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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.
51 lines
1.2 KiB
Dart
51 lines
1.2 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/foundation.dart';
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import '../common.dart';
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const int _kNumIterations = 10;
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const int _kNumWarmUp = 100;
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class Data {
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Data(this.value);
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final int value;
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@override
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String toString() => 'Data($value)';
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}
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List<Data> test(int length) {
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return List<Data>.generate(length,
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(int index) => Data(index * index));
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}
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Future<void> execute() async {
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assert(false, "Don't run benchmarks in debug mode! Use 'flutter run --release'.");
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// Warm up lap
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for (int i = 0; i < _kNumWarmUp; i += 1) {
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await compute(test, 10);
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}
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final Stopwatch watch = Stopwatch();
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watch.start();
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for (int i = 0; i < _kNumIterations; i += 1) {
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await compute(test, 1000000);
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}
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final int elapsedMicroseconds = watch.elapsedMicroseconds;
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final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
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const double scale = 1000.0 / _kNumIterations;
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printer.addResult(
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description: 'compute',
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value: elapsedMicroseconds * scale,
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unit: 'ns per iteration',
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name: 'compute_iteration',
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);
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printer.printToStdout();
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}
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