From: Heinz Diehl <htd@fancy-poultry.org>
To: Milan Broz <mbroz@redhat.com>
Cc: dm-crypt@saout.de
Subject: Re: [dm-crypt] aes-xts-plain with aes_x86_64 makes my SSD 5x slower than my encrypted HD
Date: Tue, 24 Jul 2012 16:06:49 +0200 [thread overview]
Message-ID: <20120724140649.GA21528@fancy-poultry.org> (raw)
In-Reply-To: <500D2B8E.3000908@redhat.com>
On 23.07.2012, Milan Broz wrote:
> I do not like this dmcrypt mode a we tried to fix it. There is a bunch of patches
> from Mikulas Patocka which switches parallelization to use all available
> cpus (if not limited by paramater).
> In my tests it improved performance in some cases but not in all situations
> (there were some slow downs which scares me).
> (You can see patches here http://people.redhat.com/mpatocka/patches/kernel/dm-crypt-paralelizace/)
This is definitely the way to go, in the age of
multicore-systems. Some of the patches are already included in
linux-3.5, and the rest needs to be rebased on top of it. I'd like to
try the whole series on a quadcore testing machine, but I'm not
familiar with the code in most of the patches, and only one single
wrong merge could lead to wrong conclusions.
next prev parent reply other threads:[~2012-07-24 14:06 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-22 19:07 [dm-crypt] aes-xts-plain with aes_x86_64 makes my SSD 5x slower than my encrypted HD Marc MERLIN
2012-07-22 19:47 ` Yves-Alexis Perez
2012-07-22 20:39 ` Marc MERLIN
2012-07-22 21:47 ` Arno Wagner
2012-07-23 6:07 ` Yves-Alexis Perez
2012-07-23 6:28 ` Marc MERLIN
2012-07-23 8:14 ` Arno Wagner
2012-07-23 10:46 ` Milan Broz
2012-07-23 11:09 ` Yves-Alexis Perez
2012-07-23 11:37 ` Milan Broz
2012-07-23 15:08 ` André Gall
2012-07-23 17:27 ` André Gall
2012-07-24 14:06 ` Heinz Diehl [this message]
2012-07-24 14:16 ` Milan Broz
2012-07-23 16:12 ` Marc MERLIN
2012-07-23 16:19 ` Yves-Alexis Perez
2012-07-23 17:54 ` Marc MERLIN
2012-07-23 19:26 ` Yves-Alexis Perez
2012-07-23 17:15 ` Milan Broz
2012-07-23 17:51 ` Marc MERLIN
2012-07-23 21:31 ` Milan Broz
2012-07-24 5:57 ` Marc MERLIN
2012-07-24 6:25 ` Heinz Diehl
2012-07-24 15:02 ` Marc MERLIN
2012-07-24 15:19 ` Milan Broz
2012-07-24 16:09 ` Marc MERLIN
2012-07-24 13:54 ` Milan Broz
[not found] ` <500E9099.8050501@redhat.com>
2012-07-24 14:27 ` Heinz Diehl
2012-07-24 14:58 ` Heinz Diehl
2012-07-24 15:38 ` Marc MERLIN
2012-07-24 16:48 ` Heinz Diehl
2012-07-24 6:11 ` Heinz Diehl
2012-07-22 21:55 ` Marc MERLIN
2012-07-22 20:22 ` Heinz Diehl
2012-08-12 12:49 ` Pasi Kärkkäinen
2012-08-16 7:43 ` Marc MERLIN
[not found] ` <502D1F96.3080905@andregall.de>
2012-08-16 17:57 ` Marc MERLIN
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