Subject: Re: AMD Geode LX Security Block (was Re: NetBSD on the Soekris net5501 status report)
To: Jared D. McNeill <jmcneill@invisible.ca>
From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
List: current-users
Date: 06/18/2007 14:16:01
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On Mon, Jun 18, 2007 at 07:49:43AM -0400, Jared D. McNeill wrote:
> On 16-Jun-07, at 2:02 PM, Jared D. McNeill wrote:
> >FYI, I imported the glxsb(4) driver from OpenBSD for crypto assist and r=
andom number generation.
>=20
> [For those of you just joining us, glxsb(4) is an AES/RNG security block =
found in the AMD Geode LX family of processors]
>=20
> Here's some performance numbers from openssl speed -evp aes-128-cbc, the =
first using sw crypto, the second using glxsb(4):
>=20
> 	The 'numbers' are in 1000s of bytes per second processed.
> 	type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 =
bytes
> 	aes-128-cbc       3712.69k     4057.03k     4176.33k     4206.79k     42=
12.15k
> 	aes-128-cbc       6680.49k    40836.42k   109531.96k   421803.47k 155727=
56.43k

I'd suggest correctness verification. ~15GB/s seems to be waaaay too fast:)

--=20
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!

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