Collecting Stack Data for Event-based Sampling Analysis

By default, the Intel® VTune™ Amplifier collects data on the application call flow (stacks) during algorithm tuning analysis types based on the user-mode sampling and tracing collector. You may enable this option for the hardware event-based sampling analysis types, as follows:

1. Click the New Analysis button on the VTune Amplifier toolbar.

   The Analysis Type configuration window opens.

2. From the analysis tree on the right, choose the required event-based sampling analysis type. Typically, you are recommended to start with the Advanced Hotspots analysis.

   The right pane is updated with the configuration options for the selected analysis type.

3. Configure the analysis options:

   • For Advanced Hotspots, select the Hotspots, stacks and context switches (recommended) or Hotspots, call counts, stacks and context switches collection level.

   • For other hardware event-based sampling analysis types, select the Collect stacks checkbox.

4. Click the Start button on the right to run the selected analysis type.

   VTune Amplifier collects hardware event-based sampling data along with the information on execution paths. You may see the collected results in the Hardware Event Counts viewpoint providing performance, parallelism and power consumption data on detected call paths.