mirror of
https://github.com/flutter/flutter.git
synced 2025-06-03 00:51:18 +00:00
8c264775bf
Reverts: flutter/flutter#154374
Initiated by: jtmcdole
Reason for reverting: A different benchmark was using the microbenchmark parser and timing out.
Original PR Author: jtmcdole
Reviewed By: {zanderso}
This change reverts the following previous change:
Two things:
**Re-land**: Uninstall microbenchmarks before running them.
Flakes in #153828 stem from adb saying the app isn't installed, but then failing to install wtih `-r`. Several other tests uninstall the app before trying to run it. Previous fix called uninstall between tests, but iOS takes 12 to 13 seconds to perform uninstall / install, which timed out the test. Just uninstall the one time since we only care about any lingering apps with different keys.
Potential solution #153828
**Make things go fast**
Instead of installing 21 different compilations of the same app to get results; compile and run them together. Locally on Mac+iOS, this should takes ~3 minutes instead of ~15 minutes.
68 lines
2.2 KiB
Dart
68 lines
2.2 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
import 'package:flutter/material.dart';
|
|
import 'package:flutter/rendering.dart';
|
|
import 'package:flutter_test/flutter_test.dart';
|
|
|
|
import '../common.dart';
|
|
|
|
const Duration kBenchmarkTime = Duration(seconds: 15);
|
|
|
|
// Use an Align to loosen the constraints.
|
|
final Widget intrinsicTextHeight = Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: Align(
|
|
child: IntrinsicHeight(
|
|
child: Text('A' * 100),
|
|
),
|
|
),
|
|
);
|
|
|
|
Future<void> main() async {
|
|
assert(false, "Don't run benchmarks in debug mode! Use 'flutter run --release'.");
|
|
|
|
// We control the framePolicy below to prevent us from scheduling frames in
|
|
// the engine, so that the engine does not interfere with our timings.
|
|
final LiveTestWidgetsFlutterBinding binding = TestWidgetsFlutterBinding.ensureInitialized() as LiveTestWidgetsFlutterBinding;
|
|
|
|
final Stopwatch watch = Stopwatch();
|
|
int iterations = 0;
|
|
|
|
await benchmarkWidgets((WidgetTester tester) async {
|
|
runApp(intrinsicTextHeight);
|
|
// Wait for the UI to stabilize.
|
|
await tester.pump(const Duration(seconds: 1));
|
|
|
|
final TestViewConfiguration big = TestViewConfiguration.fromView(
|
|
size: const Size(360.0, 640.0),
|
|
view: tester.view,
|
|
);
|
|
final TestViewConfiguration small = TestViewConfiguration.fromView(
|
|
size: const Size(100.0, 640.0),
|
|
view: tester.view,
|
|
);
|
|
final RenderView renderView = WidgetsBinding.instance.renderViews.single;
|
|
binding.framePolicy = LiveTestWidgetsFlutterBindingFramePolicy.benchmark;
|
|
|
|
watch.start();
|
|
while (watch.elapsed < kBenchmarkTime) {
|
|
renderView.configuration = iterations.isEven ? big : small;
|
|
await tester.pumpBenchmark(Duration(milliseconds: iterations * 16));
|
|
iterations += 1;
|
|
}
|
|
watch.stop();
|
|
});
|
|
|
|
|
|
final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
|
|
printer.addResult(
|
|
description: 'Text intrinsic height',
|
|
value: watch.elapsedMicroseconds / iterations,
|
|
unit: 'µs per iteration',
|
|
name: 'text_intrinsic_height_iteration',
|
|
);
|
|
printer.printToStdout();
|
|
}
|