The Bottom-up and the Top-down Tree panes are closely tied, using the same collected data to show specific information for each program unit (bottom-up analysis) and the overall impact of each element together with its callees (top-down analysis).
The Top-down Tree pane includes Self Time and Total Time columns for each data column in the Bottom-up pane:
In the example above, columns in the Top-down Tree pane match the columns in the Bottom-up pane as follows:
Bottom-up Pane | Top-down Tree Pane |
|---|---|
Wait Time by Utilization | Wait Time by Utilization Wait Time:Total by Utilization |
Wait Count | Wait Count Wait Count:Total |
Spin Time | Spin Time:Total |
The Bottom-up pane provides only Self type of data (function/synchronization object without callees). In the grid, Self time/Count column headers do not have :suffix.
The Total type of data (function/synchronization object + all callees' Self data) is provided in the <data>:Total column and unique to the Top-down Tree pane. In the example above, these are the Wait Time:Total by Utilization, Spin Time:Total, and Wait Count:Total columns.
The Top-down Tree pane is synchronized with the related Bottom-up pane. If you select a program unit in the Bottom-up pane and click the Top-down Tree tab, the selected program unit is highlighted in all call sequences. Self time for such a program unit in the Bottom-up pane equals the sum of Self time values for the same program unit in different call sequences in the Top-down Tree pane. If you select several items in one pane and switch to the other pane, the Selected value for the Self time, provided at the bottom of the data table, is the same.
Note
Since the Bottom-up pane shows program units with non-zero Self time/count values, you can synchronize only the selections with the non-zero Self time/count value.