mirror of
https://github.com/python/cpython.git
synced 2025-11-04 07:31:38 +00:00
83 lines
2.5 KiB
Python
83 lines
2.5 KiB
Python
|
from . import util
|
||
|
|
from .source import util as source_util
|
||
|
|
import gc
|
||
|
|
import decimal
|
||
|
|
import imp
|
||
|
|
import importlib
|
||
|
|
import sys
|
||
|
|
import timeit
|
||
|
|
|
||
|
|
|
||
|
|
def bench_cache(import_, repeat, number):
|
||
|
|
"""Measure the time it takes to pull from sys.modules."""
|
||
|
|
name = '<benchmark import>'
|
||
|
|
with util.uncache(name):
|
||
|
|
module = imp.new_module(name)
|
||
|
|
sys.modules[name] = module
|
||
|
|
runs = []
|
||
|
|
for x in range(repeat):
|
||
|
|
start_time = timeit.default_timer()
|
||
|
|
for y in range(number):
|
||
|
|
import_(name)
|
||
|
|
end_time = timeit.default_timer()
|
||
|
|
runs.append(end_time - start_time)
|
||
|
|
return min(runs)
|
||
|
|
|
||
|
|
|
||
|
|
def bench_importing_source(import_, repeat, number, loc=100000):
|
||
|
|
"""Measure importing source from disk.
|
||
|
|
|
||
|
|
For worst-case scenario, the line endings are \\r\\n and thus require
|
||
|
|
universal newline translation.
|
||
|
|
|
||
|
|
"""
|
||
|
|
name = '__benchmark'
|
||
|
|
with source_util.create_modules(name) as mapping:
|
||
|
|
with open(mapping[name], 'w') as file:
|
||
|
|
for x in range(loc):
|
||
|
|
file.write("{0}\r\n".format(x))
|
||
|
|
with util.import_state(path=[mapping['.root']]):
|
||
|
|
runs = []
|
||
|
|
for x in range(repeat):
|
||
|
|
start_time = timeit.default_timer()
|
||
|
|
for y in range(number):
|
||
|
|
try:
|
||
|
|
import_(name)
|
||
|
|
finally:
|
||
|
|
del sys.modules[name]
|
||
|
|
end_time = timeit.default_timer()
|
||
|
|
runs.append(end_time - start_time)
|
||
|
|
return min(runs)
|
||
|
|
|
||
|
|
|
||
|
|
def main(import_):
|
||
|
|
args = [('sys.modules', bench_cache, 5, 500000),
|
||
|
|
('source', bench_importing_source, 5, 10000)]
|
||
|
|
test_msg = "{test}, {number} times (best of {repeat}):"
|
||
|
|
result_msg = "{result:.2f} secs"
|
||
|
|
gc.disable()
|
||
|
|
try:
|
||
|
|
for name, meth, repeat, number in args:
|
||
|
|
result = meth(import_, repeat, number)
|
||
|
|
print(test_msg.format(test=name, repeat=repeat,
|
||
|
|
number=number).ljust(40),
|
||
|
|
result_msg.format(result=result).rjust(10))
|
||
|
|
finally:
|
||
|
|
gc.enable()
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
import optparse
|
||
|
|
|
||
|
|
parser = optparse.OptionParser()
|
||
|
|
parser.add_option('-b', '--builtin', dest='builtin', action='store_true',
|
||
|
|
default=False, help="use the built-in __import__")
|
||
|
|
options, args = parser.parse_args()
|
||
|
|
if args:
|
||
|
|
raise RuntimeError("unrecognized args: {0}".format(args))
|
||
|
|
import_ = __import__
|
||
|
|
if not options.builtin:
|
||
|
|
import_ = importlib.__import__
|
||
|
|
|
||
|
|
main(import_)
|