The process of drilling down is selecting items from a specific view and exploring the next level of detail. For example, from the Process view, you can double-click items (processes) in order to view the threads that run within a process. The diagram below shows the drill down process for sampling.
Optional drill down. Skip a level of detail and drill down to the next
level.
Default drill down. Drill down to the next level of detail.
Double-click on an item in a view.
OR
Select one or more items in a view.
Click the appropriate icon in the sampling toolbar to drill down to the next level.
Select one or more items in the Process view.
Click Module in the sampling toolbar.