[New-bugs-announce] [issue6013] json slower than simplejson

Thomas Heller report at bugs.python.org
Wed May 13 16:33:01 CEST 2009

New submission from Thomas Heller <theller at ctypes.org>:

The json package is a lot slower than the simplejson package.  Both
packages have their C compiled speedup module; however:

  C:\>py26 -m timeit -s "from json import dumps, loads"
  1000 loops, best of 3: 618 usec per loop

  C:\>py26 -m timeit -s "from simplejson import dumps, loads"
  10000 loops, best of 3: 31 usec per loop

This is on Windows XP, with Python 2.6.2.

messages: 87685
nosy: theller
severity: normal
status: open
title: json slower than simplejson
type: performance
versions: Python 2.6

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