schedulerinfo - Displays extended scheduler tasks information.
This utility displays the extended scheduler tasks information for tree
on standard output. This might be useful for scheduler
planning and analysis.
- Reports scheduler's configuration. The values are explained
- Total collector/monitor leaves: N
- Total number of datasources being processed by collector or
- Scheduled leaves by type
- Torrus supports arbitrary number of collector types, and
this report shows how many datasources belong to every type. Currently the
monitor leaves are not divided into types.
- Least common period: N seconds
- The report below shows how the tasks are distributed across
the time line, and the least common period shows the period of this time
- Tasks execution timeline
- This report tells which task and how many datasources are
involved in each task startup event, and how these events are dispersed
across the time. The column Interval shows the time interval from
each task execution event to the next event on the timeline.
- Reports scheduler's runtime statistics, such as running
cycle times, late starts etc. The meaning of the output values is as
follows. Values that have zero values are usually not printed.
- Task: Name, Period: N seconds, Offset:
- Each scheduler task is characterized by its name (usually
Collector or Monitor), period, and timeoffset. Fore example, if period is
set to 300 seconds, and offset is 14 seconds, then the task would be
executed at 00:00:14, 00:05:14, 00:10:14, and so on for every hour in a
- N running cycles passed
- How many times the task was executed since last reset. The
counter is normally reset after torrus_compilexml(8) successfully
compiles the configuration.
- N late starts
- How many times the task has started with a delay from its
- N too long runs
- How many times the task execution time was longer than its
- N overrun periods
- How many periods have been missed because of too long
- N missed periods
- How many periods were missed because of any reason (such as
other tasks delaying).
- Min, Max, Average, Exp Average
- The time values are displayed in four columns: Minimum,
Maximum and Average values since last reset, and Exponential decay value,
which may be interpreted as the average for last several values. With
defaults defined in torrus-config.pl, 95% of the average is
calculated from last 3 values.
- Running Time
- How long the task executes each period.
- Late Start
- How long the task start was delayed.
- Too Long
- How much time the too long run took.
- RRD Queue
- In a multithreaded environment, the RRD files are written
in a background thread. This value shows the length of the RRD update
queue at the beginning of each update cycle.
- Displays a help message.
See more documentation at Torrus home page: http://torrus.org
Stanislav Sinyagin <firstname.lastname@example.org>