From: Artur Skawina <art.08.09@gmail.com>
To: Git Mailing List <git@vger.kernel.org>
Subject: Re: [PATCH 0/7] block-sha1: improved SHA1 hashing
Date: Thu, 06 Aug 2009 19:22:46 +0200 [thread overview]
Message-ID: <4A7B1166.8020507@gmail.com> (raw)
In-Reply-To: <alpine.LFD.2.01.0908060803140.3390@localhost.localdomain>
Linus Torvalds wrote:
> where the thing is loosely based on the Mozilla SHA1 routines but by the
> end doesn't really resemble them all that much. The Mozilla ones suck
> donkey d*ck in so many ways - unnecessary copies, idiotic byte-at-a-time
> build-up of the hash input etc.
>
> The end result is pretty much equivalent in performance to the OpenSSL
> SHA1 code for me on x86-64. Getting rid of OpenSSL gets rid of another
For those curious just how close the C version is to the various
asm and C implementations, the q&d microbenchmark is at
http://www.src.multimo.pl/YDpqIo7Li27O0L0h/sha1bench.tar.gz
In short: 88% of openssl speed on P3, 42% on P4, 66% on Atom.
artur
next prev parent reply other threads:[~2009-08-06 17:23 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-06 15:13 [PATCH 0/7] block-sha1: improved SHA1 hashing Linus Torvalds
2009-08-06 15:15 ` [PATCH 1/7] block-sha1: add new optimized C 'block-sha1' routines Linus Torvalds
2009-08-06 15:16 ` [PATCH 2/7] block-sha1: try to use rol/ror appropriately Linus Torvalds
2009-08-06 15:18 ` [PATCH 3/7] block-sha1: make the 'ntohl()' part of the first SHA1 loop Linus Torvalds
2009-08-06 15:20 ` [PATCH 4/7] block-sha1: re-use the temporary array as we calculate the SHA1 Linus Torvalds
2009-08-06 15:22 ` [PATCH 5/7] block-sha1: macroize the rounds a bit further Linus Torvalds
2009-08-06 15:24 ` [PATCH 6/7] block-sha1: Use '(B&C)+(D&(B^C))' instead of '(B&C)|(D&(B|C))' in round 3 Linus Torvalds
2009-08-06 15:25 ` [PATCH 7/7] block-sha1: get rid of redundant 'lenW' context Linus Torvalds
2009-08-06 18:25 ` [PATCH 2/7] block-sha1: try to use rol/ror appropriately Bert Wesarg
2009-08-06 17:22 ` Artur Skawina [this message]
2009-08-06 18:09 ` [PATCH 0/7] block-sha1: improved SHA1 hashing Linus Torvalds
2009-08-06 19:10 ` Artur Skawina
2009-08-06 19:41 ` Linus Torvalds
2009-08-06 20:08 ` Artur Skawina
2009-08-06 20:53 ` Linus Torvalds
2009-08-06 21:24 ` Linus Torvalds
2009-08-06 21:39 ` Artur Skawina
2009-08-06 21:52 ` Artur Skawina
2009-08-06 22:27 ` Linus Torvalds
2009-08-06 22:33 ` Linus Torvalds
2009-08-06 23:19 ` Artur Skawina
2009-08-06 23:42 ` Linus Torvalds
2009-08-06 22:55 ` Artur Skawina
2009-08-06 23:04 ` Linus Torvalds
2009-08-06 23:25 ` Linus Torvalds
2009-08-07 0:13 ` Linus Torvalds
2009-08-07 1:30 ` Artur Skawina
2009-08-07 1:55 ` Linus Torvalds
2009-08-07 0:53 ` Artur Skawina
2009-08-07 2:23 ` Linus Torvalds
2009-08-07 4:16 ` Artur Skawina
[not found] ` <alpine.LFD.2.01.0908071614310.3288@localhost.localdomain>
[not found] ` <4A7CBD28.6070306@gmail.com>
[not found] ` <4A7CBF47.9000903@gmail.com>
[not found] ` <alpine.LFD.2.01.0908071700290.3288@localhost.localdomain>
[not found] ` <4A7CC380.3070008@gmail.com>
2009-08-08 4:16 ` Linus Torvalds
2009-08-08 5:34 ` Artur Skawina
2009-08-08 17:10 ` Linus Torvalds
2009-08-08 18:12 ` Artur Skawina
2009-08-08 22:58 ` Artur Skawina
2009-08-08 23:36 ` Artur Skawina
-- strict thread matches above, loose matches on Subject: below --
2009-08-07 7:36 George Spelvin
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