From: Matthias Schniedermeyer <ms@citd.de>
To: "Brian J. Murrell" <brian@interlinx.bc.ca>
Cc: dm-crypt@saout.de
Subject: Re: [dm-crypt] Using AES-256 Controller Card
Date: Mon, 27 Aug 2012 20:16:49 +0200 [thread overview]
Message-ID: <20120827181649.GA8904@citd.de> (raw)
In-Reply-To: <k1g40e$ton$1@ger.gmane.org>
On 27.08.2012 11:33, Brian J. Murrell wrote:
> On 12-08-27 11:23 AM, Milan Broz wrote:
> >
> > It is (SATA) Chipset FDE (full disk encryption), IOW few layers below
> > dmcrypt operates.
>
> Is there any add-on (i.e. USB perhaps) hardware that can assist dm-crypt?
Contrary to OP: AES-NI
I did the test that is descripted on this page:
http://wiki.debianforum.de/Benchmark_f%C3%BCr_Festplattenverschl%C3%BCsselung
(Extended to 10GiB instead of the described 512MiB)
My computer (Core i7 3770): does:
10735321088 bytes (11 GB) copied, 9.62266 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.71015 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.67001 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.61184 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.79301 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.96204 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.59942 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.61019 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.72707 s, 1.1 GB/s
10735321088 bytes (11 GB) copied, 9.88943 s, 1.1 GB/s
So it's between 1066.52 MiB/s and 1027.7 MiB/s
While the test is running, one core is @100%, the other 3 @50%
(The 4 HT-Cores aren't used) so there is a bottleneck somewhere and
this isn't the theoretical maximum.
Bis denn
--
Real Programmers consider "what you see is what you get" to be just as
bad a concept in Text Editors as it is in women. No, the Real Programmer
wants a "you asked for it, you got it" text editor -- complicated,
cryptic, powerful, unforgiving, dangerous.
next prev parent reply other threads:[~2012-08-27 18:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-26 18:00 [dm-crypt] Using AES-256 Controller Card Michael Wisniewski
2012-08-27 13:42 ` Michael Wisniewski
2012-08-27 15:23 ` Milan Broz
2012-08-27 15:24 ` Michael Wisniewski
2012-08-27 15:33 ` Brian J. Murrell
2012-08-27 18:16 ` Matthias Schniedermeyer [this message]
2012-08-27 18:31 ` Michael Wisniewski
2012-08-27 18:35 ` Brian J. Murrell
2012-08-27 18:56 ` Matthias Schniedermeyer
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