This tab compares the most recent profiling data with that of a previous set. For each type of information there are three associated columns, for example CPU, Old CPU, and Diff CPU. The leftmost column is the current information, the column labelled "Old" is the information from the previous set, and the column labelled "Diff" is the change between the new and the previous information. The previous set is considered the baseline.

By default, the "previous set" consists of the data from the last time it was refreshed. You can change this behavior to compare the most recent data to data captured in a snapshot at a particular moment in time. For information on capturing data in a snapshot, see Taking snapshots

As with the Execution Statistics tab, you can change the type of information and how it appears on the Comparison Execution Statistics tab as follows.