diff options
Diffstat (limited to 'Lib/importlib/test/benchmark.py')
| -rw-r--r-- | Lib/importlib/test/benchmark.py | 159 |
1 files changed, 114 insertions, 45 deletions
diff --git a/Lib/importlib/test/benchmark.py b/Lib/importlib/test/benchmark.py index b5de6c6..ed88f04 100644 --- a/Lib/importlib/test/benchmark.py +++ b/Lib/importlib/test/benchmark.py @@ -9,9 +9,11 @@ from .source import util as source_util import decimal import imp import importlib +import json import os import py_compile import sys +import tabnanny import timeit @@ -59,7 +61,7 @@ def builtin_mod(seconds, repeat): def source_wo_bytecode(seconds, repeat): - """Source w/o bytecode: simple""" + """Source w/o bytecode: small""" sys.dont_write_bytecode = True try: name = '__importlib_test_benchmark__' @@ -73,23 +75,30 @@ def source_wo_bytecode(seconds, repeat): sys.dont_write_bytecode = False -def decimal_wo_bytecode(seconds, repeat): - """Source w/o bytecode: decimal""" - name = 'decimal' - decimal_bytecode = imp.cache_from_source(decimal.__file__) - if os.path.exists(decimal_bytecode): - os.unlink(decimal_bytecode) - sys.dont_write_bytecode = True - try: - for result in bench(name, lambda: sys.modules.pop(name), repeat=repeat, - seconds=seconds): - yield result - finally: - sys.dont_write_bytecode = False +def _wo_bytecode(module): + name = module.__name__ + def benchmark_wo_bytecode(seconds, repeat): + """Source w/o bytecode: {}""" + bytecode_path = imp.cache_from_source(module.__file__) + if os.path.exists(bytecode_path): + os.unlink(bytecode_path) + sys.dont_write_bytecode = True + try: + for result in bench(name, lambda: sys.modules.pop(name), + repeat=repeat, seconds=seconds): + yield result + finally: + sys.dont_write_bytecode = False + + benchmark_wo_bytecode.__doc__ = benchmark_wo_bytecode.__doc__.format(name) + return benchmark_wo_bytecode + +tabnanny_wo_bytecode = _wo_bytecode(tabnanny) +decimal_wo_bytecode = _wo_bytecode(decimal) def source_writing_bytecode(seconds, repeat): - """Source writing bytecode: simple""" + """Source writing bytecode: small""" assert not sys.dont_write_bytecode name = '__importlib_test_benchmark__' with source_util.create_modules(name) as mapping: @@ -101,19 +110,27 @@ def source_writing_bytecode(seconds, repeat): yield result -def decimal_writing_bytecode(seconds, repeat): - """Source writing bytecode: decimal""" - assert not sys.dont_write_bytecode - name = 'decimal' - def cleanup(): - sys.modules.pop(name) - os.unlink(imp.cache_from_source(decimal.__file__)) - for result in bench(name, cleanup, repeat=repeat, seconds=seconds): - yield result +def _writing_bytecode(module): + name = module.__name__ + def writing_bytecode_benchmark(seconds, repeat): + """Source writing bytecode: {}""" + assert not sys.dont_write_bytecode + def cleanup(): + sys.modules.pop(name) + os.unlink(imp.cache_from_source(module.__file__)) + for result in bench(name, cleanup, repeat=repeat, seconds=seconds): + yield result + + writing_bytecode_benchmark.__doc__ = ( + writing_bytecode_benchmark.__doc__.format(name)) + return writing_bytecode_benchmark + +tabnanny_writing_bytecode = _writing_bytecode(tabnanny) +decimal_writing_bytecode = _writing_bytecode(decimal) def source_using_bytecode(seconds, repeat): - """Bytecode w/ source: simple""" + """Source w/ bytecode: small""" name = '__importlib_test_benchmark__' with source_util.create_modules(name) as mapping: py_compile.compile(mapping[name]) @@ -123,27 +140,55 @@ def source_using_bytecode(seconds, repeat): yield result -def decimal_using_bytecode(seconds, repeat): - """Bytecode w/ source: decimal""" - name = 'decimal' - py_compile.compile(decimal.