morphium wrote:
Hi,
I'm new on this mailinglist and don't even know if it's the right one,
but here is my problem:
I'm running Debian Lenny and created a soft raid 5 there, with 6 Hard
disks (each 750 GB).
Now i did cryptsetup -c aes -s 128 /dev/md1 and cryptsetup luksOpen
/dev/md1 data.
Now, if I Benchmark with hdparm -t /dev/mapper/data, I don't get more
than 80 MB/s (hdparm -t /dev/md1 gives about 280MB/s read speed).
My CPU utilization is at 100% on both cores (It's an AMD 4200+, I'm
running 2.6.23 amd64 kernel).
So now my Question is: Is there a cheaper encryption method? So that i
can get at least 120MB/s, 160 would be fine.
I tried with -s 64, but it then tells me to check wether the aes-...
module is in the kernel - but obvious it is, else 128 wouldn't work.
If anyone would have a good suggestion to increase the speed, let me know.
Are you using the x86_64 optimized AES routine in the kernel ?
I'm using that on a raid0 with 256bit AES on an amd 4200+ and I get
85mb/s with hdparm.
/Andreas
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