From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.saout.de ([127.0.0.1]) by localhost (mail.saout.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VV_ycKNX2LtO for ; Thu, 12 Jan 2012 19:19:49 +0100 (CET) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mail.saout.de (Postfix) with ESMTP for ; Thu, 12 Jan 2012 19:19:48 +0100 (CET) Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q0CIJmnk002060 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 12 Jan 2012 13:19:48 -0500 Received: from [10.36.6.232] (vpn1-6-232.ams2.redhat.com [10.36.6.232]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q0CIJlN1019776 for ; Thu, 12 Jan 2012 13:19:47 -0500 Message-ID: <4F0F2442.4060004@redhat.com> Date: Thu, 12 Jan 2012 19:19:46 +0100 From: Milan Broz MIME-Version: 1.0 References: <20120112150640.GA1918@fancy-poultry.org> <4F0EFAD3.3090908@redhat.com> <20120112162815.GA13265@tansi.org> In-Reply-To: <20120112162815.GA13265@tansi.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [dm-crypt] Twofish 3-way List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dm-crypt@saout.de On 01/12/2012 05:28 PM, Arno Wagner wrote: > Do I understand this right that this can only work if you > have independent disk accesses? For a single sector, the > mode would prevent any paralellization (unless you set > ECB, which is definitely not a good idea). Hm, right. But I think XTS can process blocks in one sector in parallel as well, but I just saw generic tcrypt tests (http://www.spinics.net/lists/linux-crypto/msg06351.html), not dmcrypt based numbers... Milan