Pane: CPU Frequencies

To access this pane:

  1. Open the CPU Frequency viewpoint provided for the data collected with CPU Frequency analysis type.

  2. Click the sub-tab in the result tab.

    The CPU Frequencies window opens providing the CPU Frequencies pane on top.

Use this pane to explore the performance data for a CPU per metric. The CPU Frequencies pane includes the following basic elements:

Note

Power analysis is provided by the VTune Amplifier for Systems only. To analyze applications on Linux* target systems, run the CPU Sleep States or CPU Frequency analysis types from the VTune Amplifier GUI or CLI installed on the Linux or Windows* host. To analyze applications on Android* devices, use the Intel Energy Profiler (SoCWatch/WuWatch) to run the analysis directly on the device. You can view collected data either in the text-only mode on the device or import and view the data in the VTune Amplifier GUI nstalled on the host system.

Grouping Levels (Granularities)

Each row corresponds to a grouping level (granularity). For the CPU Frequency analysis results, available grouping levels are Core (default) and Package/Core. You can change the grouping level using the Grouping drop-down menu at the top of the CPU Frequencies pane.

When viewing data aggregated by package, click the plus sign to expand a row and view data by core in each package.

Performance Metrics

By default, the performance data in the table is sorted in the descending order providing the most performance-critical cores first. Each data column in the table corresponds to a performance metric.

The CPU Frequencies pane displays the data per the following metrics:

Metric

Description

Time

Time spent in different frequency modes. Click the button to view how much time your application spent running on a particular core in a particular frequency.

Note

Mouse over the column header to see the metric description.

For more complete information about compiler optimizations, see our Optimization Notice.