On Feb 17, 4:20 pm, mdipierro <mdipie...@cs.depaul.edu> wrote:
> Look at this bug report
>
> http://bugs.python.org/issue7946
>
> specifically look at the benchmarks at the bottom. This kind of bugs
> affects web applications since they have threads with lots of IO.  One
> more reason to stay with python 2.5 for now.

For some background context, read:

   http://www.dabeaz.com/python/NewGIL.pdf

Based on the name, same guy as reported the bug has previously worked
in getting the GIL behaviour changed in Python 3.2 to address issues
in linked PDF. That bug report seems just to say that the changes they
made in Python 3.2 so far are not perfect as is showing up this bad
degradation for a particular use case. Just means they need to address
that particular behaviour and further optimise the code behaviour to
counter it before they release Python 3.2.

Overall the changes made to Python 3.2 GIL seem to be positive. Once
they sort any issues like this out, it would be good to see it back
ported to Python 2.X stream.

Anyway, not sure why you are holding this up as reason to stay with
Python 2.5. Python 2.6 and 3.1 both have old GIL code still and Python
3.2 isn't even released yet, so this is a bug for an unreleased
version.

Graham

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