linux-kernel - Re: Kernel crypto API: cryptoperf performance measurement

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Message-ID: <53F5A1DB.8070400@iki.fi>
Date:	Thu, 21 Aug 2014 10:38:03 +0300
From:	Jussi Kivilinna <jussi.kivilinna@....fi>
To:	Milan Broz <gmazyland@...il.com>
CC:	Stephan Mueller <smueller@...onox.de>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: Kernel crypto API: cryptoperf performance measurement


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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