[pypy-issue] [issue1123] PyPy 1.8 15 times slower than cPython2.7

Amaury Forgeot d Arc tracker at bugs.pypy.org
Wed Apr 11 18:01:29 CEST 2012

Amaury Forgeot d Arc <amauryfa at gmail.com> added the comment:

PyPy supports the Python C API for extension modules, but it is known to be *very* slow.

Just to give an idea why, pypy objects are movable, so the usual PyObject* pointer is an 
emulation and a dictionary lookup is needed each time the pypy/C border is crossed.

nosy: +afa
status: unread -> chatting

PyPy bug tracker <tracker at bugs.pypy.org>

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