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Slow image download time with dart.io #47055

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minikin opened this issue Aug 31, 2021 · 2 comments
Open

Slow image download time with dart.io #47055

minikin opened this issue Aug 31, 2021 · 2 comments
Labels
area-vm Use area-vm for VM related issues, including code coverage, FFI, and the AOT and JIT backends. library-io triaged Issue has been triaged by sub team type-performance Issue relates to performance or code size

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@minikin
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minikin commented Aug 31, 2021

In some cases, an image download time can be too slow.
We believe that this issue is more likely related to dart.io, but we might be wrong.
Anyway, we decided to post it here because this issue affects the Flutter app which we develop.

Please, try to run this example to collect data.

Please note, that we did many measurements in different locations with different set-ups and different images.
Here are some results:

# Results
1 Average: 1553.8075 ms,+/- 2434.0 ms, Max: 5094 ms
2 Average: 1441.09 ms, +/- 1788.5 ms, Max: 3668 ms
3 Average: 1455.44 ms, +/- 1897.5 ms, Max: 3939 ms
4 Average: 1324.1525 ms, +/- 2175.0 ms, Max: 4543 ms
5 Average: 1137.925 ms, +/- 1571.0 ms, Max: 3215 ms
Selected logs: Average: 875.2375 ms, +/- 1197.0 ms, Max: 2503 ms

Launching lib/main.dart on macOS in profile mode...

Connecting to VM Service at ws://127.0.0.1:50924/Q0bL61y_fak=/ws

flutter: 193
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flutter: 2305
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flutter: 2301

flutter doctor -v 
🚀: flutter doctor -v
[✓] Flutter (Channel stable, 2.2.2, on macOS 11.4 20F71 darwin-x64, locale en-DE)
  • Flutter version 2.2.2 at /Users/user_name/fvm/versions/2.2.2
  • Framework revision d79295af24 (3 months ago), 2021-06-11 08:56:01 -0700
  • Engine revision 91c9fc8fe0
  • Dart version 2.13.3

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
  • Android SDK at /Users/user_name/Library/Android/sdk
  • Platform android-31, build-tools 30.0.2
  • ANDROID_HOME = /Users/user_name/Library/Android/sdk
  • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
  • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
  ✗ Android license status unknown.
    Run `flutter doctor --android-licenses` to accept the SDK licenses.
    See https://flutter.dev/docs/get-started/install/macos#android-setup for more details.

[✓] Xcode - develop for iOS and macOS
  • Xcode at /Applications/Xcode.app/Contents/Developer
  • Xcode 12.5.1, Build version 12E507
  • CocoaPods version 1.10.1

[✓] Chrome - develop for the web
  • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.2)
  • Android Studio at /Applications/Android Studio.app/Contents
  • 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 11.0.8+10-b944.6916264)

[✓] VS Code (version 1.59.1)
  • VS Code at /Applications/Visual Studio Code.app/Contents
  • Flutter extension version 3.25.0

[✓] Connected device (2 available)
  • macOS (desktop) • macos  • darwin-x64     • macOS 11.4 20F71 darwin-x64
  • Chrome (web)    • chrome • web-javascript • Google Chrome 92.0.4515.159

! Doctor found issues in 1 category.
@minikin
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minikin commented Aug 31, 2021

In the first place, I posted this issue here but it was close because example it doesn't have any packages related to flutter. So I'm posting it here.

@keertip keertip added the area-core-library SDK core library issues (core, async, ...); use area-vm or area-web for platform specific libraries. label Sep 1, 2021
@lrhn lrhn added library-io type-performance Issue relates to performance or code size labels Sep 1, 2021
@brianquinlan brianquinlan added P2 A bug or feature request we're likely to work on library-io-triaged labels Dec 14, 2022
@a-siva a-siva added triaged Issue has been triaged by sub team and removed library-io-triaged labels Dec 20, 2022
@lrhn lrhn added area-vm Use area-vm for VM related issues, including code coverage, FFI, and the AOT and JIT backends. and removed area-core-library SDK core library issues (core, async, ...); use area-vm or area-web for platform specific libraries. labels Apr 21, 2024
@a-siva
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a-siva commented Jun 7, 2024

An attempt was made to speed this up here flutter/flutter#34188 but due to some testing infrastructure issues the optimization was not turned on.

@a-siva a-siva removed the P2 A bug or feature request we're likely to work on label Jun 7, 2024
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