[Python-Dev] Python & GCC 3.0

Fred L. Drake, Jr. fdrake@acm.org
Tue, 19 Jun 2001 11:07:48 -0400 (EDT)

Barry A. Warsaw writes:
 > It'd be interesting to see if there are any performance
 > improvements, esp. on x86 boxen.

GCC 2.95.3:

cj42289-a(.../python/linux); time ./python -tt ../Lib/test/pystone.py
Pystone(1.1) time for 10000 passes = 1.58
This machine benchmarks at 6329.11 pystones/second
1.66user 0.01system 0:03.40elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (280major+241minor)pagefaults 0swaps

GCC 3.0:

cj42289-a(.../python/linux); cd ../linux-gcc-3.0/
cj42289-a(.../python/linux-gcc-3.0); time ./python -tt ../Lib/test/pystone.py
Pystone(1.1) time for 10000 passes = 1.65
This machine benchmarks at 6060.61 pystones/second
1.77user 0.01system 0:03.52elapsed 50%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (307major+239minor)pagefaults 0swaps

There is a little variation with multiple run, but it varies less than
5% from the numbers above.  Bumping up the LOOPS constant in
pystone.py changes the numbers a small bit, but the relationship
remains constant.

This is one a Linux-Mandrake 7.2 installation with non-cooker updates
installed, and still using the Linux 2.2 kernel:

cj42289-a(.../python/linux-gcc-3.0); uname -a
Linux cj42289-a.reston1.va.home.com 2.2.17-21mdk #1 Thu Oct 5 13:16:08 CEST 2000 i686 unknown


Fred L. Drake, Jr.  <fdrake at acm.org>
PythonLabs at Digital Creations