[Windows build perf] FindAotCompiler takes too long

[emaf]

When building from Windows, FindAotCompiler sometimes takes aroung 10 seconds to calculate the AOT compile path (if the info is not already cached). It is a bit weird because restoring and running a target should not take that long.

For instance, in this log you can see it took 10.272s in total, and remoting a task takes around 200ms, so the executing itself took around 10 seconds:

Build Logs

Binlogs.zip

[rolfbjarne]

If you set the FindILLinkKeepKeepTemporaryOutput=true property in the csproj, we'll keep the binlogs from the evaluation on the Mac - can you do that and attach these binlogs? That will hopefully clarify a bit better where the time is spent.