Issue moved from dotnet/maui#10237

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From @msftbot[bot] on Wednesday, September 21, 2022 6:14:59 PM

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.

Recording custom profiles is not yet fully supported in .NET 6 and 7. I have an experimental package to enable this at:

https://github.com/jonathanpeppers/Mono.Profiler.Android

We began the process of replacing libmono-profiler-aot.so with new .NET features:

• Support for Android "Profiled AOT" in .NET 6 runtime#56989 (comment)
• [WIP] new Profiled AOT support #7216

It was not ready in time for .NET 7, but we may be able to revisit in .NET 8.

any news on this front?

This lists the blockers:

• [WIP] new Profiled AOT support #7216

I think the main issue, is dotnet-pgo is not distributed on NuGet.org. So waiting from the .NET teamt to see how that could be released where we can depend on it.

@jonathanpeppers but i successfully managed to record a profile using that experimental nuget just by specifying the android TF. That's exactly what the OP was missing in order for it to work. Or we shouldn't use that package anymore and wait?

@themronion you can use the experimental package, it's what we still use for the Android and MAUI workloads:

https://github.com/dotnet/maui/blob/0e61f5ecc51c65d8fa0bbfce89e8c5774d0e417f/src/ProfiledAot/src/Directory.Build.targets#L10

@jonathanpeppers Am I correct that using mibc profiles is not yet possible in MAUI .NET8 or there is any way to benefit from using them?

The questions in using .mibc are listed here:

• [WIP] new Profiled AOT support #7216

It might be something that comes in .NET 9, but the only benefit being it's "more supported" than the old Mono format.