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Performance tools for Flutter

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Fixes #6902 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page,...

release-notes-not-required

If the devtools is connected to a running flutter app, it should auto-load the project and deep links instead of let user manually input the project path. ## Pre-launch Checklist...

release-notes-not-required

Steps to repro: 1. Run DevTools with experiments 2. Connect to an app in debug mode 3. Open memory screen 4. See popup message 5. Do not close the message...

We want user to be able to take heap snapshots in release mode and analyze them later in DevTools > Memory > Diff How to take snapshot in release mode:...

memory page > diff
P1

This is necessary due to https://github.com/dart-lang/sdk/issues/55137. If the performance issue can be fixed first, we will not need to add a setting for this and can include cpu samples by...

performance page > perfetto
P1

### Use case I want to be able to preview the Flutter application in different screen sizes. ![](https://github.com/aloisdeniel/flutter_device_preview/raw/master/device_preview.gif) ### Proposal There's an existing package https://pub.dev/packages/device_preview , but it was abandoned...

new feature
ui debugging

We are attempting a workflow where we use our CD flow in GitHub Actions to build the artifacts for our devtool extension on rohd and push them to a separate...

devtools extensions

**Reproduction Steps:** 1. Comment out `--disable-vm-service` flag from `packages/flutter_tools/lib/src/test/runner.dart` 2. Run `flutter test --experimental-faster-testing test/material` in `flutter/packages/flutter/` 3. Copy the VM service URI into DevTools DevTools will fail to connect...

bug
P1

I'd like to profile my Windows application from VS Code using Devtools' Performance view. Whenever I select the page, I get a popup with the following error: Oops, something went...

bug
performance page > perfetto