luks disk encryption benchmarks
Travis H.
travis+ml-cryptography at subspacefield.org
Wed Jun 13 01:27:08 EDT 2007
On Tue, Jun 05, 2007 at 07:00:51PM -0500, Travis H. wrote:
> I just did some performance testing on a file server (debian 4.0) and
> thought I'd share the figures, both raw and using the luks
> cryptosystem described here:
>
> http://luks.endorphin.org/about
>
> Here's the specs:
>
> AMD Athlon 64 x2 3600+ (1800MHz)
> 2GB 800MHz DDR2 ECC DRAM
> Asus M2N32WS motherboard
> 3ware 9650SE SATA RAID controller (PCI Express) in PCI Express x16 slot
> 4 Seagate SATA-II 500GB 7200 RPM drives with NCQ in RAID 10 configuration
> 16kB stripe size
> Debian 4.0 stable (etch)
>
> My hunch is that over NFS, even with gigabit ethernet, there will be no measurable
> difference between encrypted and non-encrypted storage.
raw over NFS:
Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
nfsclient 4G 16756 61 40475 21 12033 9 15669 85 15564 6 445.8 3
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 2329 12 8480 32 4185 22 1857 10 9742 27 3692 18
nfsclient,4G,16756,61,40475,21,12033,9,15669,85,15564,6,445.8,3,16,2329,12,8480,32,4185,22,1857,10,9742,27,3692,18
crypt over NFS:
Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
nfsclient 4G 16416 61 33488 13 10666 9 14084 73 16143 7 392.7 3
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 2218 12 7444 25 4248 20 2288 12 9401 28 3575 15
nfsclient,4G,16416,61,33488,13,10666,9,14084,73,16143,7,392.7,3,16,2218,12,7444,25,4248,20,2288,12,9401,28,3575,15
So... yeah, pretty minimal - IMHO, not worth worrying about.
--
``To know love, be like the running brook, which though deaf,
sings its melody for others to hear.'' -- Master Po, "Kung Fu"
<URL:http://www.subspacefield.org/~travis/> -><- dharma <>< advaita
For a good time on my UBE blacklist, email john at subspacefield.org.
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