diff options
| -rw-r--r-- | Lib/importlib/test/benchmark.py | 61 |
1 files changed, 51 insertions, 10 deletions
diff --git a/Lib/importlib/test/benchmark.py b/Lib/importlib/test/benchmark.py index b5de6c6..a8235cb 100644 --- a/Lib/importlib/test/benchmark.py +++ b/Lib/importlib/test/benchmark.py @@ -9,6 +9,7 @@ from .source import util as source_util import decimal import imp import importlib +import json import os import py_compile import sys @@ -132,18 +133,34 @@ def decimal_using_bytecode(seconds, repeat): yield result -def main(import_): +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,) + 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') + print(header.format(seconds, seconds_plural, repeat, + len(benchmarks) * seconds * repeat)) + new_results = {} for benchmark in benchmarks: print(benchmark.__doc__, "[", end=' ') sys.stdout.flush() @@ -154,19 +171,43 @@ 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) |