[dm-crypt] LUKS & TrueCrypt - Speed Test
jorge.fabregas at gmail.com
Thu Jul 28 15:20:50 CEST 2011
On 07/28/2011 03:40 AM, Milan Broz wrote:
> echo 3 > /proc/ss/cm/drop_caches
> does the same in more controlled way
Arraign I didn't know that one. Good to know!
> Can you use something more recent? There were huge changes.
> The same for user space.
I always stay with the stock kernel (Fedora 14) so I don't have to take
care of bug-fixes & security-updates for the kernel :) ...but I'll try
to run a newer kernel If I do the test again.
> BTW do you know that TC7 uses dm-crypt as backend? So with the same
> mode and alignemnt you should get the same results
> (except chained ciphers in TC).
I had no idea it used dm-crypt! That's great.
> Perhaps because you tested different modes... Use the same mode
> in cryptsetup
> cryptstup luksFormat -c aes-xts-plain64 -s 512 ...
> I would really wonder if speed differs, TC7 uses dmsetup to configure
> dm-crypt mapping on Linux :-) It uses user space (and FUSE) only for old
> containers and some magic for hidden container.
Great, I'll do that. I'll perform the tests again (everything equal:
kernel, disk, data, empty buffers, rsync) but I'll use xts this time for
LUKS. I'll report back.
More information about the dm-crypt