On Wed, Aug 7, 2013 at 9:58 PM, Glyph <glyph@twistedmatrix.com> wrote:

Just curious here: what version of PyPy did you do your tests with? From what I've heard, the somewhat recently-released 2.1 should have improved JSON parsing performance.

FWIW, Maciej commented that they don't expect to be *faster*, because they actually care about the JSON spec or checking return values. Things which ultrajson conveniently ignores :-) It's pretty easy to do the wrong thing fast, but that seems to be a common theme in this thread.

lvh