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7aace1c5f9
**Three things** Re-lands #154374 New: fix `platform_channels_benchmarks` to print the "done" key. Updated notes for the microbenchmark parser. There are no other users of `microbenchmarks.readJsonResults`. Re-Re-land: Uninstall microbenchmarks before running them. Flakes in https://github.com/flutter/flutter/issues/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 https://github.com/flutter/flutter/issues/153828 Re-land 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.
48 lines
1.6 KiB
Dart
48 lines
1.6 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/services.dart' show PlatformAssetBundle;
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import 'package:flutter/widgets.dart';
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import '../common.dart';
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const int _kBatchSize = 100;
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const int _kNumIterations = 100;
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Future<void> execute() async {
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assert(false,
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"Don't run benchmarks in debug mode! Use 'flutter run --release'.");
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final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
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WidgetsFlutterBinding.ensureInitialized();
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final Stopwatch watch = Stopwatch();
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final PlatformAssetBundle bundle = PlatformAssetBundle();
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final List<double> values = <double>[];
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for (int j = 0; j < _kNumIterations; ++j) {
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double tally = 0;
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watch.reset();
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watch.start();
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for (int i = 0; i < _kBatchSize; i += 1) {
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// We don't load images like this. PlatformAssetBundle is used for
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// other assets (like Rive animations). We are using an image because it's
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// conveniently sized and available for the test.
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tally += (await bundle.load('packages/flutter_gallery_assets/places/india_pondicherry_salt_farm.png')).lengthInBytes;
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}
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watch.stop();
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values.add(watch.elapsedMicroseconds.toDouble() / _kBatchSize);
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if (tally < 0.0) {
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print("This shouldn't happen.");
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}
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}
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printer.addResultStatistics(
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description: 'PlatformAssetBundle.load 1MB',
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values: values,
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unit: 'us per iteration',
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name: 'PlatformAssetBundle_load_1MB',
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);
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printer.printToStdout();
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}
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