Message 175082 - Python tracker

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Author	Giovanni.Bajo
Recipients	Arfrever, Giovanni.Bajo, PaulMcMillan, Vlado.Boza, alex, arigo, benjamin.peterson, camara, christian.heimes, dmalcolm, koniiiik, lemburg, serhiy.storchaka, vstinner
Date	2012年11月07日.11:26:19
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<E3663F6C-E6D2-447E-B07D-47BD335DA5A2@gmail.com>
In-reply-to	<1352274030.09.0.552811539255.issue14621@psf.upfronthosting.co.za>

Content
Il giorno 07/nov/2012, alle ore 08:40, Serhiy Storchaka <report@bugs.python.org> ha scritto: > Serhiy Storchaka added the comment: > > 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 Hi Serhiy, can you please attach the generated assembly code for the siphash function with your compiler and your optimization flags (that is, the one that produces the above results)? Thanks! -- Giovanni Bajo

Content

Il giorno 07/nov/2012, alle ore 08:40, Serhiy Storchaka <report@bugs.python.org> ha scritto:
> Serhiy Storchaka added the comment:
> 
> 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
Hi Serhiy,
can you please attach the generated assembly code for the siphash function with your compiler and your optimization flags (that is, the one that produces the above results)?
Thanks!
-- 
Giovanni Bajo

History
Date	User	Action	Args
2012年11月07日 11:26:19	Giovanni.Bajo	set	recipients: + Giovanni.Bajo, lemburg, arigo, vstinner, christian.heimes, benjamin.peterson, Arfrever, alex, dmalcolm, PaulMcMillan, serhiy.storchaka, Vlado.Boza, koniiiik, camara
2012年11月07日 11:26:19	Giovanni.Bajo	link	issue14621 messages
2012年11月07日 11:26:19	Giovanni.Bajo	create

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