Intel® VTune™ Amplifier sets the Sample After value for hardware events automatically. For predefined hardware-level analysis types, the Sample After value is displayed in the Analysis Type window. You cannot edit the Sample After value provided in the table for each event. But during the data collection the VTune Amplifier may adjust it by a multiplier. The multiplier depends on the Duration time estimate option value specified in the Project Properties: Target dialog box.
For a custom hardware event-based analysis type, you may edit the default Sample After value defined by the VTune Amplifier for each event as follows:
The Analysis Type configuration window opens.
The drop-down menu opens.
The Custom Analysis dialog box opens.