STINNER Victor added the comment: For more fun, comparison between Python 2.7 / 3.4 / 3.6 / 3.6 FASTCALL.
----------------------------------+-------------+----------------+----------------+--------------- Tests | py27 | py34 | py36 | fast ----------------------------------+-------------+----------------+----------------+--------------- filter | 165 us (*) | 318 us (+93%) | 237 us (+43%) | 165 us map | 209 us (*) | 258 us (+24%) | 202 us | 171 us (-18%) sorted(list, key=lambda x: x) | 272 us (*) | 348 us (+28%) | 237 us (-13%) | 163 us (-40%) sorted(list) | 33.7 us (*) | 47.8 us (+42%) | 27.3 us (-19%) | 27.7 us (-18%) b=MyBytes(); bytes(b) | 3.31 us (*) | 835 ns (-75%) | 510 ns (-85%) | 561 ns (-83%) namedtuple.attr | 4.63 us (*) | 4.51 us | 1.98 us (-57%) | 1.57 us (-66%) object.__setattr__(obj, "x", 1) | 463 ns (*) | 440 ns | 343 ns (-26%) | 222 ns (-52%) object.__getattribute__(obj, "x") | 323 ns (*) | 396 ns (+23%) | 316 ns | 196 ns (-39%) getattr(1, "real") | 218 ns (*) | 237 ns (+8%) | 264 ns (+21%) | 147 ns (-33%) bounded_pymethod(1, 2) | 213 ns (*) | 244 ns (+14%) | 194 ns (-9%) | 188 ns (-12%) unbound_pymethod(obj, 1, 2) | 345 ns (*) | 247 ns (-29%) | 196 ns (-43%) | 191 ns (-45%) func() | 161 ns (*) | 211 ns (+31%) | 161 ns | 157 ns func(1, 2, 3) | 219 ns (*) | 247 ns (+13%) | 196 ns (-10%) | 190 ns (-13%) ----------------------------------+-------------+----------------+----------------+--------------- Total | 689 us (*) | 980 us (+42%) | 707 us | 531 us (-23%) ----------------------------------+-------------+----------------+----------------+--------------- I didn't know that Python 3.4 was so much slower than Python 2.7 on function calls!? Note: Python 2.7 and Python 3.4 are system binaries (Fedora 22), wheras Python 3.6 and Python 3.6 FASTCALL are compiled manually. Ignore "b=MyBytes(); bytes(b)", this benchmark is written for Python 3. -- details: Common platform: Bits: int=32, long=64, long long=64, size_t=64, void*=64 Platform: Linux-4.4.4-301.fc23.x86_64-x86_64-with-fedora-23-Twenty_Three CPU model: Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz Platform of campaign py27: CFLAGS: -fno-strict-aliasing -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv Python unicode implementation: UCS-4 Timer precision: 954 ns Python version: 2.7.10 (default, Sep 8 2015, 17:20:17) [GCC 5.1.1 20150618 (Red Hat 5.1.1-4)] Timer: time.time Platform of campaign py34: Timer info: namespace(adjustable=False, implementation='clock_gettime(CLOCK_MONOTONIC)', monotonic=True, resolution=1e-09) CFLAGS: -Wno-unused-result -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv Timer precision: 84 ns Python unicode implementation: PEP 393 Python version: 3.4.3 (default, Jun 29 2015, 12:16:01) [GCC 5.1.1 20150618 (Red Hat 5.1.1-4)] Timer: time.perf_counter Platform of campaign py36: Timer info: namespace(adjustable=False, implementation='clock_gettime(CLOCK_MONOTONIC)', monotonic=True, resolution=1e-09) Python version: 3.6.0a0 (default:496e094f4734, Apr 22 2016, 02:18:13) [GCC 5.3.1 20151207 (Red Hat 5.3.1-2)] CFLAGS: -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes Python unicode implementation: PEP 393 Timer: time.perf_counter Platform of campaign fast: Timer info: namespace(adjustable=False, implementation='clock_gettime(CLOCK_MONOTONIC)', monotonic=True, resolution=1e-09) CFLAGS: -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes Python unicode implementation: PEP 393 Python version: 3.6.0a0 (default:ad4a53ed1fbf, Apr 22 2016, 12:42:15) [GCC 5.3.1 20151207 (Red Hat 5.3.1-2)] ---------- Added file: http://bugs.python.org/file42568/bench_fast-2.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26814> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
