[New-bugs-announce] [issue1045] Performance regression in 2.5

Andreas Kloeckner report at bugs.python.org
Tue Aug 28 17:06:24 CEST 2007

New submission from Andreas Kloeckner:

The attached program uncovers a two-fold performance regression in
Python 2.5 with respect to Python 2.4. Below, the "element-wise" case
goes from 2.5 seconds in 2.4 to about 4 in 2.5. Since that's a pretty
serious increase, I thought I'd point it out.

$ python2.5 periodic_test.py
elwise 3.91989398003
collective 1.21577095985

$ python2.4 periodic_test.py
elwise 2.50014710426
tuplewise 1.35589385033

components: Interpreter Core, Library (Lib)
files: periodic_test.py
messages: 55366
nosy: inducer
severity: normal
status: open
title: Performance regression in 2.5
type: behavior
versions: Python 2.5

Tracker <report at bugs.python.org>
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