microsoft / microsoft/profile-explorer
Windows On ARM Emulation Profile Request
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- Dominant language
- C#
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- 286
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Description
Background:
I'm currently working on profiling the WOA (Windows on ARM) emulation layer.
My goal is to measure the time spent on each DLL and XTAJIT cache file.
However, at present, all JIT-compiled DLLs are grouped under a single "Unknown" item in the profiler.
Limitation:
Profile Explorer uses frameIp to check DLL and calc time.
However, XTAJIT cache files are not standard PE images—they are injected at runtime by xtajit.dll and xtacache.exe.
As a result, there is no image address information available in the ETL file for these cache files.
Question:
Is it possible to enhance the kernel to include this information, or is there a feasible workaround to accurately attribute time spent to each XTAJIT cache file?
Looking forward to your feedback
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No files or tests are identified. Start by examining how Profile Explorer uses frameIp and ETL image-address data, then investigate the runtime injection of XTAJIT cache files by xtajit.dll and xtacache.exe. Done means establishing whether kernel support or a workaround can attribute time to individual cache files and documenting the feasible approach.
Written by the indexing model from the issue text.
Assessment
- Domain
- performance
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100