From owner-freebsd-questions@FreeBSD.ORG Thu May 31 17:00:40 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 337FA106566C for ; Thu, 31 May 2012 17:00:40 +0000 (UTC) (envelope-from vas@mpeks.tomsk.su) Received: from relay2.tomsk.ru (relay2.tomsk.ru [212.73.124.8]) by mx1.freebsd.org (Postfix) with ESMTP id 732618FC16 for ; Thu, 31 May 2012 17:00:39 +0000 (UTC) X-Virus-Scanned: by clamd daemon 0.93.1 for FreeBSD at relay2.tomsk.ru Received: from admin.sibptus.tomsk.ru (account sudakov@sibptus.tomsk.ru [212.73.125.240] verified) by relay2.tomsk.ru (CommuniGate Pro SMTP 5.1.16) with ESMTPSA id 26731857 for freebsd-questions@freebsd.org; Fri, 01 Jun 2012 00:00:37 +0700 Received: from admin.sibptus.tomsk.ru (sudakov@localhost [127.0.0.1]) by admin.sibptus.tomsk.ru (8.14.5/8.14.5) with ESMTP id q4VH0a05029664 for ; Fri, 1 Jun 2012 00:00:36 +0700 (NOVT) (envelope-from vas@mpeks.tomsk.su) Received: (from sudakov@localhost) by admin.sibptus.tomsk.ru (8.14.5/8.14.5/Submit) id q4VH0ahv029663 for freebsd-questions@freebsd.org; Fri, 1 Jun 2012 00:00:36 +0700 (NOVT) (envelope-from vas@mpeks.tomsk.su) X-Authentication-Warning: admin.sibptus.tomsk.ru: sudakov set sender to vas@mpeks.tomsk.su using -f Date: Fri, 1 Jun 2012 00:00:36 +0700 From: Victor Sudakov To: freebsd-questions@freebsd.org Message-ID: <20120531170035.GA29456@admin.sibptus.tomsk.ru> References: <20120531025206.GA11699@admin.sibptus.tomsk.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: AO "Svyaztransneft", SibPTUS X-PGP-Key: http://www.livejournal.com/pubkey.bml?user=victor_sudakov X-PGP-Fingerprint: 10E3 1171 1273 E007 C2E9 3532 0DA4 F259 9B5E C634 User-Agent: Mutt/1.5.21 (2010-09-15) Subject: Re: 9.0 on SSD X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 May 2012 17:00:40 -0000 Warren Block wrote: > > > > I have installed 9.0-RELEASE on a SSD drive with the following > > tweaking so far: > > > > 1. tmpmfs="YES" (WRKDIRPREFIX etc will go there too). > > > > 2. mount -o noatime > > > > 3. tunefs -t enable > > > > I have not done any tricky partition alignment, do I really need to? Is > > anything else advisable? > > If it's not aligned, there can be a pretty significant performance > drop. Please show the output of 'gpart show' on that drive if it's GPT > (gpart show ada0) or drive and slice if it's MBR/bsdlabel (gpart show > ada0 && gpart show ada0s1). It was created by the "Auto" option of the new FreeBSD installer: [sudakov@vas ~] gpart show ada0 => 34 117231341 ada0 GPT (55G) 34 128 1 freebsd-boot (64k) 162 111148928 2 freebsd-ufs (53G) 111149090 5861376 3 freebsd-swap (2.8G) 117010466 220909 - free - (107M) [sudakov@vas ~] > > > There is one thing that worries me, why is TRIM not shown as enabled in > > camcontrol output? > > > > [root@vas ~] tunefs -p /dev/ada0p2 | & grep -i trim > > tunefs: trim: (-t) enabled > > [root@vas ~] camcontrol identify ada0 | egrep '^Fea|TRIM' > > Feature Support Enabled Value Vendor > > data set management (TRIM) yes > > [root@vas ~] > > I think that no value there means it cannot be enabled or disabled; it's > always on. Oh. Thanks. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN sip:sudakov@sibptus.tomsk.ru