• Select snapshots
  The allocation tree 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 and liveness mode, just as for the allocation tree view.

Each node has an optional bar chart at the beginning, Increases are painted in red, while decreases are painted in green. 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 sibling nodes are sorted.