Re: dm-crypt: Performance Regression 2.6.37 -> 2.6.38-rc8

From: Andi Kleen
Date: Fri Mar 11 2011 - 13:37:51 EST


On Fri, Mar 11, 2011 at 07:29:58PM +0100, Milan Broz wrote:
> On 03/11/2011 07:03 PM, Mario 'BitKoenig' Holbe wrote:
>
> >> You probably need to find some way
> >> to make pcrypt (parallel crypt layer) work for dmcrypt. That may
> >> actually give you more speedup too than your old hack because
> >> it can balance over more cores.
>
> dmcrypt is already using async crypto interface, it is ready
> for parallelization on this level.
>
> Perhaps the problem is that pcrypt is not yet implemented for needed
> algorithms?

It needs some glue according to Herbert. I forgot the details.

-Andi
--
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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