Time aggregation

Time aggregation is the aggregation of all data points for a single resource over a specified period (the granularity). Data aggregations in Resource Time Series reports are of the time aggregation type.

The result of the aggregation is one data point that reflects a statistical view of the collected and aggregated data points. For example, average, minimum, maximum, sum, or count. Typically, multiple aggregated data points are presented in a report for a given reporting period.

The following figure illustrates time aggregation:

In this figure:

Data points are collected from a single resource (Resource A) every 5 minutes (the polling period).
The granularity for this aggregation is 20 minutes.
The data points collected during each granularity period are aggregated into a single statistical value. For example, the average of all the collected data points.
The time stamp for each aggregated value is taken from the middle of the granularity period. In this figure, 6:10 (halfway between 6:00:00 and 6:19:59) and 6:30 (halfway between 6:20:00 and 6:39:59).