speed_test.py

#!/usr/bin/env python -u

# python 3.2
# Starting json...  done: 17.7406787872
# Starting simplejson...  done: 6.82341694832
# Starting cjson...  done: 2.29899692535
# Starting ujson...  done: 0.729449987411
# Starting pickle...  done: 45.2784938812
# Starting cPickle...  done: 6.48070406914

import time
import simplejson
import json
import cjson
import ujson
import pickle
import cPickle

cjson.dumps = cjson.encode
cjson.loads = cjson.decode

small_and_simple = {
    'foo': 'bar',
    'food': 'barf',
    'good': 'bars',
    'dood': 'wheres your car?',
    'wheres your car': 'dude?',
}

mods = [json, simplejson, cjson, ujson, pickle, cPickle]

for mod in mods:
    print 'Starting %s... ' % (mod.__name__),
    start = time.time()
    for i in xrange(1000000):
        mod.dumps(small_and_simple)
    print 'done:', time.time() - start