From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1RESbK-00026W-6x for garchives@archives.gentoo.org; Thu, 13 Oct 2011 21:14:02 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 6C08C21C0F5; Thu, 13 Oct 2011 21:13:41 +0000 (UTC) Received: from postler.lichtfels.com (postler.lichtfels.com [78.46.92.195]) by pigeon.gentoo.org (Postfix) with ESMTP id 1A1B621C0A0 for ; Thu, 13 Oct 2011 21:12:21 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by postler.lichtfels.com (Postfix) with ESMTP id 249CE14B41 for ; Thu, 13 Oct 2011 23:16:37 +0200 (CEST) Received: from postler.lichtfels.com ([127.0.0.1]) by localhost (postler.lichtfels.com [127.0.0.1]) (amavisd-maia, port 10024) with LMTP id 16906-04 for ; Thu, 13 Oct 2011 23:16:36 +0200 (CEST) Received: from hiro.oops.intern (mail.oops.co.at [213.129.238.225]) by postler.lichtfels.com (Postfix) with ESMTPA id 03D1F14B40 for ; Thu, 13 Oct 2011 23:16:35 +0200 (CEST) Message-ID: <4E975432.2060501@xunil.at> Date: Thu, 13 Oct 2011 23:12:18 +0200 From: "Stefan G. Weichinger" Organization: oops! User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20111003 Thunderbird/7.0.1 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 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] SSDs, ext4, fstrim, discard ... References: <4E94AD7F.7050405@xunil.at> <20111011230541.436ea1a4@digimed.co.uk> <4E94C292.2010601@xunil.at> In-Reply-To: <4E94C292.2010601@xunil.at> X-Enigmail-Version: 1.4a1pre Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.2a X-Archives-Salt: X-Archives-Hash: 0ec10b181b777bde8b43f0b624e51189 Am 12.10.2011 00:26, schrieb Stefan G. Weichinger: >> What is the benefit of running fstrim manually over mounting with >> discard? > > discard seems to slow down the fs by trimming all the time. > I only report what I read. No tests done so far. Shouldn't "discard" be set to make TRIM work anyway, even with fstrim? man mount says for "discard": "Controls whether ext4 should issue discard/TRIM commands to the underlying block device when blocks are freed." Sounds like TRIM-commands wouldn't get through to the SSD when "discard" is not set. Still wondering. Stefan