1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/memory_pressure/memory_pressure_level_reporter.h"
#include <memory>
#include "base/test/metrics/histogram_tester.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace memory_pressure {
TEST(MemoryPressureLevelReporterTest, PressureWindowDuration) {
base::test::SingleThreadTaskEnvironment task_environment(
base::test::TaskEnvironment::MainThreadType::IO,
base::test::TaskEnvironment::TimeSource::MOCK_TIME);
MemoryPressureLevelReporter reporter(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
base::HistogramTester histogram_tester;
// Moderate -> None.
task_environment.AdvanceClock(base::Seconds(12));
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
histogram_tester.ExpectTimeBucketCount(
"Memory.PressureWindowDuration.ModerateToNone", base::Seconds(12), 1);
// Moderate -> Critical.
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
task_environment.AdvanceClock(base::Seconds(20));
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
histogram_tester.ExpectTimeBucketCount(
"Memory.PressureWindowDuration.ModerateToCritical", base::Seconds(20), 1);
// Critical -> None
task_environment.AdvanceClock(base::Seconds(25));
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
histogram_tester.ExpectTimeBucketCount(
"Memory.PressureWindowDuration.CriticalToNone", base::Seconds(25), 1);
// Critical -> Moderate
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
task_environment.AdvanceClock(base::Seconds(27));
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
histogram_tester.ExpectTimeBucketCount(
"Memory.PressureWindowDuration.CriticalToModerate", base::Seconds(27), 1);
}
TEST(MemoryPressureLevelReporterTest, MemoryPressureHistogram) {
base::test::SingleThreadTaskEnvironment task_environment(
base::test::TaskEnvironment::MainThreadType::IO,
base::test::TaskEnvironment::TimeSource::MOCK_TIME);
std::unique_ptr<MemoryPressureLevelReporter> reporter =
std::make_unique<MemoryPressureLevelReporter>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
base::HistogramTester histogram_tester;
constexpr base::TimeDelta kDelay = base::Seconds(12);
const char* kHistogram = "Memory.PressureLevel2";
// None -> Moderate.
task_environment.AdvanceClock(kDelay);
reporter->OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
// There one report for a |kdelay| MEMORY_PRESSURE_LEVEL_NONE session.
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
kDelay.InSeconds());
task_environment.AdvanceClock(kDelay);
reporter->OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
// There one report for a |kdelay| MEMORY_PRESSURE_LEVEL_MODERATE session.
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE),
kDelay.InSeconds());
task_environment.AdvanceClock(kDelay);
reporter->OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL);
// There's now two reports for a |kdelay| MEMORY_PRESSURE_LEVEL_NONE session,
// for a total of |2*kdelay|.
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
(2 * kDelay).InSeconds());
task_environment.AdvanceClock(kDelay);
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL),
0);
reporter.reset();
// Releasing the reporter should report the data from the current pressure
// session.
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_CRITICAL),
kDelay.InSeconds());
}
TEST(MemoryPressureLevelReporterTest, MemoryPressureHistogramAccumulatedTime) {
base::test::SingleThreadTaskEnvironment task_environment(
base::test::TaskEnvironment::MainThreadType::IO,
base::test::TaskEnvironment::TimeSource::MOCK_TIME);
MemoryPressureLevelReporter reporter(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
base::HistogramTester histogram_tester;
const char* kHistogram = "Memory.PressureLevel2";
constexpr base::TimeDelta kHalfASecond = base::Milliseconds(500);
task_environment.AdvanceClock(kHalfASecond);
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
// The delay is inferior to one second, there should be no data reported.
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
0);
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
task_environment.AdvanceClock(kHalfASecond);
reporter.OnMemoryPressureLevelChanged(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_MODERATE);
// The delay is inferior to one second, there should be no data reported.
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
1);
}
TEST(MemoryPressureLevelReporterTest,
MemoryPressureHistogramPeriodicReporting) {
base::test::SingleThreadTaskEnvironment task_environment(
base::test::TaskEnvironment::MainThreadType::IO,
base::test::TaskEnvironment::TimeSource::MOCK_TIME);
MemoryPressureLevelReporter reporter(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE);
base::HistogramTester histogram_tester;
const char* kHistogram = "Memory.PressureLevel2";
// Advancing the clock by a few seconds shouldn't cause any periodic
// reporting.
task_environment.FastForwardBy(base::Seconds(10));
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
0);
// Advancing the clock by a few minutes should cause periodic reporting.
task_environment.FastForwardBy(base::Minutes(5));
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
5 * 60 /* 5 minutes */);
task_environment.FastForwardBy(base::Minutes(5));
histogram_tester.ExpectBucketCount(
kHistogram,
static_cast<int>(
base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
2 * 5 * 60 /* 2 x 5 minutes */);
}
} // namespace memory_pressure
|
