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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
# SPDX-License-Identifier: Apache-2.0
#
# Copyright (C) 2017, ARM Limited and contributors.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import json
import os
from unittest import TestCase
from trace import Trace
class TestTrace(TestCase):
"""Smoke tests for LISA's Trace class"""
traces_dir = os.path.join(os.path.dirname(__file__), 'traces')
events = [
'sched_switch',
'sched_overutilized',
'cpu_idle',
]
def __init__(self, *args, **kwargs):
super(TestTrace, self).__init__(*args, **kwargs)
self.test_trace = os.path.join(self.traces_dir, 'test_trace.txt')
self.platform = self._get_platform()
self.trace_path = os.path.join(self.traces_dir, 'trace.txt')
self.trace = Trace(self.platform, self.trace_path, self.events)
def make_trace(self, in_data):
with open(self.test_trace, "w") as fout:
fout.write(in_data)
return Trace(self.platform, self.test_trace, self.events,
normalize_time=False)
def _get_platform(self):
with open(os.path.join(self.traces_dir, 'platform.json')) as f:
return json.load(f)
def test_getTaskByName(self):
"""TestTrace: getTaskByName() returns the list of PIDs for all tasks with the specified name"""
for name, pids in [('watchdog/0', [12]),
('sh', [1642, 1702, 1717, 1718]),
('NOT_A_TASK', [])]:
self.assertEqual(self.trace.getTaskByName(name), pids)
def test_getTaskByPid(self):
"""TestTrace: getTaskByPid() returns the name of the task with the specified PID"""
for pid, names in [(15, 'watchdog/1'),
(1639, 'sshd'),
(987654321, None)]:
self.assertEqual(self.trace.getTaskByPid(pid), names)
def test_getTasks(self):
"""TestTrace: getTasks() returns a dictionary mapping PIDs to a single task name"""
tasks_dict = self.trace.getTasks()
for pid, name in [(1, 'init'),
(9, 'rcu_sched'),
(1383, 'jbd2/sda2-8')]:
self.assertEqual(tasks_dict[pid], name)
def test_setTaskName(self):
"""TestTrace: getTaskBy{Pid,Name}() properly track tasks renaming"""
in_data = """
father-1234 [002] 18765.018235: sched_switch: prev_comm=father prev_pid=1234 prev_prio=120 prev_state=0 next_comm=father next_pid=5678 next_prio=120
child-5678 [002] 18766.018236: sched_switch: prev_comm=child prev_pid=5678 prev_prio=120 prev_state=1 next_comm=sh next_pid=3367 next_prio=120
"""
trace = self.make_trace(in_data)
self.assertEqual(trace.getTaskByPid(1234), 'father')
self.assertEqual(trace.getTaskByPid(5678), 'child')
self.assertEqual(trace.getTaskByName('father'), [1234])
os.remove(self.test_trace)
def test_time_range(self):
"""
TestTrace: time_range is the duration of the trace
"""
expected_duration = 6.676497
trace = Trace(self.platform, self.trace_path,
self.events, normalize_time=False
)
self.assertAlmostEqual(trace.time_range, expected_duration, places=6)
def test_time_range_window(self):
"""
TestTrace: time_range is the duration of the trace in the given window
"""
expected_duration = 4.0
trace = Trace(self.platform, self.trace_path,
self.events, normalize_time=False,
window=(76.402065, 80.402065)
)
self.assertAlmostEqual(trace.time_range, expected_duration, places=6)
def test_overutilized_time(self):
"""
TestTrace: overutilized_time is the total time spent while system was overutilized
"""
events = [
76.402065,
80.402065,
82.001337
]
trace_end = self.trace.ftrace.basetime + self.trace.ftrace.get_duration()
# Last event should be extended to the trace's end
expected_time = (events[1] - events[0]) + (trace_end - events[2])
self.assertAlmostEqual(self.trace.overutilized_time, expected_time, places=6)
def test_plotCPUIdleStateResidency(self):
"""
Test that plotCPUIdleStateResidency doesn't crash
"""
in_data = """
foo-1 [000] 0.01: cpu_idle: state=0 cpu_id=0
foo-1 [000] 0.02: cpu_idle: state=-1 cpu_id=0
bar-2 [000] 0.03: cpu_idle: state=0 cpu_id=1
bar-2 [000] 0.04: cpu_idle: state=-1 cpu_id=1
baz-3 [000] 0.05: cpu_idle: state=0 cpu_id=2
baz-3 [000] 0.06: cpu_idle: state=-1 cpu_id=2
bam-4 [000] 0.07: cpu_idle: state=0 cpu_id=3
bam-4 [000] 0.08: cpu_idle: state=-1 cpu_id=3
child-5678 [002] 18765.018235: sched_switch: prev_comm=child prev_pid=5678 prev_prio=120 prev_state=1 next_comm=father next_pid=5678 next_prio=120
"""
trace = self.make_trace(in_data)
trace.analysis.idle.plotCPUIdleStateResidency()
def test_deriving_cpus_count(self):
"""Test that Trace derives cpus_count if it isn't provided"""
if self.platform:
del self.platform['cpus_count']
in_data = """
father-1234 [000] 18765.018235: sched_switch: prev_comm=father prev_pid=1234 prev_prio=120 prev_state=0 next_comm=father next_pid=5678 next_prio=120
child-5678 [002] 18765.018235: sched_switch: prev_comm=child prev_pid=5678 prev_prio=120 prev_state=1 next_comm=father next_pid=5678 next_prio=120
"""
trace = self.make_trace(in_data)
self.assertEqual(trace.platform['cpus_count'], 3)
def test_dfg_cpu_wakeups(self):
"""
Test the cpu_wakeups DataFrame getter
"""
trace = self.make_trace("""
<idle>-0 [004] 519.021928: cpu_idle: state=4294967295 cpu_id=4
<idle>-0 [004] 519.022147: cpu_idle: state=0 cpu_id=4
<idle>-0 [004] 519.022641: cpu_idle: state=4294967295 cpu_id=4
<idle>-0 [001] 519.022642: cpu_idle: state=4294967295 cpu_id=1
<idle>-0 [002] 519.022643: cpu_idle: state=4294967295 cpu_id=2
<idle>-0 [001] 519.022788: cpu_idle: state=0 cpu_id=1
<idle>-0 [002] 519.022831: cpu_idle: state=2 cpu_id=2
<idle>-0 [003] 519.022867: cpu_idle: state=4294967295 cpu_id=3
<idle>-0 [003] 519.023045: cpu_idle: state=2 cpu_id=3
<idle>-0 [004] 519.023080: cpu_idle: state=1 cpu_id=4
""")
df = trace.data_frame.cpu_wakeups()
exp_index=[519.021928, 519.022641, 519.022642, 519.022643, 519.022867]
exp_cpus= [ 4, 4, 1, 2, 3]
self.assertListEqual(df.index.tolist(), exp_index)
self.assertListEqual(df.cpu.tolist(), exp_cpus)
df = trace.data_frame.cpu_wakeups([2])
self.assertListEqual(df.index.tolist(), [519.022643])
self.assertListEqual(df.cpu.tolist(), [2])
class TestTraceNoClusterData(TestTrace):
"""
Test Trace without cluster data
Inherits from TestTrace, so all the tests are run again but with
no cluster info the platform dict.
"""
def _get_platform(self):
platform = super(TestTraceNoClusterData, self)._get_platform()
del platform['clusters']
return platform
class TestTraceNoPlatform(TestTrace):
"""
Test Trace with platform=none
Inherits from TestTrace, so all the tests are run again but with
platform=None
"""
def _get_platform(self):
return None
|
