From: Milan Broz <gmazyland@gmail.com>
To: Romain Francoise <romain@orebokech.com>
Cc: dm-crypt <dm-crypt@saout.de>
Subject: Re: [dm-crypt] Switch to XTS mode for LUKS in cryptsetup in 1.6.0 (Was Re: [ANNOUNCE] cryptsetup 1.6.0-rc1)
Date: Fri, 04 Jan 2013 20:14:42 +0100 [thread overview]
Message-ID: <50E72A22.3060007@gmail.com> (raw)
In-Reply-To: <87sj6gn5g7.fsf@silenus.orebokech.com>
On 01/04/2013 07:55 PM, Romain Francoise wrote:
> Milan Broz <gmazyland@gmail.com> writes:
>
>> Any serious objections to not do that now?
>
> How does it compare to cbc in terms of (real-world) performance?
It is slower but on recent systems it shouldn't not be bottleneck
(even with fast storage).
I really prefer security to performance here.
But anyway, there is now benchmark command to test it.
An example (on my 3 year old Thinkpad x201 notebook with AES-NI):
# Tests are approximate using memory only (no storage IO).
# Algorithm | Key | Encryption | Decryption
aes-cbc 128b 789.0 MiB/s 1899.0 MiB/s
aes-cbc 256b 595.0 MiB/s 1445.0 MiB/s
aes-xts 256b 572.0 MiB/s 571.4 MiB/s
aes-xts 512b 465.0 MiB/s 467.0 MiB/s
(I think XTS got some more optimization in recent kernel, this is from 3.6.)
You can try it yourself, just run "cryptsetup benchmark" with 1.6.0-rc1,
perhaps we will need some new FAQ entry here.
Milan
next prev parent reply other threads:[~2013-01-04 19:14 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-29 21:40 [dm-crypt] [ANNOUNCE] cryptsetup 1.6.0-rc1 Milan Broz
2012-12-29 22:24 ` Matthias Schniedermeyer
2012-12-29 22:42 ` Milan Broz
2012-12-29 23:21 ` Matthias Schniedermeyer
2012-12-29 23:15 ` Matthias Schniedermeyer
2012-12-29 23:31 ` Milan Broz
2013-01-02 12:50 ` Matthias Schniedermeyer
2013-01-02 20:55 ` Milan Broz
2012-12-30 8:38 ` Arno Wagner
2012-12-30 8:56 ` Sven Eschenberg
2012-12-30 10:20 ` Arno Wagner
2012-12-30 11:40 ` Milan Broz
2013-01-06 12:16 ` Yves-Alexis Perez
2013-01-06 16:24 ` Milan Broz
2013-01-07 6:23 ` Yves-Alexis Perez
2013-01-07 8:53 ` Milan Broz
2013-01-07 11:21 ` Sven Eschenberg
2013-01-07 18:12 ` Milan Broz
2013-01-07 19:20 ` Sven Eschenberg
2013-01-21 21:01 ` Yves-Alexis Perez
2012-12-30 11:47 ` Milan Broz
2013-01-05 19:47 ` Jonas Meurer
2012-12-30 9:03 ` Milan Broz
2013-01-04 11:50 ` [dm-crypt] Switch to XTS mode for LUKS in cryptsetup in 1.6.0 (Was Re: [ANNOUNCE] cryptsetup 1.6.0-rc1) Milan Broz
2013-01-04 11:53 ` Ralf Ramsauer
2013-01-04 12:18 ` Milan Broz
2013-01-04 16:26 ` Arno Wagner
2013-01-04 20:20 ` Heinz Diehl
2013-01-04 20:56 ` Milan Broz
2013-01-04 22:05 ` Arno Wagner
2013-01-04 22:39 ` Milan Broz
2013-01-05 17:20 ` Arno Wagner
2013-01-05 18:25 ` Milan Broz
2013-01-05 19:47 ` Arno Wagner
2013-01-04 13:39 ` Christoph Anton Mitterer
2013-01-04 16:17 ` Arno Wagner
2013-01-04 17:36 ` Zdenek Kaspar
2013-01-04 18:55 ` Romain Francoise
2013-01-04 19:14 ` Milan Broz [this message]
2013-01-04 21:56 ` Arno Wagner
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