Symbol Resolution on .NET 4.0 NGEN x64 assembly not working

My symbol resolution on an x64 NGEN .NET 4.0 assembly it not working.


I have a .NET 4.0 command line assembly that I am compiling using Visual Studio with an x64 configuration. After I compile, I run NGEN (The 64 bit version) on it.

Having failed with XPERF analysing the callstacks (with -stackwalk profile) which won't resolve my symbols. I am now trying Perfmonitor from here:

I have done these steps and would have expected the call stacks to resolve:

  • Start the NGEN'ed x64 app
  • PerfMonitor Collect
  • Perfmonitor Merge
  • Perfmonitor Analyze

... Unfortunately, the stack traces don't work in PerfMonitor either.

I also tried running the app as a 32-bit - same issues. My symbols check out fine with symchk /v

I am at a loss on how to debug this broken stack trace functionality.


Not sure if I understand correctly, but you need to generate profilable NGEN 'assemblies'.

IOW: ngen install ass.dll /profile

You need the xperf Version from the Windows 8 SDK. This version supports .net. Start a trace with the new Performance Recorder UI and this tool generates PDBs for ngened .net components so that xperfview and WPA can decode the callstack.

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