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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.
60 lines
1.9 KiB
Dart
60 lines
1.9 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/gestures.dart';
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import 'package:flutter_test/flutter_test.dart';
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import '../common.dart';
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import 'data/velocity_tracker_data.dart';
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const int _kNumIters = 10000;
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class TrackerBenchmark {
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TrackerBenchmark({required this.name, required this.tracker });
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final VelocityTracker tracker;
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final String name;
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}
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Future<void> main() async {
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assert(false, "Don't run benchmarks in debug mode! Use 'flutter run --release'.");
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final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
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final List<TrackerBenchmark> benchmarks = <TrackerBenchmark>[
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TrackerBenchmark(name: 'velocity_tracker_iteration',
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tracker: VelocityTracker.withKind(PointerDeviceKind.touch)),
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TrackerBenchmark(name: 'velocity_tracker_iteration_ios_fling',
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tracker: IOSScrollViewFlingVelocityTracker(PointerDeviceKind.touch)),
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];
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final Stopwatch watch = Stopwatch();
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await benchmarkWidgets((WidgetTester tester) async {
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for (final TrackerBenchmark benchmark in benchmarks) {
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print('${benchmark.name} benchmark...');
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final VelocityTracker tracker = benchmark.tracker;
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watch.reset();
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watch.start();
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for (int i = 0; i < _kNumIters; i += 1) {
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for (final PointerEvent event in velocityEventData) {
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if (event is PointerDownEvent || event is PointerMoveEvent) {
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tracker.addPosition(event.timeStamp, event.position);
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}
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if (event is PointerUpEvent) {
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tracker.getVelocity();
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}
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}
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}
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watch.stop();
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printer.addResult(
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description: 'Velocity tracker: ${tracker.runtimeType}',
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value: watch.elapsedMicroseconds / _kNumIters,
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unit: 'µs per iteration',
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name: benchmark.name,
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);
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}
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});
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printer.printToStdout();
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}
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