linux-kernel - Re: [PATCH -mm crypto] AES: remove crypto_fl_tab and replace crypto_il_tab with isb

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Message-ID: <20080325233356.GA2577@Chamillionaire.breakpoint.cc>
Date:	Wed, 26 Mar 2008 00:33:56 +0100
From:	Sebastian Siewior <linux-crypto@...breakpoint.cc>
To:	"Huang, Ying" <ying.huang@...el.com>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	"Adam J. Richter" <adam@...drasil.com>,
	Alexander Kjeldaas <astor@...t.no>,
	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: Re: [PATCH -mm crypto] AES: remove crypto_fl_tab and replace
	crypto_il_tab with isb_tab

* Huang, Ying | 2008-03-11 12:42:56 [+0800]:

>These changes reduce the encryption cache footprint to 50% and
>decryption cache footprint to 53.1%. The code size is increased
>slightly. On my Intel CORE micro-architecture CPU, there is almost no
>performance penalty.
According to the tcrypt numbers you've posted it is getting "slightly"
slower on encryption/decryption of 64+ bytes. How did you measure your
"almost no performance penalty"?

 Sebastian
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