• Select snapshots
  The allocation hot spot comparison compares two snapshot files. In this step, you select the first and the second snapshot file for the comparison. The combo boxes contain all snapshot files that have been added to the snapshot selector. The first and second snapshot files must be different.
• Class selection
  In this step, you choose for which class or package the comparison should be made. By default all classed are selected, you can restrict the class selection to a single class or a single package.
• View parameters
  In this steps you can select aggregation level, liveness mode and filtered classes handling, just as for the allocation hot spots view.

• the name of the allocation hot spot
• the size in the second snapshot file minus the size in the first snapshot file
• the allocations in the second snapshot file minus the allocations in the first snapshot file

The second column incorporates a bidirectional bar chart. Increases are painted in red and to the right, while decreases are painted in green and to the left. In the view settings dialog you can choose whether you want this bar chart to display absolute changes or the percentage of the change. The other value is displayed in parentheses. This setting also determines how this column is sorted.