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 gfMaGWTr7a-N for ; Thu, 9 Aug 2012 05:18:01 +0200 (CEST) Received: from mail1.merlins.org (magic.merlins.org [209.81.13.136]) (using TLSv1.2 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.saout.de (Postfix) with ESMTPS for ; Thu, 9 Aug 2012 05:18:00 +0200 (CEST) Date: Wed, 8 Aug 2012 20:17:58 -0700 From: Marc MERLIN Message-ID: <20120809031758.GB12014@merlins.org> References: <5022864F.8030402@archlinux.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="7JfCtLOvnd9MIVvH" Content-Disposition: inline In-Reply-To: <5022864F.8030402@archlinux.org> Subject: Re: [dm-crypt] dm-crypt multithreaded yet? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Thomas =?iso-8859-1?Q?B=E4chler?= Cc: dm-crypt@saout.de --7JfCtLOvnd9MIVvH Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Am 08.08.2012 16:29, schrieb Brian J. Murrell: > I thought I knew the answer to this question (dm-crypt multithreaded > yet? no) but I had read in several places that dm-crypt had gained > multithreaded capabilities. I'm still skeptical though. I certainly > don't see it on Fedora 17's 3.3.4-5.fc17.x86_64 kernel. >=20 > Sadly, I don't have an AES-NI capable CPU, but I do have 4 (real, 8 with > HT enabled) cores and dm-crypting on my SSD reduces its performance down > from about 260MB/s (native) to 95MB/s. :-( I would like to think I > could get more performance out of it if more of the (usually available > anyway) CPU could be thrown at it. If that helps, my 500MB/s SSD is giving me 270MB/s when reading an encrypted file (i.e. going through the block and the filesystem layer) on my laptop: Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz Marc --=20 "A mouse is a device used to point at the xterm you want to type in" - A.S.= R. Microsoft is to operating systems .... .... what McDonalds is to gourmet coo= king Home page: http://marc.merlins.org/ =20 --7JfCtLOvnd9MIVvH Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQCVAwUBUCMr5n4xUKZ2O+kBAQKnsQQAiVe5Mjsr46vja/UcVgp0H23QY730QCkX IDsiyT+nbB1oto7lafIK2CKZuwZTVaMaWCNBvu6FHU55xWPITGCdu5kBjmv5+fj4 hjceUrzY0dr8nNX7KNBe0IOM1y3xCWplRKeh0/LA9b7fQtcX05z0+0dkC4JFM+Nz ek89WJobQCg= =3br5 -----END PGP SIGNATURE----- --7JfCtLOvnd9MIVvH--