1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
#!/usr/bin/env python3
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import datetime
import io
import json
import os
import random
from time import mktime
from timeit import timeit
from tabulate import tabulate
import orjson
os.sched_setaffinity(os.getpid(), {0, 1})
data_as_obj = []
for year in range(1920, 2020):
start = datetime.date(year, 1, 1)
array = [
(int(mktime((start + datetime.timedelta(days=i)).timetuple())), i + 1)
for i in range(365)
]
array.append(("other", 0))
random.shuffle(array)
data_as_obj.append(dict(array))
data_as_str = orjson.loads(orjson.dumps(data_as_obj, option=orjson.OPT_NON_STR_KEYS))
headers = ("Library", "str keys (ms)", "int keys (ms)", "int keys sorted (ms)")
LIBRARIES = ("orjson", "json")
ITERATIONS = 500
output_in_kib = len(orjson.dumps(data_as_str)) / 1024
print(f"{output_in_kib:,.0f}KiB output (orjson)")
def per_iter_latency(val):
if val is None:
return None
return (val * 1000) / ITERATIONS
def test_correctness(serialized):
return orjson.loads(serialized) == data_as_str
table = []
for lib_name in LIBRARIES:
print(f"{lib_name}...")
if lib_name == "json":
time_as_str = timeit(
lambda: json.dumps(data_as_str).encode("utf-8"),
number=ITERATIONS,
)
time_as_obj = timeit(
lambda: json.dumps(data_as_obj).encode("utf-8"),
number=ITERATIONS,
)
time_as_obj_sorted = (
None # TypeError: '<' not supported between instances of 'str' and 'int'
)
correct = False
elif lib_name == "orjson":
time_as_str = timeit(
lambda: orjson.dumps(data_as_str, None, orjson.OPT_NON_STR_KEYS),
number=ITERATIONS,
)
time_as_obj = timeit(
lambda: orjson.dumps(data_as_obj, None, orjson.OPT_NON_STR_KEYS),
number=ITERATIONS,
)
time_as_obj_sorted = timeit(
lambda: orjson.dumps(
data_as_obj,
None,
orjson.OPT_NON_STR_KEYS | orjson.OPT_SORT_KEYS,
),
number=ITERATIONS,
)
correct = test_correctness(
orjson.dumps(
data_as_obj,
None,
orjson.OPT_NON_STR_KEYS | orjson.OPT_SORT_KEYS,
),
)
else:
raise NotImplementedError
time_as_str = per_iter_latency(time_as_str)
time_as_obj = per_iter_latency(time_as_obj)
if not correct:
time_as_obj_sorted = None
else:
time_as_obj_sorted = per_iter_latency(time_as_obj_sorted)
table.append(
(
lib_name,
f"{time_as_str:,.2f}" if time_as_str else "",
f"{time_as_obj:,.2f}" if time_as_obj else "",
f"{time_as_obj_sorted:,.2f}" if time_as_obj_sorted else "",
),
)
buf = io.StringIO()
buf.write(tabulate(table, headers, tablefmt="github"))
buf.write("\n")
print(buf.getvalue())
|
