About Sampling Over Time ViewAbout Sampling Over Time ViewThe Sampling Over Time view enables you to view events sampled chronologically during a data collection run.
The Over Time view displays the samples collected for a single event. All the events sampled in a run appear in a drop-down list:
To view the Over Time view for another monitored event, select the event from the drop-down list.
A most common use of the Over Time view is to identify when threads are running serially or in parallel. Regular sampling views show which threads ran during data collection but cannot inform you if the threads ran in parallel or serially.
You can invoke the Sampling Over Time view for selected items in the
regular Thread, Process, and Module views. From a multiple event-based
sampling view, you can select an event, and click on the Display Over
Time View icon 
in the sampling toolbar to invoke the Over Time view for the
selected items. By default, the Over Time view displays the samples collected
for the selected items over the entire period of time the Activity executed.
The view consists of two panels, the left showing the names of the selected items (modules, threads, or processes) and the right showing samples collected over time. The right panel is divided into small uniform squares, each representing a slice of time, in seconds. The red squares indicate a larger number of samples and the green squares indicate a smaller number of samples collected during a time span for a process, thread, or module. You can change the color representing a large or small number of samples using the Over Time Views Configuration options in the Options dialog box.
In the example of an Over Time view shown below, you can see that the VTune(TM) Performance Analyzer divides the selected time range equally in seconds.
The Legend for Over Time views provides a general idea of how many samples were collected based on the color of a square:
noteThe Display Sampling Over Time View icon is grayed out for the Hotspot view.
