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Thu Jun 8 15:35:46 CEST 2006 · https://mail.python.org/pipermail/python-dev/2006-June/065699.html

Thomas Wouters wrote:
> On 6/8/06, M.-A. Lemburg <mal at egenix.com> wrote:
> 
>> All this on AMD64, Linux2.6, gcc3.3.
> 
> 
> FWIW, my AMD64, linux 2.6, gcc 4.0 machine reports 29.0-29.5 usec for 2.5,
> 30.0-31.0 for 2.4 and 30.5-31.5 for 2.3, using the code you attached. In
> other words, 2.5 is definately not slower here. At least, not if I use the
> same compile options for 2.5 as for 2.4... ;-)

I checked, both Python versions were compiled using these
options (and the same compiler):

# Compiler options
OPT=            -DNDEBUG -g -O3 -Wall -Wstrict-prototypes
BASECFLAGS=      -fno-strict-aliasing

Perhaps it's a new feature in gcc 4.0 that makes the slow-down I see
turn into a speedup :-)

-- 
Marc-Andre Lemburg
eGenix.com

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