From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 196E3138010 for ; Sun, 26 Aug 2012 20:53:09 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 70920E06BF; Sun, 26 Aug 2012 20:52:30 +0000 (UTC) Received: from mail.digimed.co.uk (82-69-83-178.dsl.in-addr.zen.co.uk [82.69.83.178]) by pigeon.gentoo.org (Postfix) with ESMTP id 81F8DE01F1 for ; Sun, 26 Aug 2012 20:50:01 +0000 (UTC) Received: from digimed.co.uk (yooden.digimed.co.uk [192.168.1.6]) by mail.digimed.co.uk (Postfix) with ESMTPSA id 3E3F780034 for ; Sun, 26 Aug 2012 21:50:00 +0100 (BST) Date: Sun, 26 Aug 2012 21:49:46 +0100 From: Neil Bothwick To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] SSD performance tweaking Message-ID: <20120826214946.2431199a@digimed.co.uk> In-Reply-To: <503A0B55.3030206@wonkology.org> References: <503602B8.3050507@wonkology.org> <20120824092548.GA13922@eisen.lan> <503A0B55.3030206@wonkology.org> Organization: Digital Media Production X-Mailer: Claws Mail 3.8.1cvs35 (GTK+ 2.24.11; x86_64-pc-linux-gnu) X-GPG-Fingerprint: 7260 0F33 97EC 2F1E 7667 FE37 BA6E 1A97 4375 1903 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/Gs/+MOBcrC5UClIG/oaNK8R"; protocol="application/pgp-signature" X-Archives-Salt: c375c427-04ac-4ad0-9d28-6fd6ad19beb1 X-Archives-Hash: c55a7ac71b0f6a7fcd758f48b3ffdaca --Sig_/Gs/+MOBcrC5UClIG/oaNK8R Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sun, 26 Aug 2012 13:41:09 +0200, Alex Schuster wrote: > Besides that, it's not so easy to do the alignment, at least when using=20 > LVM. I read that LVM adds 192K header information, so even if you align=20 > the partition start to an erasable block size of 512K, the actual=20 > content is not aligned. See [*] for information how to overcome this.=20 > That is, if you believe the alignment to erasable blocks is important,=20 > personally I do not know what to think now. It wouldn't hurt, so why > not apply it, but it seems like snake oil to me now. >=20 > Wonko >=20 > http://tytso.livejournal.com/2009/02/20/ I think that may be out of date. I read that but then found somewhere that LVM now uses MiB alignment. --=20 Neil Bothwick When there's a will, I want to be in it. --Sig_/Gs/+MOBcrC5UClIG/oaNK8R Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAlA6i/cACgkQum4al0N1GQOiJQCeP2OZbA0zGVqe67MxZDsCYj8y chQAn1rEy7OXgEvPRqkSd6YhP50SRweu =G2en -----END PGP SIGNATURE----- --Sig_/Gs/+MOBcrC5UClIG/oaNK8R--