gistfile1.py

#!/usr/bin/env python -u

# Using Python 2.6 
# Starting json...  done: 17.8986079693
# Starting simplejson...  done: 6.75326800346
# Starting cjson...  done: 2.19219493866
# Starting ujson...  done: 0.742480039597
# Starting pickle...  done: 43.2633650303
# Starting cPickle...  done: 6.45727396011
# Starting marshal...  done: 1.2130010128

# Using Python 2.7
# Starting json...  done: 5.84877085686
# Starting simplejson...  done: 6.65995502472
# Starting cjson...  done: 2.17661309242
# Starting ujson...  done: 0.743311882019
# Starting pickle...  done: 41.4778251648
# Starting cPickle...  done: 7.08554387093
# Starting marshal...  done: 1.19155406952

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

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, marshal]

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