBBB                                        2
 100.0  13.4         0100 BBBO------------------------------------    3.8    BBBBB                                        2
      .                                                                  .
      .                                                                  .
      .                                                                  .
 100.0  69.9         0900 BBBBBBBBBBBBBBBBBBBTTTTTTTTTTO0---------   41.3    BBBBBBBBBBBBBBBBBBTTTTTTTTTO                 1
 100.0  60.8         0930 BBBBBBBBBBBBBBBBBBTTTTTTTTTO------------   43.6    BBBBBBBBBBBBBBBTTTTTTTTT                     1
  99.9  54.9         1000 BBBBBBBBBBBBTTTTTTTTTTO-----------------   46.8    BBBBBBBBBBBBBBTTTTTTTO                       1
 100.0  60.5         1030 BBBBBBBBBBBBBBBBBBTTTTTTTO0-------------   51.7    BBBBBBBBBBBBBBTTTTTTTTTO                     1
 100.0  66.2         1100 BBBBBBBBBBBBBTTTTTTTTT0-----------------   53.1    BBBBBBBBBBBBBBBBTTTTTTTTTT                   1
 100.1  55.8         1130 BBBBBBBBTTTTTTTTO0----------------------   46.3    BBBBBBBBBBBBBTTTTTTTTO                       1
 100.0  69.7         1200 BBBBBBBBBBTTTTTTTTTTTTTT0---------------   46.4    BBBBBBBBBBBBBBBTTTTTTTTTTTT0                 1
 100.1  32.5         1230 BBBBBBBBBTTTTO--------------------------   13.0    BBBBBBBBBBBTT                                1
 100.1  25.4         1300 BBBBBBBBBBBTTO--------------------------   12.7    BBBBBBBBBT                                   1
  99.9  57.3         1330 BBBBBBBBBBBBBBBBBBTTTTTTTTTT0-----------   41.5    BBBBBBBBBBBBBBTTTTTTTTO                      1
 100.0  64.6         1400 BBBBBBBBBBBTTTTTTTTTTO0-----------------   52.1    BBBBBBBBBBBBBBBTTTTTTTTTT0                   1
 100.1  41.7         1430 BBBBBBBBBTTTTTTTTO----------------------   45.8    BBBBBBBBBTTTTTTT0                            1
 100.0  35.7         1500 BBBBTTTTTTTTT0--------------------------   45.9    BBBBBBTTTTTTO0                               1
 100.0  47.2         1530 BBBBBBBBTTTTTTTTTT0---------------------   45.6    BBBBBBBBBBTTTTTTTT0                          1
 100.1  63.9         1600 BBBBBBBBBBBBBBBBBBBBTTTTTTTO0-----------   41.8    BBBBBBBBBBBBBBBBBTTTTTTTT0                   1
 100.1  57.6         1630 BBBBBBBBBBBBBBBBBBBTTTTTT0--------------   34.3    BBBBBBBBBBBBBBBBBTTTTTO                      1
 100.0  44.7         1700 BBBBBBBBBBBBBBBBTTO---------------------   14.3    BBBBBBBBBBBBBBBBBT                           1
 100.1  47.4         1730 BBBBBBBBBBBBBBBBTO----------------------   12.2    BBBBBBBBBBBBBBBBBBT                          1
  78.2  23.7         1800 BBBBBB-------------------------             4.3    BBBBBBBBB                                    1
   0.4   0.6         1830                                             0.1                                                 1
  81.3  23.1         1900 BBBBBO---------------------------           4.6    BBBBBBBBB                                    1
    .                                                                  .
    .                                                                  .
 100.0   8.8         2300 BB--------------------------------------    3.3    BBBT                                         2
 100.0  10.0         2330 BBB-------------------------------------    3.5    BBBB                                         2
 SUMMARY - ALL                                                                                                            3
  47.6  11.2       DEFIND BBBT---------------                         6.0    BBBT
  99.1  23.4       MEASRD BBBBBBTTO-------------------------------   12.5    BBBBBBBTT
                         +---------+---------+---------+---------+          +---------+---------+---------+---------+
                         0        25        50        75       100          0        25        50        75       100
 
 
 L E G E N D
 FIELD   DESCRIPTION                SYMBOL           SCALE
 FLD1    CPU UTILIZATION            BTO0-            100 PCT =   30 MINUTES
 FLD2    SYSTEM OCCUPANCY           BTO0             100 PCT =  450 MINUTES (BASED ON  15 INITIATORS)