Compare jsonpickle using python-cjson and simplejson

Test machine

Ubuntu 8.04, Intel Core 2 Duo 2.0GHz, 2.0 GB RAM

Task

Using an in-memory RSS feed that feedparser has parsed, encode then decode feed. Run 1000 times using python-cjson and 1000 times using simplejson. The code to run the benchmark is located in src/benchmark.py

Results

# python benchmark.py
Using cjson
0.013447819 sec/pass 
Using simplejson
0.019652153 sec/pass 

Reasoning

simplejson has definite advantages, especially on Google's App Engine, where external C/C++ python modules are not allowed. But, as these benchmarks show, cjson, when available is faster.