Statistics Types

AMPS collects statistics in several different ways. For each individual statistic, understanding how the number is collected and calculated -- that is, which type of statistic you are working with -- is important for accurately understanding the statistic.

The table below lists the statistics types in AMPS:

Type	Description
Cumulative	Statistics are cumulative since the instance was started (for example, the number of bytes AMPS has sent over a given network interface since the instance started).
Fixed	Information that is fixed for the lifetime of the instance (for example, the process ID of the AMPS server).
Snapshot	The value of a metric at a specific point in time (for example, the number of active subscriptions for a client at a particular moment).
Interval Average	Average computed for this statistics interval (for example, the number of bytes sent per second on a given network interface for the last statistics interval).
Running Average	Average computed since the instance was started (for example, the conflation ratio for a conflated topic).