How to measure the performance of your application on Flutter

Published: 09 June 2024
on channel: How To Make

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Here are several ways to measure the performance of your Flutter application:

1. DevTools Performance View:

This is a built-in tool within Flutter DevTools that allows you to analyze frame rendering times and identify performance bottlenecks. It provides valuable insights like:
Flutter frames chart (visualizes frame rendering times)
Frame analysis tab (details on individual frames)
Raster stats tab (statistics on rasterization)
Steps:

Ensure you're running your app in profile mode (not debug mode) for accurate performance measurement. Use flutter run --profile command.
Launch Flutter DevTools (usually by shaking your device or using the menu option in your IDE).
Navigate to the Performance view.
2. Observatory:

Observatory is a powerful tool for analyzing your Dart application's performance and memory usage. It offers features like:
Inspecting the heap snapshot to identify memory leaks
Profiling CPU usage to pinpoint performance bottlenecks

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