Message 205934 - Python tracker

Message205934

Author	serhiy.storchaka
Recipients	Arfrever, BreamoreBoy, asvetlov, ezio.melotti, kmike, pitrou, serhiy.storchaka, vstinner
Date	2013-12-11.22:17:00
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1386800222.06.0.983066228127.issue15027@psf.upfronthosting.co.za>
In-reply-to

Content
Here is updated patch, synchronized with trunk. UTF-32 encoder now checks surrogates and therefore speedup is less (only up to 5 times). But this compensates regression in 3.4. On 32-bit Linux, Intel Atom N570 @ 1.66GHz: Py3.3 Py3.4 patched 531 (+245%) 489 (+274%) 1831 encode utf-32le 'A'10000 383 (+158%) 223 (+344%) 990 encode utf-32le '\u0100'10000 325 (+262%) 229 (+414%) 1177 encode utf-32le '\U00010000'10000 544 (+166%) 494 (+193%) 1448 encode utf-32be 'A'10000 384 (+67%) 223 (+188%) 642 encode utf-32be '\u0100'10000 323 (+108%) 229 (+193%) 671 encode utf-32be '\U00010000'10000

Content

Here is updated patch, synchronized with trunk. UTF-32 encoder now checks surrogates and therefore speedup is less (only up to 5 times). But this compensates regression in 3.4.

On 32-bit Linux, Intel Atom N570 @ 1.66GHz:

Py3.3        Py3.4        patched

531 (+245%)  489 (+274%)  1831   encode  utf-32le  'A'*10000
383 (+158%)  223 (+344%)  990    encode  utf-32le  '\u0100'*10000
325 (+262%)  229 (+414%)  1177   encode  utf-32le  '\U00010000'*10000

544 (+166%)  494 (+193%)  1448   encode  utf-32be  'A'*10000
384 (+67%)   223 (+188%)  642    encode  utf-32be  '\u0100'*10000
323 (+108%)  229 (+193%)  671    encode  utf-32be  '\U00010000'*10000

History
Date	User	Action	Args
2013-12-11 22:17:02	serhiy.storchaka	set	recipients: + serhiy.storchaka, pitrou, vstinner, ezio.melotti, Arfrever, asvetlov, BreamoreBoy, kmike
2013-12-11 22:17:02	serhiy.storchaka	set	messageid: <1386800222.06.0.983066228127.issue15027@psf.upfronthosting.co.za>
2013-12-11 22:17:02	serhiy.storchaka	link	issue15027 messages
2013-12-11 22:17:01	serhiy.storchaka	create