The Class view displays the summary information sorted by class. Beneath each class, the methods are listed in a hierarchy. You can open and close a class to show or hide its methods.
The Class view lets you study the performance impact of substituting one implementation of a class for another. You can run profiles on the two implementations, and view the behavior of the different objects side by side. You can do the same with the Flat view on a function-by-function basis, but the Class view offers a more natural way of accessing object-based data. It also lets you gather all the object methods together and view them simultaneously, revealing the effect of interactions between the methods of the object. The figure below shows the Class view of the profiler results.
