react / react/react-native

Performance: Blank app has frame drop on Android

Aperta
#52,046 14 commenti 1 reazione 0 assegnatari Vedi su GitHub

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Needs: Attention Needs: Repro Platform: Android Type: Unsupported Version
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Descrizione

Description

https://github.com/user-attachments/assets/f6b9aae3-5405-43cd-937a-193e022426e2

Steps to reproduce

🐞 Bug Report: Empty Project Drops Below 60 FPS on Interaction

📝 Description

Even with a completely empty React Native project, performance drops significantly when interacting with the screen (e.g., touching anywhere). The frame rate quickly falls below 60 FPS, even though there’s no content or rendering complexity.

📱 Reproduction Steps
1. Create a new React Native project (e.g., using npx react-native init TestApp)
2. Use the following code in App.js:

import React from 'react';
import { View } from 'react-native';

export default function App() {
  return (
    <View style={{ flex: 1 , alignItems:'center', justifyContent:'center', backgroundColor:'pink'}} />
  );
}
3.	Run the app on a physical device
4.	Touch anywhere on the screen

🧪 Expected Behavior

Frame rate should remain at 60 FPS since there’s no content or computation in the app.

❗ Actual Behavior

Frame rate drops immediately after interaction. It feels sluggish even though the app is empty.

https://github.com/user-attachments/assets/f4b65f3f-7475-45d5-a627-dc1041e7d1e4

React Native Version

0.77.2

Affected Platforms

Runtime - Android

Output of npx @react-native-community/cli info
info Fetching system and libraries information...
System:
  OS: macOS 15.2
  CPU: (8) arm64 Apple M1 Pro
  Memory: 647.45 MB / 32.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.18.1
    path: ~/.nvm/versions/node/v20.18.1/bin/node
  Yarn:
    version: 1.22.22
    path: ~/.nvm/versions/node/v20.18.1/bin/yarn
  npm:
    version: 10.8.2
    path: ~/.nvm/versions/node/v20.18.1/bin/npm
  Watchman:
    version: 2025.04.28.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /Users/brian/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.2
      - iOS 18.2
      - macOS 15.2
      - tvOS 18.2
      - visionOS 2.2
      - watchOS 11.2
  Android SDK: Not Found
IDEs:
  Android Studio: 2022.1 AI-221.6008.13.2211.9619390
  Xcode:
    version: 16.2/16C5032a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 24.0.1
    path: /usr/bin/javac
  Ruby:
    version: 2.7.6
    path: /Users/brian/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 16.0.2
    wanted: 16.0.2
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.77.2
    wanted: 0.77.2
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

info React Native v0.80.0 is now available (your project is running on v0.77.2).
info Changelog: https://github.com/facebook/react-native/releases/tag/v0.80.0
info Diff: https://react-native-community.github.io/upgrade-helper/?from=0.77.2&to=0.80.0
info For more info, check out "https://reactnative.dev/docs/upgrading?os=macos".
Stacktrace or Logs
info Fetching system and libraries information...
System:
  OS: macOS 15.2
  CPU: (8) arm64 Apple M1 Pro
  Memory: 647.45 MB / 32.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.18.1
    path: ~/.nvm/versions/node/v20.18.1/bin/node
  Yarn:
    version: 1.22.22
    path: ~/.nvm/versions/node/v20.18.1/bin/yarn
  npm:
    version: 10.8.2
    path: ~/.nvm/versions/node/v20.18.1/bin/npm
  Watchman:
    version: 2025.04.28.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /Users/brian/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.2
      - iOS 18.2
      - macOS 15.2
      - tvOS 18.2
      - visionOS 2.2
      - watchOS 11.2
  Android SDK: Not Found
IDEs:
  Android Studio: 2022.1 AI-221.6008.13.2211.9619390
  Xcode:
    version: 16.2/16C5032a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 24.0.1
    path: /usr/bin/javac
  Ruby:
    version: 2.7.6
    path: /Users/brian/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 16.0.2
    wanted: 16.0.2
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.77.2
    wanted: 0.77.2
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

info React Native v0.80.0 is now available (your project is running on v0.77.2).
info Changelog: https://github.com/facebook/react-native/releases/tag/v0.80.0
info Diff: https://react-native-community.github.io/upgrade-helper/?from=0.77.2&to=0.80.0
info For more info, check out "https://reactnative.dev/docs/upgrading?os=macos".
MANDATORY Reproducer

.

Screenshots and Videos

No response

Guida per i contributori

Apri la guida per i contributori

Come iniziare

  1. Leggi tutta la issue e poi la guida ai contributi del progetto.
  2. Commenta sulla issue per dire che te ne occupi tu — evita che due persone facciano lo stesso lavoro.
  3. Fai un fork del repository e lavora su un branch.
  4. Apri una pull request che faccia riferimento al numero della issue.

Direzione di ricerca

Inizia riproducendo l’app vuota React Native 0.77.2 su un dispositivo Android fisico usando l’esempio App.js, con Hermes e la nuova architettura abilitati. Confronta le prestazioni dell’interazione con i video e i dettagli dell’ambiente forniti; il lavoro è completato quando viene identificata una causa riproducibile e vengono ripristinati 60 FPS stabili durante l’interazione touch.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Valutazione

Stack tecnologico
android, javascript, react-native
Ambito
mobile, performance
Tipo di issue
Bug
Difficoltà
4/5
Tempo stimato
3-5 giorni
Stato di attività
Tranquilla
Chiarezza
Da chiarire
Idoneità per principianti
42/100

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