mirror of
https://github.com/flutter/flutter
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142 lines
4.9 KiB
Dart
142 lines
4.9 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 'dart:ui';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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group(FrameTimingSummarizer, () {
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test('calculates all fields', () {
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List<int> vsyncTimes = <int>[
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for (int i = 0; i < 100; i += 1) 100 * (i + 1),
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];
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List<int> buildTimes = <int>[
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for (int i = 0; i < 100; i += 1) vsyncTimes[i] + 1000 * (i + 1),
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];
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List<int> rasterTimes = <int>[
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for (int i = 0; i < 100; i += 1) 1000 * (i + 1) + 1000,
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];
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// reversed to make sure sort is working.
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buildTimes = buildTimes.reversed.toList();
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rasterTimes = rasterTimes.reversed.toList();
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vsyncTimes = vsyncTimes.reversed.toList();
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final List<FrameTiming> inputData = <FrameTiming>[
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for (int i = 0; i < 100; i += 1)
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FrameTiming(
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vsyncStart: 0,
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buildStart: vsyncTimes[i],
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buildFinish: buildTimes[i],
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rasterStart: 500,
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rasterFinish: rasterTimes[i],
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// Wall time should not be used in any profiling metrics.
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// It is primarily to correlate with external tools' measurement.
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rasterFinishWallTime: 0,
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),
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];
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final FrameTimingSummarizer summary = FrameTimingSummarizer(inputData);
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expect(summary.averageFrameBuildTime.inMicroseconds, 50500);
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expect(summary.p90FrameBuildTime.inMicroseconds, 90000);
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expect(summary.p99FrameBuildTime.inMicroseconds, 99000);
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expect(summary.worstFrameBuildTime.inMicroseconds, 100000);
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expect(summary.missedFrameBuildBudget, 84);
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expect(summary.averageFrameRasterizerTime.inMicroseconds, 51000);
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expect(summary.p90FrameRasterizerTime.inMicroseconds, 90500);
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expect(summary.p99FrameRasterizerTime.inMicroseconds, 99500);
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expect(summary.worstFrameRasterizerTime.inMicroseconds, 100500);
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expect(summary.missedFrameRasterizerBudget, 85);
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expect(summary.frameBuildTime.length, 100);
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expect(summary.averageVsyncOverhead.inMicroseconds, 5050);
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expect(summary.p90VsyncOverhead.inMicroseconds, 9000);
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expect(summary.p99VsyncOverhead.inMicroseconds, 9900);
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expect(summary.worstVsyncOverhead.inMicroseconds, 10000);
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});
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group('missed budget count', () {
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test('when single element missed budget', () {
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final FrameTimingSummarizer summary = FrameTimingSummarizer(<FrameTiming>[
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FrameTiming(
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buildStart: 0,
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buildFinish: (kBuildBudget + const Duration(microseconds: 1)).inMicroseconds,
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vsyncStart: 0,
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rasterStart: 0,
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rasterFinish: 0,
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rasterFinishWallTime: 0,
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),
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]);
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expect(summary.missedFrameBuildBudget, 1);
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});
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test('when single element within budget', () {
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final FrameTimingSummarizer summary = FrameTimingSummarizer(<FrameTiming>[
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FrameTiming(
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buildStart: 0,
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buildFinish: 0,
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vsyncStart: 0,
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rasterStart: 0,
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rasterFinish: 0,
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rasterFinishWallTime: 0,
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),
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]);
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expect(summary.missedFrameBuildBudget, 0);
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});
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test('when single element exactly within budget', () {
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final FrameTimingSummarizer summary = FrameTimingSummarizer(<FrameTiming>[
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FrameTiming(
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buildStart: 0,
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buildFinish: kBuildBudget.inMicroseconds,
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vsyncStart: 0,
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rasterStart: 0,
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rasterFinish: 0,
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rasterFinishWallTime: 0,
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),
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]);
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expect(summary.missedFrameBuildBudget, 0);
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});
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test('when many missed budget', () {
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final FrameTimingSummarizer summary = FrameTimingSummarizer(<FrameTiming>[
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FrameTiming(
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buildStart: 0,
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buildFinish: 0,
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vsyncStart: 0,
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rasterStart: 0,
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rasterFinish: 0,
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rasterFinishWallTime: 0,
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),
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FrameTiming(
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buildStart: 0,
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buildFinish: kBuildBudget.inMicroseconds,
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vsyncStart: 0,
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rasterStart: 0,
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rasterFinish: 0,
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rasterFinishWallTime: 0,
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),
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FrameTiming(
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buildStart: 0,
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buildFinish: (kBuildBudget + const Duration(microseconds: 1)).inMicroseconds,
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vsyncStart: 0,
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rasterStart: 0,
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rasterFinish: 0,
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rasterFinishWallTime: 0,
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),
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FrameTiming(
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buildStart: 0,
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buildFinish: (kBuildBudget + const Duration(microseconds: 2)).inMicroseconds,
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vsyncStart: 0,
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rasterStart: 0,
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rasterFinish: 0,
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rasterFinishWallTime: 0,
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),
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]);
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expect(summary.missedFrameBuildBudget, 2);
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});
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});
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});
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}
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