Data about a transaction is accessed. The transaction has a set of components. A graphical representation of the components of the transaction is displayed such that the graphical representation includes a time axis and a call stack position axis. In one embodiment, the time axis depicts time left to right and the call stack position axis depicts call stack position top to bottom. Additionally, the user interface can receive a selection of one of the components, access data for the selected component and display additional details about that selected component.