From: Yves-Alexis Perez <corsac@debian.org>
To: Milan Broz <mbroz@redhat.com>
Cc: dm-crypt@saout.de, Marc MERLIN <marc@merlins.org>
Subject: Re: [dm-crypt] aes-xts-plain with aes_x86_64 makes my SSD 5x slower than my encrypted HD
Date: Mon, 23 Jul 2012 13:09:40 +0200 [thread overview]
Message-ID: <1343041780.26887.19.camel@scapa> (raw)
In-Reply-To: <500D2B8E.3000908@redhat.com>
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On lun., 2012-07-23 at 12:46 +0200, Milan Broz wrote:
> So no wonder that you get slow operation - in dd/hdparm usually only
> one cpu is processing the request. If CPU is fast enough, no problem.
> If not you will see slowdown. AES-NI will speed up this on that cpu
> core,
> but will not help run request in parallel on multi-core systems.
Then I should see slow operations too, since I'm doing exactly the same
test. My guess is that is a kernel issue somewhere, but maybe we should
try a common ground (say, a grml live or some fedora live) and report
back?
Regards,
--
Yves-Alexis
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next prev parent reply other threads:[~2012-07-23 11:09 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 [this message]
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
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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