[Cython] transform efficiency

[Stefan Behnel]

Hi,

Lisandro Dalcin wrote:
> On Mon, Sep 8, 2008 at 1:46 PM, Dag Sverre Seljebotn
>> For my own uses, gcc still uses *a lot* more running-time than Cython,

Same for lxml. Cython is still several times faster than gcc, at least with a
high optimisation level. It has become slower during the summer, though, so I
think the transformations take their CPU cycles. But they also enabled a lot
of great features and optimisations that really pay for the additional run-time.


> That's the situation for me, too. As a side note, I never experienced
> any speed-up from using a compiled 'Scanners.so' in my projects.

The gain is not large, but it does make a difference if you have a lot of
Cython code to parse.

Stefan