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Re: Linus' sha1 is much faster!
From: |
Giuseppe Scrivano |
Subject: |
Re: Linus' sha1 is much faster! |
Date: |
Mon, 17 Aug 2009 19:32:31 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux) |
Hi,
These are the results I reported (median of 5 plus an additional not
considered first run) on the Steve Reid's SHA1 implementation using the
same flags to the compiler that I used for previous tests.
GCC 4.3.3: real 0m2.627s
GCC 4.4.1: real 0m3.742s
In both cases it showed to be slower than other implementations I have
already tried.
Additional note: as for gnulib SHA1, GCC 4.4.1 produced slower code than
GCC 4.3.3.
Cheers,
Giuseppe
Steven Noonan <address@hidden> writes:
>
> Interesting. I compared Linus' implementation to the public domain one
> by Steve Reid[1], which is used in OpenLDAP and a few other projects.
> Anyone with some experience testing these kinds of things in a
> statistically sound manner want to try it out? In my tests, I got
> this:
>
> (average of 5 runs)
> Linus' sha1: 283MB/s
> Steve Reid's sha1: 305MB/s
>
> - Steven
>
> [1]
> http://gpl.nas-central.org/SYNOLOGY/x07-series/514_UNTARED/source/openldap-2.3.11/libraries/liblutil/sha1.c
- Re: Linus' sha1 is much faster!, (continued)