Wolfgang Maier added the comment:
sure, I just happened to have the profiling available since I used it to
optimize things. Here's similar microbenchmarks using perf:
STRINGS
=======
$ python -m perf timeit -s "from fractions import Fraction"
"Fraction('1.23456e-7')"
.....................
Median +- std dev: 17.0 us +- 0.3 us
$ python -m perf timeit -s "from frc import Fraction" "Fraction('1.23456e-7')"
.....................
Median +- std dev: 8.95 us +- 0.16 us
$ python -m perf timeit -s "from fractions import Fraction"
"Fraction('234/567')"
.....................
Median +- std dev: 12.6 us +- 0.1 us
$ python -m perf timeit -s "from frc import Fraction" "Fraction('234/567')"
.....................
Median +- std dev: 5.45 us +- 0.16 us
$ python -m perf timeit -s "from fractions import Fraction" "Fraction('123456')"
.....................
Median +- std dev: 12.4 us +- 0.6 us
$ python -m perf timeit -s "from frc import Fraction" "Fraction('123456')"
.....................
Median +- std dev: 5.77 us +- 0.12 us
$ python -m perf timeit -s "from fractions import Fraction; f=Fraction(3/4)"
"Fraction(f)"
.....................
Median +- std dev: 4.36 us +- 0.06 us
$ python -m perf timeit -s "from frc import Fraction; f=Fraction(3/4)"
"Fraction(f)"
.....................
Median +- std dev: 4.59 us +- 0.07 us
$ python -m perf timeit -s "from fractions import Fraction" -s "class
myInt(int): pass" -s "i=myInt(123456)" "Fraction(i)"
.....................
Median +- std dev: 4.04 us +- 0.07 us
$ python -m perf timeit -s "from frc import Fraction" -s "class myInt(int):
pass" -s "i=myInt(123456)" "Fraction(i)"
.....................
Median +- std dev: 4.27 us +- 0.06 us
FLOATS
======
$ python -m perf timeit -s "from fractions import Fraction"
"Fraction(1.23456e-7)"
.....................
Median +- std dev: 6.30 us +- 0.28 us
$ python -m perf timeit -s "from frc import Fraction" "Fraction(1.23456e-7)"
.....................
Median +- std dev: 8.64 us +- 0.13 us
$ python -m perf timeit -s "from fractions import Fraction"
"Fraction.from_float(1.23456e-7)"
.....................
Median +- std dev: 8.68 us +- 0.14 us
$ python -m perf timeit -s "from frc import Fraction"
"Fraction.from_float(1.23456e-7)"
.....................
Median +- std dev: 3.37 us +- 0.17 us
DECIMALS (using C implementation this time)
===========================================
$ python -m perf timeit -s "from fractions import Fraction; from decimal import
Decimal; d=Decimal('123456')" "Fraction(d)".....................
Median +- std dev: 6.95 us +- 0.21 us
$ python -m perf timeit -s "from frc import Fraction; from decimal import
Decimal; d=Decimal('123456')" "Fraction(d)"
.....................
Median +- std dev: 8.43 us +- 0.17 us
$ python -m perf timeit -s "from fractions import Fraction; from decimal import
Decimal; d=Decimal('123456')" "Fraction.from_decimal(d)"
.....................
Median +- std dev: 11.6 us +- 0.2 us
$ python -m perf timeit -s "from frc import Fraction; from decimal import
Decimal; d=Decimal('123456')" "Fraction.from_decimal(d)"
.....................
Median +- std dev: 4.14 us +- 0.28 us
----------
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue28716>
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