linux-kernel - Re: [PATCH] crypto: twofish - add x86

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Message-ID: <20120828162523.GA16804@x1.osrc.amd.com>
Date:	Tue, 28 Aug 2012 18:25:23 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Jussi Kivilinna <jussi.kivilinna@...et.fi>
Cc:	Johannes Goetzfried 
	<Johannes.Goetzfried@...ormatik.stud.uni-erlangen.de>,
	linux-crypto@...r.kernel.org,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Tilo MÃ¼ller 
	<tilo.mueller@...ormatik.uni-erlangen.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto: twofish - add x86_64/avx assembler implementation

On Tue, Aug 28, 2012 at 12:17:43PM +0300, Jussi Kivilinna wrote:
> With this patch twofish-avx is faster than twofish-3way for 256, 1k
> and 8k tests.
> 
> size    old-vs-new      new-vs-3way     old-vs-3way
>         ecb-enc ecb-dec ecb-enc ecb-dec ecb-enc ecb-dec
> 256     1.10x   1.11x   1.01x   1.01x   0.92x   0.91x
> 1k      1.11x   1.12x   1.08x   1.07x   0.97x   0.96x
> 8k      1.11x   1.13x   1.10x   1.08x   0.99x   0.97x

Not bad, that's 10ish percent improvement, after all.

Thanks.

-- 
Regards/Gruss,
Boris.
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