When you notice that the heap memory is unexpectedly consumed (e.g. when monitoring used heap memory at Timeline page), you may want to identify which objects are actually consuming heap memory.
To identify the objects consuming heap memory:
Note: If the refresh is too fast to see the content, unselect Refresh toggle button
[] at the local toolbar to disable refresh.
Alternatively, you can change the period to update on preference page
Window > Preferences > Java > Monitor > Period to update.