forked from gtimelog/gtimelog
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benchmark.py
executable file
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benchmark.py
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#!/usr/bin/python3
from __future__ import print_function
import gc
import os
import sys
import time
from operator import itemgetter
pkgdir = os.path.join(os.path.dirname(__file__), 'src')
sys.path.insert(0, pkgdir)
from gtimelog.settings import Settings
from gtimelog.timelog import parse_datetime, TimeLog
fns = []
def mark(fn):
fns.append(fn)
return fn
def unmark(fn):
return fn
def benchmark(fn, correct_output):
gc.collect()
print("{}:".format(fn.__name__), end="")
m = float("inf")
n = 0
output = fn()
if output != correct_output:
print(" [NB incorrect output]")
else:
print()
t00 = time.time()
while n < 3 or time.time() - t00 < 3:
t0 = time.time()
fn()
t1 = time.time()
d = t1 - t0
m = min(m, d)
print("\r{:.3f}s".format(d), end="")
sys.stdout.flush()
n += 1
if n > 100:
break
tot = time.time() - t00
print("\rmin {:.3f}s avg {:.3f}s (n={})\n".format(m, tot / n, n))
@unmark
def just_read():
filename = Settings().get_timelog_file()
open(filename).readlines()
@unmark
def split():
filename = Settings().get_timelog_file()
for line in open(filename):
if ': ' not in line:
continue
time, entry = line.split(': ', 1)
@unmark
def parse_one():
filename = Settings().get_timelog_file()
for line in open(filename):
if ': ' not in line:
continue
time, entry = line.split(': ', 1)
try:
time = parse_datetime(time)
except ValueError:
continue
@unmark
def parse_two(): # slower than parse_one
filename = Settings().get_timelog_file()
for line in open(filename):
try:
time, entry = line.split(': ', 1)
time = parse_datetime(time)
except ValueError:
continue
@unmark
def parse_three(): # fastest
filename = Settings().get_timelog_file()
for line in open(filename):
time, sep, entry = line.partition(': ')
if not sep:
continue
try:
time = parse_datetime(time)
except ValueError:
continue
@unmark
def parse_and_strip():
filename = Settings().get_timelog_file()
for line in open(filename):
time, sep, entry = line.partition(': ')
if not sep:
continue
try:
time = parse_datetime(time)
except ValueError:
continue
entry = entry.strip()
@unmark
def parse_and_collect():
items = []
filename = Settings().get_timelog_file()
for line in open(filename):
time, sep, entry = line.partition(': ')
if not sep:
continue
try:
time = parse_datetime(time)
except ValueError:
continue
entry = entry.strip()
items.append((time, entry))
return items
@unmark
def parse_and_sort_incorrectly():
items = []
filename = Settings().get_timelog_file()
for line in open(filename):
time, sep, entry = line.partition(': ')
if not sep:
continue
try:
time = parse_datetime(time)
except ValueError:
continue
entry = entry.strip()
items.append((time, entry))
items.sort() # XXX: can reorder lines
return items
@mark
def parse_and_sort():
items = []
filename = Settings().get_timelog_file()
for line in open(filename):
time, sep, entry = line.partition(': ')
if not sep:
continue
try:
time = parse_datetime(time)
except ValueError:
continue
entry = entry.strip()
items.append((time, entry))
items.sort(key=itemgetter(0))
return items
@mark
def parse_and_sort_unicode():
items = []
filename = Settings().get_timelog_file()
for line in open(filename, 'rb').read().decode('UTF-8').splitlines():
time, sep, entry = line.partition(': ')
if not sep:
continue
try:
time = parse_datetime(time)
except ValueError:
continue
entry = entry.strip()
items.append((time, entry))
items.sort(key=itemgetter(0))
return items
@unmark
def parse_and_sort_unicode_piecemeal():
items = []
filename = Settings().get_timelog_file()
for line in open(filename, 'rb'):
time, sep, entry = line.partition(b': ')
if not sep:
continue
try:
time = parse_datetime(time.decode('ASCII'))
except (ValueError, UnicodeError):
continue
entry = entry.strip().decode('UTF-8')
items.append((time, entry))
items.sort(key=itemgetter(0))
return items
@mark
def full():
return TimeLog(Settings().get_timelog_file(), Settings().virtual_midnight).items
def main():
correct = full()
for fn in fns:
benchmark(fn, correct)
if __name__ == '__main__':
main()