From: "Thomas Bächler" <thomas@archlinux.org>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] dm-crypt multithreaded yet?
Date: Wed, 08 Aug 2012 17:31:27 +0200 [thread overview]
Message-ID: <5022864F.8030402@archlinux.org> (raw)
In-Reply-To: <jvtt3d$1lm$1@dough.gmane.org>
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Am 08.08.2012 16:29, schrieb Brian J. Murrell:
> I thought I knew the answer to this question (dm-crypt multithreaded
> yet? no) but I had read in several places that dm-crypt had gained
> multithreaded capabilities. I'm still skeptical though. I certainly
> don't see it on Fedora 17's 3.3.4-5.fc17.x86_64 kernel.
>
> Sadly, I don't have an AES-NI capable CPU, but I do have 4 (real, 8 with
> HT enabled) cores and dm-crypting on my SSD reduces its performance down
> from about 260MB/s (native) to 95MB/s. :-( I would like to think I
> could get more performance out of it if more of the (usually available
> anyway) CPU could be thrown at it.
This is in 2.6.38 and later, I think:
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=c029772125594e31eb1a5ad9e0913724ed9891f2
The commit message also explains why you don't notice it.
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next prev parent reply other threads:[~2012-08-08 15:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-08 14:29 [dm-crypt] dm-crypt multithreaded yet? Brian J. Murrell
2012-08-08 15:31 ` Thomas Bächler [this message]
2012-08-08 15:45 ` Milan Broz
2012-08-09 3:17 ` Marc MERLIN
2012-08-09 10:09 ` Brian J. Murrell
2012-08-08 15:39 ` Milan Broz
2012-12-16 12:10 ` Brian J. Murrell
2012-12-16 18:15 ` Milan Broz
2012-12-16 21:29 ` Heinz Diehl
2012-12-16 21:43 ` Brian J. Murrell
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