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# Benchmarks
# benchmarks
A repository to benchmark Flutter libs.
Creators of the tested libs can suggest improvements, as long as they follow the same design structure.
Start the project, compile in PROFILE MODE (the debug mode is inconsistent for checking benchmarks), open the Dart inspector, and check the amount of ram used.
# 1- State Managers
To be fair, the test was done twice: after the state changes, and after Dart's garbage collection (by manually pressing the garbage collector on the dart inspect).
![](benchmark.png)
Start testing and see for yourself.
The idle application consumes 4.288k of ram.
Items were added dynamically to a ListView.
The amount of RAM was measured after the test, and the following calculation was made:
Number of RAM consumed by the app after testing with the state manager - RAM in idle state without any state manager.
The test measures RAM consumption, so the lower the better.
## No GC
Mobx = 4.58
Bloc = 4.56
Redux = 4.56
Bloc-Lib = 4.55
Provider = 4.55
GetX = 4.53
Get = 4.53
## GC
Bloc-lib = 4.22
Mobx = 4.18
Bloc = 4.16
Redux = 4.16
Provider = 4.15
Get = 4.14
GetX = 4.13
In addition to the RAM calculation, the size of the apk was also observed after compilation. And we had the following results:
- flutter_bloc: 8.3mb
- mobx: 8.3mb
- provider: 8.3mb
- redux: 8.2mb
- get: 8.2mb
- getx: 8.2mb
The creators of flutter_bloc and provider made changes to use their library. If you want to make changes (within the scope of the project, without eliminating classes), you can do so by offering a PR.
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MTL_ENABLE_DEBUG_INFO = NO;
SDKROOT = iphoneos;
TARGETED_DEVICE_FAMILY = "1,2";
VALIDATE_PRODUCT = YES;
};
name = Release;
};
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baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
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ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
CURRENT_PROJECT_VERSION = 1;
ENABLE_BITCODE = NO;
FRAMEWORK_SEARCH_PATHS = (
"$(inherited)",
"$(PROJECT_DIR)/Flutter",
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INFOPLIST_FILE = Runner/Info.plist;
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LIBRARY_SEARCH_PATHS = (
"$(inherited)",
"$(PROJECT_DIR)/Flutter",
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PRODUCT_BUNDLE_IDENTIFIER = de.udos.flutterStateManagement;
PRODUCT_NAME = "$(TARGET_NAME)";
VERSIONING_SYSTEM = "apple-generic";
};
name = Debug;
};
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baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
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ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
CURRENT_PROJECT_VERSION = 1;
ENABLE_BITCODE = NO;
FRAMEWORK_SEARCH_PATHS = (
"$(inherited)",
"$(PROJECT_DIR)/Flutter",
);
INFOPLIST_FILE = Runner/Info.plist;
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
LIBRARY_SEARCH_PATHS = (
"$(inherited)",
"$(PROJECT_DIR)/Flutter",
);
PRODUCT_BUNDLE_IDENTIFIER = de.udos.flutterStateManagement;
PRODUCT_NAME = "$(TARGET_NAME)";
VERSIONING_SYSTEM = "apple-generic";
};
name = Release;
};
/* End XCBuildConfiguration section */
/* Begin XCConfigurationList section */
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buildConfigurations = (
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defaultConfigurationIsVisible = 0;
defaultConfigurationName = Release;
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/* End XCConfigurationList section */
};
rootObject = 97C146E61CF9000F007C117D /* Project object */;
}
import 'package:benckmark/_bloc_lib/_shared/entitity.dart';
import 'package:benckmark/_bloc_lib/_shared/item.entity.dart';
import 'items.events.dart';
import 'items.state.dart';
class ItemsBloc extends EntityBloc<EntityEvent, ItemsState> {
@override
ItemsState get initialState => ItemsState(sampleItems);
@override
Stream<ItemsState> mapEventToState(EntityEvent event) async* {
if (event is AddItemEvent) {
final List<Item> items = List.from(state.entities)..add(event.item);
yield ItemsState(items);
} else if (event is AddItemsEvent) {
final List<Item> items = List.from(state.entities)..addAll(event.items);
yield ItemsState(items);
} else if (event is RemoveItemsEvent) {
final List<Item> items = List.from(state.entities);
items.removeWhere((item) => event.itemIds.contains(item.id));
yield ItemsState(items);
}
}
}
import 'package:benckmark/_bloc_lib/_shared/entitity.dart';
import 'package:benckmark/_bloc_lib/_shared/item.entity.dart';
class AddItemEvent extends EntityEvent<Item> {
final Item item;
AddItemEvent(this.item);
@override
List<Object> get props => [item];
}
class AddItemsEvent extends EntityEvent<Item> {
final List<Item> items;
AddItemsEvent(this.items);
@override
List<Object> get props => [items];
}
class RemoveItemsEvent extends EntityEvent<Item> {
final List<String> itemIds;
RemoveItemsEvent(this.itemIds);
@override
List<Object> get props => [itemIds];
}
import 'package:benckmark/_bloc_lib/_shared/entitity.dart';
import 'package:benckmark/_bloc_lib/_shared/item.entity.dart';
class ItemsState extends EntityState<Item> {
ItemsState([List<Item> items = const []]) : super(items);
}
