This feature lets you compare any two memory snapshots.
To locate memory leaks, consider using the object generations feature.
To compare snapshots:
- Open both snapshots.
- Select one of them.
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Use
File | Compare Snapshot with...(also available from the popup menu) and select the snapshot to compare with.
When comparing memory snapshots, there is an option to choose objects of which reachability scopes to be included to the comparison results:
A tab with "Comparison" view will open. The "Comparison" view contains the memory views "Class tree" and "Class list" with 2 columns: Objects (+/-) and Size (+/-). These display the differences in object counts and sizes. Positive values mean that Snapshot 2 (the later memory state) has more objects and/or its objects have the bigger total size.
100% of size corresponds to the total size of all objects in the old snapshot. Likewise, 100% of count corresponds to the number of objects in the old snapshot.