gistfile1.txt

Micro-benchmark results for PEP 580.
See https://github.com/jdemeyer/callbench for benchmarking code

CPython was configured with --enable-optimizations and compiled with GCC 6.4.0.

                                         CPython 1fc5bf2ff    PEP 580 1fc5bf2ff    PEP 590 2f54908af

VARARGS function():                      24.5 ns +- 0.1 ns    24.7 ns +- 0.2 ns    25.9 ns +- 0.4 ns
FASTCALL function():                     19.3 ns +- 0.9 ns    17.3 ns +- 0.2 ns    19.4 ns +- 0.4 ns
VARARGS obj.method():                    41.9 ns +- 0.2 ns    41.3 ns +- 0.8 ns    42.1 ns +- 0.8 ns
FASTCALL obj.method():                   34.9 ns +- 0.7 ns    33.8 ns +- 0.6 ns    35.6 ns +- 0.5 ns
VARARGS bound method():                  24.4 ns +- 0.1 ns    24.7 ns +- 0.1 ns    25.8 ns +- 0.4 ns
FASTCALL bound method():                 19.5 ns +- 0.8 ns    17.6 ns +- 0.3 ns    19.1 ns +- 0.4 ns
VARARGS cls.method(obj, ):               52.0 ns +- 0.7 ns    49.3 ns +- 0.6 ns    52.8 ns +- 0.7 ns
FASTCALL cls.method(obj, ):              44.0 ns +- 0.6 ns    42.7 ns +- 1.1 ns    43.8 ns +- 1.0 ns
VARARGS unbound method(obj, ):           30.6 ns +- 0.3 ns    30.6 ns +- 0.5 ns    31.9 ns +- 0.7 ns
FASTCALL unbound method(obj, ):          24.2 ns +- 0.2 ns    23.1 ns +- 0.2 ns    25.2 ns +- 0.3 ns
tp_call():                               21.2 ns +- 0.6 ns    21.7 ns +- 0.4 ns    21.1 ns +- 0.3 ns

VARARGS function(1, 2, 3):               46.1 ns +- 0.3 ns    46.8 ns +- 1.0 ns    47.4 ns +- 1.2 ns
FASTCALL function(1, 2, 3):              26.8 ns +- 0.4 ns    25.5 ns +- 0.1 ns    27.8 ns +- 0.2 ns
VARARGS obj.method(1, 2, 3):             66.2 ns +- 1.0 ns    65.1 ns +- 0.5 ns    65.5 ns +- 0.7 ns
FASTCALL obj.method(1, 2, 3):            43.6 ns +- 0.5 ns    42.8 ns +- 1.0 ns    43.7 ns +- 1.1 ns
VARARGS bound method(1, 2, 3):           46.1 ns +- 0.4 ns    46.5 ns +- 1.0 ns    47.4 ns +- 0.8 ns
FASTCALL bound method(1, 2, 3):          26.6 ns +- 0.2 ns    25.5 ns +- 0.4 ns    27.9 ns +- 0.3 ns
VARARGS cls.method(obj, 1, 2, 3):        76.5 ns +- 0.4 ns    73.6 ns +- 0.9 ns    79.7 ns +- 1.9 ns
FASTCALL cls.method(obj, 1, 2, 3):       52.6 ns +- 0.7 ns    51.4 ns +- 0.9 ns    54.5 ns +- 1.5 ns
VARARGS unbound method(obj, 1, 2, 3):    54.9 ns +- 1.0 ns    52.2 ns +- 0.7 ns    55.3 ns +- 0.7 ns
FASTCALL unbound method(obj, 1, 2, 3):   33.5 ns +- 0.3 ns    31.0 ns +- 0.3 ns    34.0 ns +- 0.9 ns
tp_call(1, 2, 3):                        43.7 ns +- 0.5 ns    42.5 ns +- 3.2 ns    43.8 ns +- 1.3 ns

VARARGS function(1, two=2):              90.9 ns +- 1.2 ns    87.0 ns +- 1.0 ns    89.6 ns +- 0.8 ns
FASTCALL function(1, two=2):             29.1 ns +- 0.2 ns    28.4 ns +- 0.4 ns    29.6 ns +- 0.2 ns
VARARGS obj.method(1, two=2):           120   ns +- 1   ns   120   ns +- 1 ns     123   ns +- 1   ns
FASTCALL obj.method(1, two=2):           55.4 ns +- 1.2 ns    57.2 ns +- 1.4 ns    55.7 ns +- 0.6 ns
VARARGS bound method(1, two=2):          90.6 ns +- 0.5 ns    86.7 ns +- 0.4 ns    89.6 ns +- 0.8 ns
FASTCALL bound method(1, two=2):         29.1 ns +- 0.1 ns    28.6 ns +- 0.5 ns    29.6 ns +- 0.1 ns
VARARGS cls.method(obj, 1, two=2):      115   ns +- 1   ns   114   ns +- 1 ns     114   ns +- 1   ns
FASTCALL cls.method(obj, 1, two=2):      50.5 ns +- 0.4 ns    50.7 ns +- 0.8 ns    52.2 ns +- 2.4 ns
VARARGS unbound method(obj, 1, two=2):   96.2 ns +- 0.7 ns    96.2 ns +- 0.5 ns    99.7 ns +- 0.6 ns
FASTCALL unbound method(obj, 1, two=2):  35.2 ns +- 0.2 ns    34.6 ns +- 1.2 ns    36.4 ns +- 0.2 ns
tp_call(1, two=2):                       83.2 ns +- 1.0 ns    85.3 ns +- 3.7 ns    84.1 ns +- 0.5 ns