Re: Questions about loop-aes and the implementation of encryptedfilesystems

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"Eloy A. Paris" wrote:
> On Thu, Feb 26, 2004 at 08:37:42PM +0200, Jari Ruusu wrote:
> [...]
> > Here is benhmark I ran some time ago on my 300 MHz Pentium-2 test box. ATA
> > hard disk. Tests file reads and writes to ext2 file system partition.
> >
> > KERNEL      IMPLEMENTATION  MODE                WRITE MiB/s     READ MiB/s
> > 2.6.1       cryptoloop      single-key           5.21            4.08
> > 2.6.1       loop-AES        single-key           9.52            7.56
> > 2.6.1       loop-AES        multi-key(MD5 IV)    7.67            6.35
> > 2.4.22aa1   loop-AES        single-key          10.55           10.16
> > 2.4.22aa1   loop-AES        multi-key(MD5 IV)    8.75            8.13

I forgot to mention that above benchmark used AES128 encryption.

> Hhhmmm, will all the hype about the 2.6.x kernels and how great they
> are, any ideas why a 2.4.x kernel performs better than 2.6.x under this
> scenario?

Primary suspect is the anticipatory I/O scheduler in 2.6 kernels.

-- 
Jari Ruusu  1024R/3A220F51 5B 4B F9 BB D3 3F 52 E9  DB 1D EB E3 24 0E A9 DD

-
Linux-crypto:  cryptography in and on the Linux system
Archive:       http://mail.nl.linux.org/linux-crypto/


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