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