From mboxrd@z Thu Jan  1 00:00:00 1970
From: Artur Skawina <art.08.09@gmail.com>
Subject: Re: x86 SHA1: Faster than OpenSSL
Date: Thu, 06 Aug 2009 09:45:01 +0200
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References: <20090805181755.22765.qmail@science.horizon.com> <alpine.LFD.2.01.0908051352280.3390@localhost.localdomain> <alpine.LFD.2.01.0908051545000.3390@localhost.localdomain> <alpine.LFD.2.01.0908051800030.3390@localhost.localdomain> <alpine.LFD.2.00.0908052144430.16073@xanadu.home> <alpine.LFD.2.01.0908051902580.3390@localhost.localdomain> <4A7A4BC5.7010106@gmail.com> <alpine.LFD.2.01.0908052024081.3390@localhost.localdomain> <4A7A5723.6070704@gmail.com> <alpine.LFD.2.01.0908052120330.3390@localhost.localdomain> <4A7A6DBC.9010107@gmail.com> <4A7A7074.1060506@gmail.com>
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Cc: Nicolas Pitre <nico@cam.org>, George Spelvin <linux@horizon.com>,
	Junio C Hamano <gitster@pobox.com>, git@vger.kernel.org
To: Linus Torvalds <torvalds@linux-foundation.org>
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Artur Skawina wrote:
> 
> and my atom seems to like the compact loops too: 

no, that was wrong, i forgot to turn off the ondemand governor...

the unrolled loops are in fact much faster and the numbers
look more reasonable, after a few tweaks even on a P4.
Now i just need to check how well it does compared to the
asm implementations...

artur

#             TIME[s] SPEED[MB/s]
# ATOM
rfc3174         2.199       27.75
linus          0.8642       70.62
linusas         1.606       38.01
linusas2       0.8763       69.65
mozilla         2.813        21.7
mozillaas       2.539       24.04
# P4
rfc3174         1.402       43.53
linus          0.5835       104.6
linusas        0.4625         132
linusas2       0.4456         137
mozilla         1.529       39.91
mozillaas       1.131       53.96
# P3
rfc3174         5.019       12.16
linus            1.86       32.81
linusas         3.108       19.64
linusas2        1.812       33.68
mozilla         6.431        9.49
mozillaas       5.868        10.4