Support export to JFR

[viluon]

Is your feature request related to a problem? Please describe.

Some external analysis tools, like the Firefox Profiler or Perfetto, don't support the pprof format. However, they do support JFR (perhaps after some conversion steps).

Describe the solution you'd like

Since the Java SDK already uploads continuous profiles to Pyroscope in JFR format, it would be very useful to be able to dump this data directly from the UI.

Describe alternatives you've considered

There are analysis UIs that support pprof natively, such as Speedscope, but they lack Firefox Profiler features.

[korniltsev]

Our JFR ingestion is lossy. The JFR is converted to pprof, loosing some data( like event timestamps, thread names, thread states, allocation types, etc). While it is probably possible to convert pprof back to JFR, it would not recover the lost data.
I think you can export to pprof and then convert to JFR if needed yourself today.

[viluon]

I see. Perhaps I should open issues for richer data ingestion, so that the original information can in fact be recovered. What do you think?