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
|
"""
A script used in test_complex_case.py
python ~/code/line_profiler/tests/complex_example.py
LINE_PROFILE=1 python ~/code/line_profiler/tests/complex_example.py
python -m kernprof -v ~/code/line_profiler/tests/complex_example.py
python -m kernprof -lv ~/code/line_profiler/tests/complex_example.py
cd ~/code/line_profiler/tests/
# Run the code by itself without any profiling
PROFILE_TYPE=none python complex_example.py
# NOTE: this fails because we are not running with kernprof
PROFILE_TYPE=implicit python complex_example.py
# Kernprof with the implicit profile decorator
# NOTE: multiprocessing breaks this invocation, so set process size to zero
PROFILE_TYPE=implicit python -m kernprof -b complex_example.py --process_size=0
python -m pstats ./complex_example.py.prof
# Explicit decorator with line kernprof
# NOTE: again, multiprocessing breaks when using kernprof
PROFILE_TYPE=explicit python -m kernprof -l complex_example.py --process_size=0
python -m line_profiler complex_example.py.lprof
# Explicit decorator with cProfile kernprof
# NOTE: again, multiprocessing breaks when using kernprof (does this happen in older verions?)
PROFILE_TYPE=explicit python -m kernprof -b complex_example.py --process_size=0
python -m pstats ./complex_example.py.prof
# Explicit decorator with environment enabling
PROFILE_TYPE=explicit LINE_PROFILE=1 python complex_example.py
# Explicit decorator without enabling it
PROFILE_TYPE=explicit LINE_PROFILE=0 python complex_example.py
# Use a custom defined line profiler object
PROFILE_TYPE=custom python complex_example.py
"""
import os
# The test will define how we expect the profile decorator to exist
PROFILE_TYPE = os.environ.get('PROFILE_TYPE', '')
if PROFILE_TYPE == 'implicit':
# Do nothing, assume kernprof will inject profile in for us
...
elif PROFILE_TYPE == 'none':
# Define a no-op profiler
def profile(func):
return func
elif PROFILE_TYPE == 'explicit':
# Use the explicit profile decorator
import line_profiler
profile = line_profiler.profile
elif PROFILE_TYPE == 'custom':
# Create a custom profile decorator
import line_profiler
import atexit
profile = line_profiler.LineProfiler()
@atexit.register
def _show_profile_on_end():
...
profile.print_stats(summarize=1, sort=1, stripzeros=1, rich=1)
else:
raise KeyError('')
@profile
def fib(n):
a, b = 0, 1
while a < n:
a, b = b, a + b
@profile
def fib_only_called_by_thread(n):
a, b = 0, 1
while a < n:
a, b = b, a + b
@profile
def fib_only_called_by_process(n):
a, b = 0, 1
while a < n:
a, b = b, a + b
@profile
def main():
"""
Run a lot of different Fibonacci jobs
"""
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--serial_size', type=int, default=10)
parser.add_argument('--thread_size', type=int, default=10)
parser.add_argument('--process_size', type=int, default=10)
args = parser.parse_args()
for i in range(args.serial_size):
fib(i)
funcy_fib(
i)
fib(i)
from concurrent.futures import ThreadPoolExecutor
executor = ThreadPoolExecutor(max_workers=4)
with executor:
jobs = []
for i in range(args.thread_size):
job = executor.submit(fib, i)
jobs.append(job)
job = executor.submit(funcy_fib, i)
jobs.append(job)
job = executor.submit(fib_only_called_by_thread, i)
jobs.append(job)
for job in jobs:
job.result()
from concurrent.futures import ProcessPoolExecutor
executor = ProcessPoolExecutor(max_workers=4)
with executor:
jobs = []
for i in range(args.process_size):
job = executor.submit(fib, i)
jobs.append(job)
job = executor.submit(funcy_fib, i)
jobs.append(job)
job = executor.submit(fib_only_called_by_process, i)
jobs.append(job)
for job in jobs:
job.result()
@profile
def funcy_fib(n):
"""
Alternative fib function where code splits out over multiple lines
"""
a, b = (
0, 1
)
while a < n:
# print(
# a, end=' ')
a, b = b, \
a + b
# print(
# )
if __name__ == '__main__':
"""
CommandLine:
cd ~/code/line_profiler/tests/
python complex_example.py --size 10
python complex_example.py --serial_size 100000 --thread_size 0 --process_size 0
"""
main()
|
