Mike Tancsa a écrit :
At 11:37 AM 10/12/2006, Oliver Fromme wrote:
Matthieu Michaud wrote:
> I rent a small server based on a VIA C7 on which I installed a
> 6.2-PRERELEASE as of today (see dmesg and kernconf attached). It runs
> fairly well but I wonder if it couldn't be faster.
>
> According to padlock(4) man page, crypto hardware support is available
> by adding padlock, crypto and cryptodev kernel options. I compiled
it as
> modules. I haven't noticed difference between 'openssl speed' and
> 'openssl speed -engine padlock'. I attached results.
I don't know if the openssl command really uses the padlock
engine. I doubt it.
It will if you tell it to, but remember, its only AES that it will speed
up. You wont see a difference in things like 3des etc.
Just do the tests for aes
Try something like
openssl speed -evp aes-256-ecb -engine padlock
vs
openssl speed -evp aes-256-ecb -engine dynamic
On a CPU: VIA C3 Nehemiah+RNG+AES (796.77-MHz 686-class CPU)
I get
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192
bytes
aes-256-ecb 37610.62k 142398.18k 389573.81k 678504.21k
868056.96k
aes-256-ecb 4923.20k 5143.88k 5222.51k 5256.46k
5276.31k
For comparison, here is the same test on a Celeron 2.6 and an AMD 3800
aes-256-ecb 39727.25k 41359.33k 42596.01k 42919.64k
42940.31k
aes-256-ecb 27408.65k 32035.54k 32623.81k 32767.08k
32822.06k
ok, now i see a difference. on my C7 running a recent 6.2 :
aes-128-ecb 140283.57k 509427.16k 1340639.69k 2158707.04k 2626033.49k
aes-128-ecb 16956.08k 17668.87k 17894.31k 17951.39k 17967.98k
it might explain scp speedup.
thanx for pointing it to me :)
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