The get subcommand retrieves statistics about the input fragments the event builder has seen. The intent is that this could be periodically refreshed to drive a status display written in in Tk. The clear command clears the counters that maintain those statistics.
This command returns a list that contains the following members (in order):
The timestamp of the oldest fragment still in the queues.
The largest timestamp that has been seen.
The total number of fragments that have been submitted for ordering.
Detailed statistics for each input queue. For each live data sourcde, this element will itself be a list that contains the following elements:
The source Id of a data source. This determines which source's statistics are contained by this list element.
The number of queued fragments.
The timestamp of the element at the front of the input queue.