This page provides an overview of time range comparisons in AppDynamics.

Time range comparison in Dash Studio helps identify differences in application performance trends for two time periods. You can line up two time periods of the same data and compare. For instance, it might be useful to compare an application’s average response time on the previous day with the same day last week. 


Comparisons are currently only available for Time Series widgets.

All Data Panel options for Time Series support comparisons.

A global time range (for example “Last 4 hours”) is selected for the entire dashboard by default.


Compare Time Range

The default global time range is denoted as T1. Time comparisons are done against this time range. All comparisons are set using Widget Properties.
To compare two time periods:
  1. Once you add a Time Series widget to the canvas, go to the Widget Properties panel and expand the Compare Time Range section. 
  2. Set a second time range (denoted as T2) with the same duration as the global time range set on the widget by default. T2 can be shifted back in time based on the settings in the Compare Time Range section. 
    There are
     three options available within the Compare Time Range section:

Granularity

By default, Dash Studio matches granularities if they are different between T1 and T2 time ranges. Less recent data in AppDynamics is stored at a lower granularity, which means there are fewer data points present on the data series when it is displayed using Dash Studio. To help you perform an apples-to-apples comparison, Dash Studio is by default set to Auto and shows both T1 and T2 time ranges using the same granularity (even if they differ). However, this behavior can be changed by selecting the Retain Original Granularity option instead of selecting Auto. When you select this option, both T1 and T2 show data at their original granularities. This makes comparing behaviors difficult, but the newer data is highly granular.

Showing the time range comparison doubles the number of data series on the chart. If initially three lines are shown in the widget time range without the comparison, six are shown when the comparison is defined. As new data is received, the widget and its comparisons are updated continuously.

AppDynamics stores a reduced granularity (fewer data points) for older time ranges.