Re: VIA Eden HW encryption support users?

Jan Klod napsal(a):
> On Tuesday 26 August 2008 22:46:19 you wrote:
>> Jan-
>>
>> I have five VIA/Centaur processor based systems from various eras (PadLock
>> rev. 1 and rev. 2 feature-sets).
>>
>> If you give me a specific scenario to work through, I can probably generate
>> at least some of the data you're looking for.
> 
> At least I would like to be sure if it is a good idea to assume VIA C7 Eden 
> 1.2GHz (Fanless) could give at least 30MB/s for encrypted data reading form 
> HDD and sending through ssh! (if makes difference, software raid1 is planned)
> 
> -
> Linux-crypto:  cryptography in and on the Linux system
> Archive:       http://mail.nl.linux.org/linux-crypto/
> 
> 

I don't know how C7 fast is but I have old C3 machine (VIA EPIA) running
as fanless firewall and did some tests on encrypted FS and SSH (sorry,
dm-crypt is already on /).

From core2 box through network via ssh to encrypted filesystem
(aes-cbc-essiv:sha256): 100% 2049MB   2.8MB/s   12:13

Reading file to /dev/null:
# dd if=some.file of=/dev/null bs=1M count=1024
1073741824 bytes (1.1 GB) copied, 203.296 s, 5.3 MB/s

kernel: 2.6.25-2-486 (debian kernel, -486 due missing long noops)

# cat /proc/cpuinfo
processor       : 0
vendor_id       : CentaurHauls
cpu family      : 6
model           : 9
model name      : VIA Nehemiah
stepping        : 8
cpu MHz         : 666.356
cache size      : 64 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr cx8 sep mtrr pge cmov pat mmx
fxsr sse rng rng_en ace ace_en
bogomips        : 1334.47
clflush size    : 32

# lsmod | grep padlock
padlock_aes            22848  2
crypto_blkcipher       17412  7 xts,padlock_aes,cbc,dm_crypt

RAID+SSH+ENCRYPTION and at least 30MB/s performance sounds like you need
a more faster CPU than single core 1.2GHz IMO

Hope it helps..
Z.


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