Message 181754 - Python tracker

Message181754

Author	pitrou
Recipients	ezio.melotti, gvanrossum, pitrou, serhiy.storchaka
Date	2013-02-09.19:58:53
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1360439933.66.0.882068038126.issue17170@psf.upfronthosting.co.za>
In-reply-to

Content
Some crude C benchmarking on this computer: - calling PyUnicode_Replace is 35 ns (per call) - calling "hundred".replace is 125 ns - calling PyArg_ParseTuple with the same signature as "hundred".replace is 80 ns Therefore, most of the overhead (125 - 35 = 90 ns) is in calling PyArg_ParseTuple() to unpack the method arguments.

Content

Some crude C benchmarking on this computer:
- calling PyUnicode_Replace is 35 ns (per call)
- calling "hundred".replace is 125 ns
- calling PyArg_ParseTuple with the same signature as "hundred".replace is 80 ns

Therefore, most of the overhead (125 - 35 = 90 ns) is in calling PyArg_ParseTuple() to unpack the method arguments.

History
Date	User	Action	Args
2013-02-09 19:58:53	pitrou	set	recipients: + pitrou, gvanrossum, ezio.melotti, serhiy.storchaka
2013-02-09 19:58:53	pitrou	set	messageid: <1360439933.66.0.882068038126.issue17170@psf.upfronthosting.co.za>
2013-02-09 19:58:53	pitrou	link	issue17170 messages
2013-02-09 19:58:53	pitrou	create