Message 175048 - Python tracker

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Author	serhiy.storchaka
Recipients	Arfrever, Giovanni.Bajo, PaulMcMillan, Vlado.Boza, alex, arigo, benjamin.peterson, camara, christian.heimes, dmalcolm, koniiiik, lemburg, serhiy.storchaka, vstinner
Date	2012-11-07.07:40:29
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<[email protected]>
In-reply-to

Content
I tested different kind of strings. $ ./python -m timeit -n 1 -s "t = b'a' * 10*8" "hash(t)" $ ./python -m timeit -n 1 -s "t = 'a' 10*8" "hash(t)" $ ./python -m timeit -n 1 -s "t = '\u0100' 10*8" "hash(t)" $ ./python -m timeit -n 1 -s "t = '\U00010000' 10**8" "hash(t)" current SipHash bytes 181 msec 453 msec 2.5x UCS1 429 msec 453 msec 1.06x UCS2 179 msec 897 msec 5x UCS4 183 msec 1.79 sec 9.8x

I tested different kind of strings.

$ ./python -m timeit -n 1 -s "t = b'a' * 10**8"  "hash(t)"
$ ./python -m timeit -n 1 -s "t = 'a' * 10**8"  "hash(t)"
$ ./python -m timeit -n 1 -s "t = '\u0100' * 10**8"  "hash(t)"
$ ./python -m timeit -n 1 -s "t = '\U00010000' * 10**8"  "hash(t)"

       current   SipHash

bytes  181 msec  453 msec  2.5x
UCS1   429 msec  453 msec  1.06x
UCS2   179 msec  897 msec  5x
UCS4   183 msec  1.79 sec  9.8x

History
Date	User	Action	Args
2012-11-07 07:40:30	serhiy.storchaka	set	recipients: + serhiy.storchaka, lemburg, arigo, vstinner, christian.heimes, benjamin.peterson, Arfrever, alex, dmalcolm, Giovanni.Bajo, PaulMcMillan, Vlado.Boza, koniiiik, camara
2012-11-07 07:40:30	serhiy.storchaka	set	messageid: <[email protected]>
2012-11-07 07:40:30	serhiy.storchaka	link	issue14621 messages
2012-11-07 07:40:29	serhiy.storchaka	create