dotMemory 2016.1 Help

Sunburst Chart

Sunburst Chart is a graphical representation of the Group by Dominators | Tree view. In this view, the dominators hierarchy in an object set is shown using the sunburst chart. The more memory a dominator retains, the larger the central angle.

Use the chart to evaluate largest structures and determine objects that are crucial for your app in just one glance.

Consider the example for better understanding of Sunburst Chart.

tree_ex

As you can see, to analyze the dominators Tree above, you have to expand its nodes and interpret the numbers in the Bytes column. In contrast, just a glance at the Sunburst Chart allows you to determine main dominators and largest structures in your app. A click on a dominator you're interested in will show you its domination path (on the right).

sunburst_ex

Zooming In and Out

If you want to take a more detailed look at a certain dominator subtree, you can change the scale of the chart.
To zoom in on a dominator, double-click on the corresponding arc or select Zoom in from its context menu. The dominator will become a root of the chart.
To zoom back out, click on the center of the chart.

sunburst_anim

What Can I Analyze Next?

As well as in dominators Tree, you can select the following subjects for further analysis:

  • Exclusively retained objects
    To open objects retained by a particular dominator, do one of the following:
    • Double-click on the corresponding arc in the chart.
    • Select the dominator by clicking on the corresponding arc and click the Open Objects Retained by Selection button.
    • Open the context menu of the dominator by right-clicking on the arc and choose the Open objects retained by this set menu item.
    After this, the Retained by [type_name] subject will be added to Analysis path and the list of dominated objects will be displayed in the Type List view.
  • Dominators
    To open object set consisting of a particular dominator, do one of the following:
    • Select the dominator by clicking on the corresponding arc and click the Open Selection button.
    • Open the context menu of the dominator by right-clicking on the arc and choose the Open this object set menu item.
    After this, the Dominators [type_name] subject will be added to the Analysis Path and the list of objects will be displayed in the Type List view.
Last modified: 19 August 2016