[Python-Dev] Re: Who cares about the performance of these opcodes?
A.M. Kuchling
amk at amk.ca
Tue Mar 9 12:20:31 EST 2004
On Tue, 09 Mar 2004 08:59:52 -0500, Phillip J. Eby <pje at telecommunity.com>
wrote:
> I personally don't think it'll help much, if the goal is to reduce cache
> misses. After all, the code is all still there. But, it should not do
For a planned PyCon lightning talk, I'm benchmarking various combinations
of optimizer options.
One interesting result: CVS Python gets 25997 pystones on my machine when
compiled with
-O3 (the default), but 26707 when compiled with gcc's -Os flag. -Os
optimizes for size,
running the subset of the -O2 optimizations that don't increase code size.
The test script is http://www.amk.ca/files/misc/python-opt-benchmark.sh,
should anyone want
to run it. I'm now trying to figure out if -mregparm makes any
significant difference to Python's
performance.
--amk
More information about the Python-Dev
mailing list