[Proposal]Profiling memory usage per isolate

[srmncnk]

Use case

I would like to profile memory usage of my app per isolate. Currently in profiler I can't find a way to separate allocations per each isolate. I tried to do it programatically by connecting to the websocket of the profiling session, but even after a few attempts to get allocations per isolate, I don't really trust the results. I'm using flutter_isolate and background_locator plugins which basically create their own FlutterEngine.

Proposal

I'd like to have a combo box in the profiles which separates allocations for each isolate.

[maheshj01]

Seems like a valid proposal to me

[srmncnk]

Is there any workaround for this? I want to profile my app on Android, where I run a foreground service and create a separate FlutterEngine. I don't think profiler covers that separate FlutterEngine / isolate.

[kenzieschmoll]

In the DevTools Memory tool you can select a target isolate from the selector at the bottom center of DevTools footer:

[elliette]

A customer at Fluttercon showed me this issue in their local setup, so I believe this is still an issue.