[Python-Dev] Status of json (simplejson) in cpython

[Matt Billenstein]

On Sun, Apr 17, 2011 at 08:22:20AM +0200, Stefan Behnel wrote:
> Matt Billenstein, 17.04.2011 00:47:
> >On Sat, Apr 16, 2011 at 01:30:13PM +0200, Antoine Pitrou wrote:
> >>On Sat, 16 Apr 2011 00:41:03 +0000
> >>Matt Billenstein wrote:
> >>>
> >>>Slightly less crude benchmark showing simplejson is quite a bit faster:
> >>>
> >>>http://pastebin.com/g1WqUPwm
> >>>
> >>>250ms vs 5.5s encoding and decoding an 11KB json object 1000 times...
> >>
> >>This doesn't have much value if you don't say which version of Python
> >>you ran json with. You should use 3.2, otherwise you might miss some
> >>optimizations.
> >
> >Yes, that was 2.6.5 -- 3.2 native json is comparable to simplejson here taking
> >about 330ms...
> 
> From the POV of CPython 3.2, is "native" Python or C?

"Native" as in the version that ships with 3.2.

And actually I think my test with 2.6.5 wasn't using the C extension for some
reason so that 5.5s number isn't right -- a fresh build of 2.7.1 gives me a
runtime of around 350ms.

m

-- 
Matt Billenstein
matt at vazor.com
http://www.vazor.com/