This application can be used to collect data and therefore profile your Qt Quick applications. You can monitor CPU usage and also what type of Operations / Actions are bring performed, including where in the source code the operation is being called from and how long it has taken.
This little tool, part of the new Analyze Mode, can be used to profile your Qt Quick applications. With it you can inspect binding evaluations, signal handling, and painting operations when running your Qml code. This is very useful for identifying potential bottlenecks, specially in the evaluation of bindings.
Source[Qt-Labs]
