From owner-freebsd-hackers@FreeBSD.ORG Tue Jun 24 15:15:40 2008 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 77535106566C for ; Tue, 24 Jun 2008 15:15:40 +0000 (UTC) (envelope-from gary.jennejohn@freenet.de) Received: from mout3.freenet.de (mout3.freenet.de [IPv6:2001:748:100:40::2:5]) by mx1.freebsd.org (Postfix) with ESMTP id 18DF78FC1D for ; Tue, 24 Jun 2008 15:15:39 +0000 (UTC) (envelope-from gary.jennejohn@freenet.de) Received: from [195.4.92.17] (helo=7.mx.freenet.de) by mout3.freenet.de with esmtpa (ID gary.jennejohn@freenet.de) (port 25) (Exim 4.69 #19) id 1KBAF7-00027U-Vz; Tue, 24 Jun 2008 17:15:37 +0200 Received: from mbe7a.m.pppool.de ([89.49.190.122]:11276 helo=peedub.jennejohn.org) by 7.mx.freenet.de with esmtpa (ID gary.jennejohn@freenet.de) (port 25) (Exim 4.69 #12) id 1KBAF7-00035t-O5; Tue, 24 Jun 2008 17:15:37 +0200 Date: Tue, 24 Jun 2008 17:15:36 +0200 From: Gary Jennejohn To: freebsd-hackers@freebsd.org Message-ID: <20080624171536.24ca2d28@peedub.jennejohn.org> In-Reply-To: <20080624132412.GA77678@eos.sc1.parodius.com> References: <20080624131150.GA21185@rebelion.Sisis.de> <20080624132412.GA77678@eos.sc1.parodius.com> X-Mailer: Claws Mail 3.4.0 (GTK+ 2.10.14; amd64-portbld-freebsd8.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Matthias Apitz Subject: Re: eeePC 900 with SSD && reducing writes X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: gary.jennejohn@freenet.de List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Jun 2008 15:15:40 -0000 On Tue, 24 Jun 2008 06:24:12 -0700 Jeremy Chadwick wrote: > On Tue, Jun 24, 2008 at 03:11:50PM +0200, Matthias Apitz wrote: > > Hello, > > > > I have installed FreeBSD 7.0R on that eeePC 900 and because of the > > limited life time of the SSD (see > > http://en.wikipedia.org/wiki/Wear_levelling ) > > I disabled some logging stuff which I don't need on that tiny laptop, > > ... > > any other ideas how to reduces unnecessary often-writes? > > Why bother? http://www.storagesearch.com/ssdmyths-endurance.html > I've also seen test results in c't magazine where they did millions of writes to the same physical sector and never saw any errors. The manufacturers have really good internal wear leveling algorithms which are totally transparent to the user. --- Gary Jennejohn