This report supplies information on the activation control function (ACF) of the PRIOR task scheduler. The data can be used to assess the internal activation decisions. Data interpretation and consequential actions presuppose intimate familiarity with the activation algorithm used in the PRIOR task scheduler and should therefore be left to system specialists.
Report output
The REPORT ACF statement is used to request the output of the ACF report.
HOST0001 SM2 ACF <date> <time>
COUNTERS PER MIN
+--------+--------+--------+--------+--------+--------+--------+--------+
| ACTIVA | FORCDA | PREEMT | INVOCL | INVOCS | MICTSR | SYSERV | FVI |
| 7125.1 | 0.0 | 0.0 | 41.4 | 7125.1 | 14439 | 38.3 | 9125.0 |
+--------+--------+--------+--------+--------+--------+--------+--------+
RESOURCE UTILIZATION IN %
+--------+--------------+--------------+--------------+
|RESOURCE| LOW | MEDIUM | HIGH |
+--------+--------------+--------------+--------------+
| CPU | 87.5 | 5.0 | 7.5 |
+--------+--------------+--------------+--------------+
| MEMORY | 100.0 | 0.0 | 0.0 |
+--------+--------------+--------------+--------------+
| PAGING | 100.0 | 0.0 | 0.0 |
+--------+--------------+--------------+--------------+
Monitoring information
COUNTERS PER MIN | The number of calls per minute is output for each of the variables listed in the table. |
ACTIVA | Total number of task activations per minute |
FORCDA | Number of task deactivations per minute enforced by ACF |
PREEMT | Number of preemptions per minute |
INVOCL | Number of “long” ACF invocations per minute |
INVOCS | Number of “short” ACF invocations per minute |
MICTSR | Number of micro-time-slice runouts per minute |
SYSERV | Number of system services runouts per minute |
FVI | Number of “Fremd vor Idle” (remote before idle) accesses per minute. “Fremd vor Idle” access: a processor initiates a task from the local Q1 of another processor if its own Q1 is empty, so as not to become idle. |
RESOURCE UTILIZATION IN % | Utilization of the resources CPU, memory and paging is classified as low, medium and high utilization. The percentages given in the table represent the share of total calls in the monitoring cycle. |
If all counts in a monitoring cycle are zero, SM2 outputs the message NO ACTIVATION CONTROL FUNCTION ACTIVITY IN LAST INTERVAL.