Hello,
On 2014-08-19 21:23, Stephan Mueller wrote:
> Am Dienstag, 19. August 2014, 10:17:36 schrieb Jussi Kivilinna:
>
> Hi Jussi,
>
>> Hello,
>>
>> On 2014-08-17 18:55, Stephan Mueller wrote:
>>> Hi,
>>>
>>> during playing around with the kernel crypto API, I implemented a
>>> performance measurement tool kit for the various kernel crypto API cipher
>>> types. The cryptoperf tool kit is provided in [1].
>>>
>>> Comments are welcome.
>>
>> Your results are quite slow compared to, for example "cryptsetup
>> benchmark", which uses kernel crypto from userspace.
>>
>> With Intel i5-2450M (turbo enabled), I get:
>>
>> # Algorithm | Key | Encryption | Decryption
>> aes-cbc 128b 524,0 MiB/s 11909,1 MiB/s
>> serpent-cbc 128b 60,9 MiB/s 219,4 MiB/s
>> twofish-cbc 128b 143,4 MiB/s 240,3 MiB/s
>> aes-cbc 256b 330,4 MiB/s 1242,8 MiB/s
>> serpent-cbc 256b 66,1 MiB/s 220,3 MiB/s
>> twofish-cbc 256b 143,5 MiB/s 221,8 MiB/s
>> aes-xts 256b 1268,7 MiB/s 4193,0 MiB/s
>> serpent-xts 256b 234,8 MiB/s 224,6 MiB/s
>> twofish-xts 256b 253,5 MiB/s 254,7 MiB/s
>> aes-xts 512b 2535,0 MiB/s 2945,0 MiB/s
>> serpent-xts 512b 274,2 MiB/s 242,3 MiB/s
>> twofish-xts 512b 250,0 MiB/s 245,8 MiB/s
>
> One to four GB per second for XTS? 12 GB per second for AES CBC? Somehow that
> does not sound right.
Agreed, those do not look correct... I wonder what happened there. On
new run, I got more sane results:
# Algorithm | Key | Encryption | Decryption
aes-cbc 128b 139,1 MiB/s 1713,6 MiB/s
serpent-cbc 128b 62,2 MiB/s 232,9 MiB/s
twofish-cbc 128b 116,3 MiB/s 243,7 MiB/s
aes-cbc 256b 375,1 MiB/s 1159,4 MiB/s
serpent-cbc 256b 62,1 MiB/s 214,9 MiB/s
twofish-cbc 256b 139,3 MiB/s 217,5 MiB/s
aes-xts 256b 1296,4 MiB/s 1272,5 MiB/s
serpent-xts 256b 283,3 MiB/s 275,6 MiB/s
twofish-xts 256b 294,8 MiB/s 299,3 MiB/s
aes-xts 512b 984,3 MiB/s 991,1 MiB/s
serpent-xts 512b 227,7 MiB/s 220,6 MiB/s
twofish-xts 512b 220,6 MiB/s 220,2 MiB/s
-Jussi
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