Python 2.6 JSON decoding performance

Question

I\'m using the json module in Python 2.6 to load and decode JSON files. However I\'m currently getting slower than expected performance. I\'m using a test case

Answer 1

I was parsing the same file 10x. File size was 1,856,944 bytes.

Python 2.6:

yajl        serialize: 0.294  deserialize: 0.334  total: 0.627
cjson       serialize: 0.494  deserialize: 0.276  total: 0.769
simplejson  serialize: 0.554  deserialize: 0.268  total: 0.823
stdlib json serialize: 3.917  deserialize: 17.508 total: 21.425

Python 2.7:

yajl        serialize: 0.289  deserialize: 0.312  total: 0.601
cjson       serialize: 0.232  deserialize: 0.254  total: 0.486
simplejson  serialize: 0.288  deserialize: 0.253  total: 0.540
stdlib json serialize: 0.273  deserialize: 0.256  total: 0.528

Not sure why numbers are disproportionate from your results. I guess, newer libraries?