[Python-Dev] file.readinto performance regression in Python 3.2 vs. 2.7? (original) (raw)

Matt Joiner anacrolix at gmail.com
Fri Nov 25 13:02:53 CET 2011

I was under the impression this is already in 3.3?

On Nov 25, 2011 10:58 PM, "Eli Bendersky" <eliben at gmail.com> wrote:

> However, the original question remains - on the 100MB file also, although > in 2.7 readinto is 35% faster than readandcopy(), on 3.2 it's about the > same speed (even a few % slower). That said, I now observe with Python 3.3 > the same speed as with 2.7, including the readinto() speedup - so it > appears that the readinto() regression has been solved in 3.3? Any clue > about where it happened (i.e. which bug/changeset)? It would probably be http://hg.python.org/cpython/rev/a1d77c6f4ec1/ Great, thanks. This is an important change, definitely something to wait for in 3.3 Eli

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