diff --git a/source/performance.txt b/source/performance.txt index ce2e64d001f08210776f4c3b3575baf2f7e7f698_c291cmNlL3BlcmZvcm1hbmNlLnR4dA==..5c47f7c99eeae6e0da0cf0812997453821430a0c_c291cmNlL3BlcmZvcm1hbmNlLnR4dA== 100644 --- a/source/performance.txt +++ b/source/performance.txt @@ -64,8 +64,9 @@ * **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 PyPy. Sometimes the JIT is able to do a good job on them, and + sometimes not. So it is generally still slower in PyPy than in CPython, + but not always (``heapq``, ``json``). We generally consider things that are slower on PyPy than CPython to be bugs of PyPy. If you find some issue that is not documented here,