dotnet-stack produces empty output under load

[winnerlein]

I was trying to produce stack traces of a process that was consuming a lot of CPU time. About 80% of time it produced an empty output, the remaining 20% it produced the expected list of stack-traces. Later, after the load dropped, exactly the same invocation worked reliably.

What I'd expect:

• Ideally always produce output
• At least output an error to stderr if it fails
• If this is due to a timeout while waiting for the target process to send data, the ability to increase the timeout

Environment: Windows on AWS t3.large (2 vCPU, x86-64). The target process was w3wp, i.e. an ASP.NET 8 application running in IIS. dotnet-stack was running with elevated privileges. Latest version of dotnet-stack.

dotnet --info

Host:
Version: 8.0.15
Architecture: x64
Commit: 50c4cb9fc3
RID: win-x64

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.35 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.35 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]