[pypy-commit] pypy.org extradoc: Document modules where we don't have an RPython version at all.
noreply at buildbot.pypy.org
Sat Feb 11 18:59:53 CET 2012
Author: Armin Rigo <arigo at tunes.org>
Date: 2012-02-11 18:59 +0100
Log: Document modules where we don't have an RPython version at all.
diff --git a/source/performance.txt b/source/performance.txt
@@ -56,6 +56,11 @@
might be worthwhile to consider rewriting it as a pure Python version,
using something like ``ctypes``.
+* **Missing RPython modules**: A few modules of the standard library
+ (like ``csv`` and ``cPickle``) are in C in CPython, but in pure Python
+ in PyPy. Sometimes the JIT is able to do a relatively good job, and
+ sometimes not. In any case it is still slower in PyPy than in CPython.
We generally consider things that are slower on PyPy than CPython bugs
of PyPy. In case you find some issue that is not documented here,
please report it to our `bug tracker`_ for investigation.
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