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Exercise 2 - Manually Collect ETW Logs for Media Scenarios Using WPR

  • Článek

Automated tests are great for verifying the audio or temporal video quality of a device for a specific automated scenario; however, if an audio or video glitch occurs during a manual test, then the Windows Performance Recorder (WPR) tool can be used to manually collect an Event Tracing for Windows (ETW) trace during a repro of the problem.

Step 1: Collect an ETW trace using WPR

  1. Right-click on the Start menu and click on Command Prompt (Admin).

  2. Navigate to the folder where you have WPR installed.

  3. Run the following command:

    wpr -cancel

  4. Run the following command:

    wpr -start Media.wprp -filemode

  5. Run a workload such as video playback or a real time communications scenario.

  6. Run the following command:

    wpr -stop Media.etl

Step 2: Visualize the ETW trace in MXA

  1. Install the Media eXperience Analyzer (MXA) which is part of the Windows ADK.

  2. Right-click on the Start menu and click on Command Prompt (Admin).

  3. Navigate to the folder where you installed MXA.

  4. Run the following command:

    xa -i <Media.etl location>\Media.etl

    For example, if Media.etl were located at C:\Performance\Media, you would type the following command:

    xa -i C:\Performance\Media\Media.etl

  5. Press the Turn Symbols Off button to turn off symbol lookup.

  6. Explore the various media related datasets and providers enabled in the trace.