Intel® VTune™ Profiler User Guide

User Guide

Contents

View Instrumentation and Tracing Technology (ITT) API Task Data in
Intel® VTune™
Profiler

User task and API data can be visualized in
Intel® VTune™
Profiler
 performance analysis results.
After you have added basic annotations to your application to control performance data collection, you can view these annotations in the
Intel VTune
Profiler
 timeline. All supported instrumentation and tracing technology (ITT) API tasks can be visualized in
VTune
Profiler
.
Use the following steps to include ITT API tasks in your performance analysis collection:
  1. Click the (standalone GUI)/ (Visual Studio IDE)
    Configure Analysis
     button on the
    Intel® VTune™
    Profiler
     toolbar.
    The
    Configure Analysis
     window opens.
  2. Set up the analysis target in the
    WHERE
     and
    WHAT
     panes.
  3. From
    HOW
     pane, click the Browse button and select an analysis type. For more information about each analysis type, see Performance Analysis Setup.
  4. Select the
    Analyze user tasks, events, and counters
     checkbox to view the API tasks, counters, and events that you added to your application code.
    In some cases, the
    Analyze user tasks, events, and counters
     checkbox is in the expandable
    Details
     section. To enable the checkbox, use the
    Copy
     button at the top of the tab to create an editable version of the analysis type configuration. For more information, see Custom Analysis .
  5. Click the Start button to run the analysis.
After collection completes, the analysis results appear in a viewpoint specific to the analysis type selected. The API data collected is available in the following locations:
  • Timeline view: Each API type appears differently on the timeline view. In the example below, the code was instrumented with the task API, frame API, event API, and collection control API. Tasks appear as yellow bars on the task thread. Frames appear at the top of the timeline in pink. Events appear on the appropriate thread as a triangle at the event time. Collection control events span the entire timeline. Hover over a task, frame, or event to view the type of API task.
  • Grid view: Set the
    Grouping
     to
    Task Domain / Task Type / Function / Call Stack
     or
    Task Type / Function / Call Stack
     to view task data in the grid pane.
  • Platform tab: Individual tasks are available in a larger view on the
    Platform
     tab. Hover over a task to get more information.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.