Counters for this category contain information for the Scheduler service.
Note: With the instrumentation level set to anything other than MAX, the values may be less accurate for TimeStatistics and CountStatistics (and in the case of CountStatistics, such as numConnectionHandles, can even be negative). This is due to counters not being synchronized. Synchronizing counters is very expensive in terms of resources, so it is only done when the instrumentation level is set to MAX.
Name | Key | Description | Version | Granularity | Type | Level |
Failed tasks | Failed Tasks | The number of tasks that failed to execute | 5.0 and later | Per Scheduler | CountStatistic | High |
Executed tasks | Executed Tasks | The number of tasks executed successfully | 5.0 and later | Per Scheduler | CountStatistic | High |
Number of polls | Number of Polls | The number of poll cycles completed for all daemon threads | 5.0 and later | Per Scheduler | CountStatistic | High |
Tasks per second | Tasks per sec | The number of tasks executed per second | 5.0 and later | Per Scheduler | RangeStatistic | High |
Collisions per sec | Collisions per sec | The number of collisions encountered per second between competing poll daemons | 5.0 and later | Per Scheduler | RangeStatistic | High |
Time for poll | Time for poll query (ms) | The execution time in milliseconds for each poll daemon thread's database poll query | 5.0 and later | Per Scheduler | RangeStatistic | High |
Task execution Time | Task execution Time (ms) | The time in milliseconds taken to execute a task. | 5.0 and later | Per Scheduler | RangeStatistic | High |
Tasks expiring per poll | Tasks expiring per poll | The number of tasks in a poll query | 5.0 and later | Per Scheduler | RangeStatistic | High |
Task latency | Task latency (secs) | The period of time in seconds that the task is delayed | 5.0 and later | Per Scheduler | RangeStatistic | High |
Poll time | Poll time (secs) | The number of seconds between poll cycles | 5.0 and later | Per Scheduler | RangeStatistic | High |
Tasks executed per poll | Tasks executed per poll | The number of tasks executed by each poll daemon thread. (Multiply this by the number of poll daemon threads to get the tasks executed per effective poll cycle.) | 5.0 and later | Per Scheduler | RangeStatistic | High |