21.3.1 Description of call tree data

The call tree is collated from all the stack snapshots taken during profiling. The Call Tree tab shows a graph in which:

• The graph nodes represent function calls
• The graph edges show the proportion of time spent in each call.

Each parent node represents the caller function, so that the ancestors of each leaf node represent the entire stack. The graph edges are labelled with the time spent in the child call as a percentage of the time spent in the parent call, these times averaged over all the profile data collected.