Flutter desktop Windows Release High CPU usage #78517
Description
Flutter app Windows release used too much cpu. (Single core occupies up to 100%)
Details
Target Platform: Windows
Target OS version/browser: Windows 10 20H2 (19042.867) Windows Feature Experience Pack 120.2212.551.0
Devices: Intel(R) Core(TM) i5-9300H
Steps to reproduce
flutter create windows_test
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("Windows Test"),
),
),
);
}
}
flutter build windows- run
windows_test\build\windows\runner\Release\windows_test.exe
Logs
Logs
PS C:\Users\me\project\windows_test> flutter analyze
Analyzing windows_test...
No issues found! (ran in 1.4s)
PS C:\Users\me\project\windows_test>
PS C:\Users\me\project\windows_test> flutter doctor -v
[√] Flutter (Channel master, 2.1.0-13.0.pre.159, on Microsoft Windows [Version 10.0.19042.867], locale zh-CN)
• Flutter version 2.1.0-13.0.pre.159 at C:\Users\me\AppData\Local\Android\flutter
• Framework revision e8c3ce6bd1 (2 hours ago), 2021-03-17 22:13:13 -0700
• Engine revision b5091d6a7d
• Dart version 2.13.0 (build 2.13.0-148.0.dev)
• Pub download mirror http://127.0.0.1:59776/pub
• Flutter download mirror http://127.0.0.1:59776/storage
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at C:\Users\me\AppData\Local\Android\Sdk
• Platform android-30, build-tools 30.0.3
• ANDROID_HOME = C:\Users\me\AppData\Local\Android\Sdk
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
X Android license status unknown.
Run `flutter doctor --android-licenses` to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.8.5)
• Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
• Visual Studio Community 2019 version 16.8.31005.135
• Windows 10 SDK version 10.0.18362.0
[√] Android Studio (version 4.1.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
[√] IntelliJ IDEA Ultimate Edition (version 2020.3)
• IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA 2020.3.2
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
[√] VS Code (version 1.54.2)
• VS Code at C:\Users\me\AppData\Local\Programs\Microsoft VS Code
• Flutter extension can be installed from:
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[√] Connected device (3 available)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19042.867]
• Chrome (web) • chrome • web-javascript • Google Chrome 89.0.4389.90
• Edge (web) • edge • web-javascript • Microsoft Edge 89.0.774.54
! Doctor found issues in 1 category.