import 'package:bloc/bloc.dart';
import 'package:equatable/equatable.dart';
import 'package:meta/meta.dart';
import 'package:uuid/uuid.dart';
@immutable
class Entity extends Equatable {
final String id;
Entity([String id]) : this.id = id ?? Uuid().v4();
@override
List<Object> get props => [id];
}
@immutable
abstract class EntityEvent<E extends Entity> extends Equatable {}
@immutable
class EntityState<E extends Entity> extends Equatable {
final Map<String, E> dictionary;
final List<String> ids;
final List<E> entities;
EntityState([this.entities = const []])
: dictionary = Map.fromIterable(entities,
key: (entity) => entity.id, value: (entity) => entity),
ids = List.from(entities.map((entity) => entity.id));
@override
List<Object> get props => [dictionary, ids, entities];
}
abstract class EntityBloc<Event extends EntityEvent, State extends EntityState>
extends Bloc<Event, State> {}
import 'package:meta/meta.dart';
import 'entitity.dart';
@immutable
class Item extends Entity {
final String title;
Item({String id, this.title}) : super();
@override
List<Object> get props => super.props..addAll([id, title]);
}
final List<Item> sampleItems = [
Item(title: 'Item 1'),
Item(title: 'Item 2'),
Item(title: 'Item 3')
];
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:benckmark/_bloc_lib/_blocs/items/items.bloc.dart';
import 'package:benckmark/_bloc_lib/_blocs/items/items.events.dart';
import 'package:benckmark/_bloc_lib/_blocs/items/items.state.dart';
import 'package:benckmark/_bloc_lib/_shared/item.entity.dart';
class App extends StatelessWidget {
Widget build(BuildContext context) {
return MultiBlocProvider(
providers: [
BlocProvider<ItemsBloc>(
create: (context) => ItemsBloc(),
),
],
child: MaterialApp(
title: 'BLoC Lib Sample',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Page(
title: 'BLoC Lib Sample',
),
),
);
}
}
class Page extends StatefulWidget {
Page({
Key key,
this.title,
}) : super(key: key);
final String title;
@override
_PageState createState() => _PageState();
}
class _PageState extends State<Page> {
@override
void initState() {
fill();
super.initState();
}
fill() async {
for (int i = 0; i < 10; i++) {
await Future.delayed(Duration(milliseconds: 500));
BlocProvider.of<ItemsBloc>(context)
.add(AddItemEvent(Item(title: DateTime.now().toString())));
}
print("It's done. Print now!");
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: ListViewWidget(),
);
}
}
class ListViewWidget extends StatelessWidget {
@override
Widget build(BuildContext context) {
// ignore: close_sinks
final _itemsBloc = BlocProvider.of<ItemsBloc>(context);
return BlocBuilder<ItemsBloc, ItemsState>(
bloc: _itemsBloc,
builder: (context, entityState) {
return ListView.builder(
padding: EdgeInsets.fromLTRB(0.0, 8.0, 0.0, 8.0),
itemCount: entityState.entities.length,
itemBuilder: (context, index) {
final item = entityState.entities[index];
return ListTile(
title: Text(item.title),
);
},
);
},
);
}
}
# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/
# IntelliJ related
*.iml
*.ipr
*.iws
.idea/
# The .vscode folder contains launch configuration and tasks you configure in
# VS Code which you may wish to be included in version control, so this line
# is commented out by default.
#.vscode/
# Flutter/Dart/Pub related
**/doc/api/
**/ios/Flutter/.last_build_id
.dart_tool/
.flutter-plugins
.flutter-plugins-dependencies
.packages
.pub-cache/
.pub/
/build/
# Web related
lib/generated_plugin_registrant.dart
# Symbolication related
app.*.symbols
# Obfuscation related
app.*.map.json
# Exceptions to above rules.
!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
... ...
# Flutter State Management
... ...
import 'dart:async';
import 'package:bloc/bloc.dart';
import 'package:benckmark/item.dart';
part 'items_event.dart';
class ItemsBloc extends Bloc<ItemsEvent, List<Item>> {
ItemsBloc() {
Timer.periodic(const Duration(milliseconds: 500), (timer) {
add(AddItemEvent(Item(title: DateTime.now().toString())));
if (state.length == 10) {
timer.cancel();
print("It's done. Print now!");
}
});
}
@override
List<Item> get initialState => sampleItems;
@override
Stream<List<Item>> mapEventToState(ItemsEvent event) async* {
if (event is AddItemEvent) {
yield List.from(state)..add(event.item);
}
}
}
... ...
part of 'items_bloc.dart';
abstract class ItemsEvent {}
class AddItemEvent extends ItemsEvent {
AddItemEvent(this.item);
final Item item;
}
... ...
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:benckmark/item.dart';
import 'package:benckmark/_bloc_lib/_blocs/items/items_bloc.dart';
class App extends StatelessWidget {
Widget build(BuildContext context) {
return MaterialApp(
title: 'BLoC Lib Sample',
theme: ThemeData(primarySwatch: Colors.blue),
home: BlocProvider(
create: (_) => ItemsBloc(),
child: Page(title: 'BLoC Lib Sample'),
),
);
}
}
class Page extends StatelessWidget {
const Page({Key key, this.title}) : super(key: key);
final String title;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text(title)),
body: BlocBuilder<ItemsBloc, List<Item>>(
builder: (context, items) {
return ListView.builder(
padding: EdgeInsets.fromLTRB(0.0, 8.0, 0.0, 8.0),
itemCount: items.length,
itemBuilder: (context, index) {
return ListTile(title: Text(items[index].title));
},
);
},
),
);
}
}
... ...