[Instrumentation.Runtime] Future plans

[joegoldman2]

With the introduction of built-in runtime metrics in .NET 9 (dotnet/runtime#104680), I wanted to understand the future plans for OpenTelemetry.Instrumentation.Runtime. Specifically:

• Will the package continue to be maintained and supported for .NET version before 9?
• Are there any plans to phase it out for users who are using .NET 9 or newer?

[Kielek]

@twenzel, @xiang17 FYI

[Kielek]

I would say, that we should keep this package.

For .NET Framework and .NET8 (I assume that .NET6 will be removed) we should keep current behavior. For .NET9+ we should register System.Runtime in meter.

We have similar behavior for AspNetCore already.

[twenzel]

@Kielek sounds good to me.

[xiang17]

Agree to keep current behavior for existing use cases.