[pypy-dev] Pypy is slower than Python

Maciej Fijalkowski fijall at gmail.com
Wed May 1 00:13:24 CEST 2013

This is a kind of example where our GC card marking does not quite
work. I think the improve-rdict branch should improve this kind of
code quite a bit (but I still have to finish it)

On Tue, Apr 30, 2013 at 6:51 PM, Armin Rigo <arigo at tunes.org> wrote:
> Hi,
> On Tue, Apr 30, 2013 at 5:26 AM, cat street <gamcat at gmail.com> wrote:
>> You can test this code:
>> (...)
> For no good reason it seems that on this example CPython is quite a
> bit faster on Linux64 than on Linux32.  PyPy is also a bit faster on
> Linux64 but not by such a large margin.  In my tests (PyPy vs CPython)
> it ends up the same on Linux32, and on Linux64 PyPy is a bit slower
> (20%?).  I think it's good enough given the type of code (completely
> unoptimizable as far as I can tell, unless we go for "we can kill the
> whole loop in this benchmark", which is usually a bit pointless in
> real code).  If others want to look in detail at JIT traces, feel free
> to.
> A bientôt,
> Armin.
> _______________________________________________
> pypy-dev mailing list
> pypy-dev at python.org
> http://mail.python.org/mailman/listinfo/pypy-dev

More information about the pypy-dev mailing list