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
215
216
217
218
|
import sys
import unittest
import asyncio
import contextvars
import functools
import time
import os
import utils
import yappi
async_context_id = contextvars.ContextVar('async_context_id')
async_context_id.set(-1)
def get_async_context_id():
try:
return async_context_id.get()
except LookupError:
return -2
async def run_in_threadpool(copy_contextvars, func, *args, **kwargs):
"""Based on the starlette function of the same name"""
loop = asyncio.get_event_loop()
if copy_contextvars:
# Ensure we run in the same context
child = functools.partial(func, *args, **kwargs)
context = contextvars.copy_context()
func = context.run
args = (child, )
elif kwargs:
func = functools.partial(func, **kwargs)
return await loop.run_in_executor(None, func, *args)
class AsyncUsage(utils.YappiUnitTestCase):
task_count = 5
context_switch_count = 2
duration = 0.2
task_to_profile_name = "task_to_profile"
def test_async_cpu(self):
ttots = self.profile_tasks("cpu")
for ttot in ttots:
# TODO: What is the underlying assumption here by 0.2, I think
# this has implicit trust on machine speed. We need to change this
self.assertLessEqual(ttot, self.duration * 0.2)
# TODO: fix this
@unittest.skipIf(os.name == "nt", "do not run on Windows")
def test_async_wall(self):
ttots = self.profile_tasks("wall")
for ttot in ttots:
self.assertGreaterEqual(ttot, self.duration)
def profile_tasks(self, clock_type):
yappi.set_clock_type(clock_type)
asyncio.run(self.profile_tasks_coroutine())
return self.get_profiling_outputs()
async def profile_tasks_coroutine(self):
yappi.start()
tasks = self.get_tasks()
await asyncio.gather(*tasks)
yappi.stop()
def get_profiling_outputs(self):
fstats = yappi.get_func_stats(
filter={"name": self.task_to_profile_name}
)
#fstats.print_all()
stats = fstats.pop()
#self.assertEqual(
# stats.ncall, self.task_count * self.context_switch_count
#)
averaged_times = [
stats.ttot / self.task_count for _ in range(self.task_count)
]
return averaged_times
def get_tasks(self):
return [
self.task_to_profile(self.duration) for _ in range(self.task_count)
]
@staticmethod
async def task_to_profile(duration: float):
await asyncio.sleep(duration)
class ContextVarsMixin:
task_count: int
duration: float
task_to_profile_name: str
context_switch_count: int
async def profile_tasks_coroutine(self):
yappi.set_tag_callback(get_async_context_id)
await super().profile_tasks_coroutine()
def get_profiling_outputs(self):
ttots = []
for i in range(self.task_count):
fstats = yappi.get_func_stats(
filter={
"tag": i,
"name": self.task_to_profile_name
}
)
stats = fstats.pop()
#self.assertEqual(stats.ncall, self.context_switch_count)
ttots.append(stats.ttot)
return ttots
def get_tasks(self):
async def await_with_context_id(context_id, awaitable):
async_context_id.set(context_id)
return await awaitable
return [
await_with_context_id(i, self.task_to_profile(self.duration))
for i in range(self.task_count)
]
class ThreadTaskMixin:
run_in_threadpool_copy_contextvars = False
task_to_profile_name = "_task_in_thread"
context_switch_count = 1
async def task_to_profile(self, duration: float):
await run_in_threadpool(
self.run_in_threadpool_copy_contextvars, self._task_in_thread,
duration
)
@staticmethod
def _task_in_thread(duration: float):
time.sleep(duration)
class AsyncUsageWithContextvars(ContextVarsMixin, AsyncUsage):
pass
class AsyncUsageThreaded(ThreadTaskMixin, AsyncUsage):
pass
class AsyncUsageThreadedWithContextvars(
ThreadTaskMixin, ContextVarsMixin, AsyncUsage
):
run_in_threadpool_copy_contextvars = True
class AsyncUsageThreadedWithContextvarsSelfContained(utils.YappiUnitTestCase):
task_count = 5
context_switch_count = 1
duration = 0.2
task_to_profile_name = "_task_in_thread"
def test_async_cpu(self):
ttots = self.profile_tasks("cpu")
for ttot in ttots:
self.assertLessEqual(ttot, self.duration * 0.1)
def test_async_wall(self):
ttots = self.profile_tasks("wall")
for ttot in ttots:
self.assertGreaterEqual(ttot, self.duration)
def profile_tasks(self, clock_type):
yappi.set_clock_type(clock_type)
asyncio.run(self.profile_tasks_coroutine())
return self.get_profiling_outputs()
async def profile_tasks_coroutine(self):
yappi.set_tag_callback(get_async_context_id)
yappi.start()
tasks = self.get_tasks()
await asyncio.gather(*tasks)
yappi.stop()
def get_profiling_outputs(self):
ttots = []
for i in range(self.task_count):
fstats = yappi.get_func_stats(
filter={
"tag": i,
"name": self.task_to_profile_name
}
)
stats = fstats.pop()
#self.assertEqual(stats.ncall, self.context_switch_count)
ttots.append(stats.ttot)
return ttots
def get_tasks(self):
async def await_with_context_id(context_id, awaitable):
async_context_id.set(context_id)
return await awaitable
return [
await_with_context_id(i, self.task_to_profile(self.duration))
for i in range(self.task_count)
]
async def task_to_profile(self, duration: float):
await run_in_threadpool(
copy_contextvars=True, func=self._task_in_thread, duration=duration
)
@staticmethod
def _task_in_thread(duration: float):
time.sleep(duration)
|
