[pypy-commit] pypy.org extradoc: Document modules where we don't have an RPython version at all.

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: extradoc
Changeset: r317:617ca383d121
Date: 2012-02-11 18:59 +0100
http://bitbucket.org/pypy/pypy.org/changeset/617ca383d121/

Log:	Document modules where we don't have an RPython version at all.

diff --git a/source/performance.txt b/source/performance.txt
--- 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.