Intel® VTune™ Amplifier XE and Intel® VTune™ Amplifier for Systems Help
The Call Stack pane shows more stacks than the call tree in the Bottom-up pane.
There are several stacks going to the same function, but to different code lines (call sites).
The call tree in the Bottom-up pane aggregates these stacks in one line but the Call Stack pane shows each as a separate stack. For more details, see the Call Stacks in the Bottom-up Pane and Call Stack Pane topic.