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Date: Tue, 15 Mar 2011 01:44:09 +0100
From: Hanno Foest <hurga-crypt@tigress.com>
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Subject: Re: [dm-crypt] Slow I/O with LUKS on amd64
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On Wed Mar 9 09:11:21 CET 2011, Thomas Damgaard wrote:

> I have recently switched from i386 to amd64. After switching to 64
> bit, I/O on LUKS encrypted devices became horribly slow.

I had the same issue with Ubuntu 10.10. After installing a kernel from
the upcoming 11.04, doing a 'time /usr | wc -l' went from 3 minutes to 6
seconds. And yes, I dropped my caches. :)

I installed the following image, BTW:
//launchpadlibrarian.net/65900455/linux-image-2.6.38-6-generic_2.6.38-6.34_amd64.deb

Hanno