Message 149728 - Python tracker

Message149728

Author	vstinner
Recipients	Boris.FELD, collinwinter, ezio.melotti, flox, loewis, pitrou, vstinner
Date	2011-12-18.00:59:59
SpamBayes Score	0.00019080356
Marked as misclassified	No
Message-id	<1324169999.98.0.690551691801.issue13621@psf.upfronthosting.co.za>
In-reply-to

Content
> "...text.with.2000.lines...replace("\n", " ") (10): -37.668161% I also noticed a difference between Python 3.2 and 3.3, but Python 3.3 is 13% faster* (and not slower). This benchmark is not really representative because stringbench only tests .replace() with ASCII. Replace requires to scan the result to check the next maximum character, except for ASCII. So expect a performance regression... except for ASCII.

Content

> "...text.with.2000.lines...replace("\n", " ") (*10): -37.668161%

I also noticed a difference between Python 3.2 and 3.3, but Python 3.3 is 13% *faster* (and not slower). This benchmark is not really representative because stringbench only tests .replace() with ASCII. Replace requires to scan the result to check the next maximum character, except for ASCII. So expect a performance regression... except for ASCII.

History
Date	User	Action	Args
2011-12-18 01:00:00	vstinner	set	recipients: + vstinner, loewis, collinwinter, pitrou, ezio.melotti, flox, Boris.FELD
2011-12-18 00:59:59	vstinner	set	messageid: <1324169999.98.0.690551691801.issue13621@psf.upfronthosting.co.za>
2011-12-18 00:59:59	vstinner	link	issue13621 messages
2011-12-18 00:59:59	vstinner	create