Windows Performance Analyzer: Understanding and Resolving the "Missing ImageId Event"
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The Windows Performance Analyzer (WPA) is a powerful tool for profiling and troubleshooting applications on the Windows platform. However, users may encounter issues when trying to analyze their applications, such as the "Missing ImageId Event" error. In this article, we will delve into the causes of this error and provide solutions to help you overcome this obstacle.
What is the "Missing ImageId Event" Error?
The "Missing ImageId Event" error occurs when the Windows Performance Analyzer is unable to resolve the symbols for a particular image or executable. This can happen when the debug symbols are not available or are not in the correct format.
Causes of the Error
- The Windows 10 WPA dropped support for older debug symbol formats, only supporting the "RSDS" format.
- The session is not merged with the "NT Kernel Logger", which provides necessary information to resolve symbols.
Solutions to the "Missing ImageId Event" Error
To resolve the "Missing ImageId Event" error, try the following solutions:
- Use an older version of WPA: Try using the Windows 7 or Windows 8.1 version of WPA to record and view the trace.
- Use a relogger library: Utilize a relogger library such as TraceEvent to inject fake RSDS data for the images of concern and doctor the PDBs to have a matching RSDS signature.
- Write a WPA add-in: Create a WPA add-in that performs a fallback symbol lookup, similar to Wpa.Demystifier.
- Merge the session with the NT Kernel Logger: Stop the session using the command
xperf.exe -stop my_trace -stop -d merged_trace.etl to merge both sessions into a single file.
Best Practices for Using Windows Performance Analyzer
To avoid encountering the "Missing ImageId Event" error, follow these best practices:
- Use the latest version of WPA: Ensure you are using the latest version of WPA to take advantage of the latest features and bug fixes.
- Use the correct debug symbol format: Use the "RSDS" format for debug symbols to ensure compatibility with WPA.
- Merge sessions with the NT Kernel Logger: Always merge your sessions with the NT Kernel Logger to ensure that all necessary information is available for symbol resolution.
Conclusion
The "Missing ImageId Event" error can be a frustrating issue when trying to analyze applications with Windows Performance Analyzer. However, by understanding the causes of the error and following the solutions outlined in this article, you can overcome this obstacle and successfully profile and troubleshoot your applications. Remember to follow best practices for using WPA to avoid encountering this error in the future.
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