proposal: runtime: expose internal/trace package

[povilasv]

This is a feature request, not a bug.

I'm helping to build conprof, which is a continuous profiling application similiar to Google Wide Profiling. We would like to add support for Go's trace profiles (typically /debug/pprof/trace endpoint).

In order to do that we would need to have internal/trace package to be exposed.

Related conprof issue: parca-dev/parca#46

[rsc]

internal/trace and the trace format itself almost certainly need to be rewritten to make it easier to load only a subset of the file. The current format basically requires loading the entire file to do anything useful, and that fails for large traces.

We should definitely not expose internal/trace in its current form. It's fine to copy if you need something soon.

[povilasv]

Thanks for the answer. Is there an issue for rewrite and what needs to happen? Would like to take a look at it, maybe I can help.

[rsc]

There isn't active work on that. I'd say just copy the package (as the license permits) and modify to suit your needs.

[prattmic]

I believe this is superseded by #62627. Please holler if I misunderstand.