[dm-crypt] LUKS & TrueCrypt - Speed Test

Arno Wagner arno at wagner.name
Fri Jul 29 07:20:18 CEST 2011


Hi Jorge,

you can see that running the test several times gives you some 
appreciation for the variation in the measurement. Anyways,
this is what I would expect, i.e. TrueCrypt having a little
bit lower speed due to the userspace interface. 

Thanks for posting these!

Arno


On Thu, Jul 28, 2011 at 07:58:58PM -0400, Jorge F?bregas wrote:
> On 07/27/2011 07:18 PM, Jorge F?bregas wrote:
> > I decided to perform some tests on my Fedora 14 box.   This is not a
> > pro benchmark so be warned :)
> 
> Hi everyone,
> 
> I performed the tests again (twice for each test) but this time I
> formatted the LUKS partition using:
> 
> cryptsetup luksFormat -c aes-xts-plain -s 256 -h ripemd160 /dev/sdd1
> 
> ...so that I was more _similar_ to the TrueCrypt setup.  Also, between
> each test I run:
> 
> echo 3 > /proc/sys/vm/drop_caches
> 
> Here are the new results for the same payload (143 GB of data):
> 
> ### TRUECRYPT ####
> 
> 1st round:
> real	105m39.547s
> user	28m17.667s
> sys	42m25.300s
> 
> 
> 2nd round:
> real	105m40.271s
> user	28m21.893s
> sys	42m19.672s
> 
> 
> ### LUKS ###
> 
> 1st round:
> real	104m33.901s
> user	27m41.362s
> sys	41m0.339s
> 
> 
> 2nd round:
> real	104m44.913s
> user	27m42.364s
> sys	40m57.655s
> 
> 
> Now as you may see, LUKS is roughly around 1 minute ahead (sytem-time)
> compared to TrueCrypt.  It appears the change in cipher operation mode
> definitely affected the results (thing I should have done on the first
> place).
> 
> Cheers and thank your for the feedback!
> Jorge
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> 

-- 
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno at wagner.name 
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