Re: Kernel crypto API: cryptoperf performance measurement

[Jussi Kivilinna]

On 2014-08-20 21:14, Milan Broz wrote:
> On 08/20/2014 03:25 PM, Jussi Kivilinna wrote:
>>> 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:
> 
> Which cryptsetup version are you using?
> 
> There was a bug in that test on fast machines (fixed in 1.6.3, I hope :)

I had version 1.6.1 at hand.

> 
> But anyway, it is not intended as rigorous speed test,
> it was intended for comparison of ciphers speed on particular machine.
>

True, but it's nice easy test when compared to parsing results from
tcrypt speed tests.

-Jussi

> Test basically tries to encrypt 1MB block (or multiple of this
> if machine is too fast). All it runs through kernel userspace crypto API
> interface.
> (Real FDE is always slower because it runs over 512bytes blocks.)
> 
> Milan
> 
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