NAME

schedulerinfo - Displays extended scheduler tasks information.

SYNOPSIS

torrus schedulerinfo --tree=TREENAME [options...]

DESCRIPTION

This utility displays the extended scheduler tasks information for tree TREENAME on standard output. This might be useful for scheduler planning and analysis.

OPTIONS

--config: Reports scheduler's configuration. The values are explained below.

Total collector/monitor leaves: N: Total number of datasources being processed by collector or monitor daemon.
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 line.
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.

--runtime: 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: M seconds: 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 day.
N running cycles passed: How many times the task was executed since last reset. The counter is normally reset after torrus_compilexml(1) successfully compiles the configuration.
N late starts: How many times the task has started with a delay from its normal schedule.
N too long runs: How many times the task execution time was longer than its period.
N overrun periods: How many periods have been missed because of too long executions.
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: Mimimum, 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 writen in a background thread. This value shows the length of the RRD update queue at the beginning of each update cycle.

--help: Displays a help message.

NOTES

See more documentation at Torrus home page: http://torrus.org

AUTHOR