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Performance tools for Flutter

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i got an exception when exporting a snapshot: ![Screenshot 2024-03-22 at 10 45 55 AM](https://github.com/flutter/devtools/assets/43759233/25bb2828-8660-401e-a462-9df76c13c05a) ![Screenshot 2024-03-22 at 10 45 20 AM](https://github.com/flutter/devtools/assets/43759233/66941a0a-a702-41b2-93ae-38735074f7bd) This was running against a Dart CLI app.

screen: memory
memory > diff
P1

Culprit that caused the regression: https://github.com/flutter/devtools/pull/7445 After speaking with @stevegolton on the Perfetto team, the hypothesis is that this was caused by plugin initialization added in https://github.com/google/perfetto/commit/24a0d91beab59e22c1f1e0d720e3cdb417796f55 (first included in...

screen: performance
tech debt
performance > perfetto
P1

Stack trace: Error at Object.qb (http://127.0.0.1:9100/main.dart.js:6165:18) at http://127.0.0.1:9100/main.dart.js:160301:5 at bDg.a (http://127.0.0.1:9100/main.dart.js:4774:62) at bDg.$2 (http://127.0.0.1:9100/main.dart.js:56680:14) at Object.m (http://127.0.0.1:9100/main.dart.js:4760:10) at za.aD6 (http://127.0.0.1:9100/main.dart.js:160315:10) at za.cb (http://127.0.0.1:9100/main.dart.js:160294:25) at za.jD (http://127.0.0.1:9100/main.dart.js:160279:13) at il.jD (http://127.0.0.1:9100/main.dart.js:88646:44) at...

![Screenshot 2024-03-27 at 1 12 02 PM](https://github.com/flutter/devtools/assets/43759233/e5cda8ee-e09d-4500-8c8f-c2cb5d5008cf) Example run: https://github.com/flutter/devtools/actions/runs/8456968958?pr=7475

infra
fix it friday
P3

Contributes to https://github.com/flutter/devtools/issues/7425

release-notes-not-required

bug hotlist: 4148010 - [ ] support a dark theme: b/246338404 - [ ] Configurable track order from post message API: b/259303986 - [ ] register a notifyOnSelected handler in...

performance page
blocked
performance page > perfetto

___ **DevTools version**: 2.31.1 **IDE**: VSCode **Connected Device**: CPU / OS: x64 (64 bit) android Connected app type: Flutter native (debug build) Dart Version: 3.3.0 Flutter Version: 3.19.2 / stable...

network page

(Why error reporting is for googlers only? ) Reported bug: b/330902003 It is not 100% reproducible. Rough steps: 1. Run devtools on chrome in profile mode 2. Connect to counter...

![Screenshot 2024-03-22 at 10 50 16 AM](https://github.com/flutter/devtools/assets/43759233/d2a8b7ee-e7fd-41f8-ac1c-6cc6b4ae7043)

memory page
P2

Steps: 1. Run devtools in profile mode for web 2. Connect to counter on mac 3. Click a frame on chart on performance tab [dart_devtools_2024-03-22_10_22_57.690.json](https://github.com/flutter/devtools/files/14726395/dart_devtools_2024-03-22_10_22_57.690.json)

performance page
performance page > perfetto
P1