json-perf-test.py

import json
import os
import time
import orjson
import ujson

file = 'data.json'
with open(file, 'r') as f:
    file_data = f.read()
data = json.loads(file_data)
count = 50000

# json
start = time.perf_counter()
for i in range(count):
    json.loads(file_data)
end = time.perf_counter()
json_time_decode = end - start

start = time.perf_counter()
for i in range(count):
    json.dumps(data)
end = time.perf_counter()
json_time_encode = end - start

# ujson
start = time.perf_counter()
for i in range(count):
    ujson.loads(file_data)
end = time.perf_counter()
ujson_time_decode = end - start

start = time.perf_counter()
for i in range(count):
    ujson.dumps(data)
end = time.perf_counter()
ujson_time_encode = end - start

# orjson
start = time.perf_counter()
for i in range(count):
    orjson.loads(file_data)
end = time.perf_counter()
orjson_time_decode = end - start

start = time.perf_counter()
for i in range(count):
    orjson.dumps(data)
end = time.perf_counter()
orjson_time_encode = end - start


print(f'Data size: {int(os.path.getsize(file)/1024)}kb')
print(f'Operation: loads() x {count}')
print(f'Json time: {round(json_time_decode, 2)}s/{round(json_time_encode)}s')
print(f'Orjson time: {round(orjson_time_decode, 2)}s [{round(json_time_decode/orjson_time_decode, 2)}x speed] / {round(orjson_time_encode, 2)}s [{round(json_time_encode/orjson_time_encode, 2)}x speed]')
print(f'Ujson time: {round(ujson_time_decode, 2)}s [{round(json_time_decode/ujson_time_decode, 2)}x speed] / {round(ujson_time_encode, 2)}s [{round(json_time_encode/ujson_time_encode, 2)}x speed]')