__file__) - for result in bench(name, lambda: sys.modules.pop(name), repeat=repeat, - seconds=seconds): - yield result +def _using_bytecode(module): + name = module.__name__ + def using_bytecode_benchmark(seconds, repeat): + """Source w/ bytecode: {}""" + py_compile.compile(module.__file__) + for result in bench(name, lambda: sys.modules.pop(name), repeat=repeat, + seconds=seconds): + yield result + using_bytecode_benchmark.__doc__ = ( + using_bytecode_benchmark.__doc__.format(name)) + return using_bytecode_benchmark -def main(import_): +tabnanny_using_bytecode = _using_bytecode(tabnanny) +decimal_using_bytecode = _using_bytecode(decimal) + + +def main(import_, filename=None, benchmark=None): + if filename and os.path.exists(filename): + with open(filename, 'r') as file: + prev_results = json.load(file) + else: + prev_results = {} __builtins__.__import__ = import_ benchmarks = (from_cache, builtin_mod, - source_using_bytecode, source_wo_bytecode, source_writing_bytecode, - decimal_using_bytecode, decimal_writing_bytecode, - decimal_wo_bytecode,) + source_wo_bytecode, source_using_bytecode, + tabnanny_writing_bytecode, + tabnanny_wo_bytecode, tabnanny_using_bytecode, + decimal_writing_bytecode, + decimal_wo_bytecode, decimal_using_bytecode, + ) + if benchmark: + for b in benchmarks: + if b.__doc__ == benchmark: + benchmarks = [b] + break + else: + print('Unknown benchmark: {!r}'.format(benchmark, file=sys.stderr)) + sys.exit(1) seconds = 1 seconds_plural = 's' if seconds > 1 else '' repeat = 3 - header = "Measuring imports/second over {} second{}, best out of {}\n" - print(header.format(seconds, seconds_plural, repeat)) + header = ('Measuring imports/second over {} second{}, best out of {}\n' + 'Entire benchmark run should take about {} seconds\n' + 'Using {!r} as __import__\n') + print(header.format(seconds, seconds_plural, repeat, + len(benchmarks) * seconds * repeat, __import__)) + new_results = {} for benchmark in benchmarks: print(benchmark.__doc__, "[", end=' ') sys.stdout.flush() @@ -154,19 +199,43 @@ def main(import_): sys.stdout.flush() assert not sys.dont_write_bytecode print("]", "best is", format(max(results), ',d')) + new_results[benchmark.__doc__] = results + prev_results[import_.__module__] = new_results + if 'importlib._bootstrap' in prev_results and 'builtins' in prev_results: + print('\n\nComparing importlib vs. __import__\n') + importlib_results = prev_results['importlib._bootstrap'] + builtins_results = prev_results['builtins'] + for benchmark in benchmarks: + benchmark_name = benchmark.__doc__ + importlib_result = max(importlib_results[benchmark_name]) + builtins_result = max(builtins_results[benchmark_name]) + result = '{:,d} vs. {:,d} ({:%})'.format(importlib_result, + builtins_result, + importlib_result/builtins_result) + print(benchmark_name, ':', result) + if filename: + with open(filename, 'w') as file: + json.dump(prev_results, file, indent=2) if __name__ == '__main__': - import optparse + import argparse - parser = optparse.OptionParser() - parser.add_option('-b', '--builtin', dest='builtin', action='store_true', + parser = argparse.ArgumentParser() + parser.add_argument('-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: {}".format(args)) + parser.add_argument('-f', '--file', dest='filename', default=None, + help='file to read/write results from/to' + '(incompatible w/ --benchmark)') + parser.add_argument('--benchmark', dest='benchmark', + help='specific benchmark to run ' + '(incompatible w/ --file)') + options = parser.parse_args() + if options.filename and options.benchmark: + print('Cannot specify a benchmark *and* read/write results') + sys.exit(1) import_ = __import__ if not options.builtin: import_ = importlib.__import__ - main(import_) + main(import_, options.filename, options.benchmark) |