[pypy-dev] which xml libraries? was (Re: PyPy 1.4 released)

Maciej Fijalkowski fijall at gmail.com
Wed Dec 1 09:00:12 CET 2010

On Wed, Dec 1, 2010 at 9:48 AM, Stefan Behnel <stefan_ml at behnel.de> wrote:
> Paolo Giarrusso, 01.12.2010 00:34:
>> Anyway, this does not interact with benchmarks above - Stefan, I still
>> don't get why you complained that pyexpat is slow by showing
>> benchmarks for another module, I guess I do not understand your email,
>> but it asks "reasonable?" after Amaury talks about pyexpat.
> Well, in CPython, I can see little to no reason why anyone would go as
> low-level as pyexpat when you can use cElementTree. So IMHO the level to
> compare is what people would normally use rather than what people could
> potentially use if they were beaten hard enough.
> Stefan


Sure, makes sense :-) I think one of the reasons for some slowdown is
that calls from C are not jitted if they don't contain loops
themselves. This doesn't explain the whole thing obviously, because
there is something really wrong going on looking at numbers.

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