From owner-freebsd-fs@FreeBSD.ORG Fri Feb 17 20:19:36 2012 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 02D561065675; Fri, 17 Feb 2012 20:19:36 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-ww0-f50.google.com (mail-ww0-f50.google.com [74.125.82.50]) by mx1.freebsd.org (Postfix) with ESMTP id 582018FC12; Fri, 17 Feb 2012 20:19:34 +0000 (UTC) Received: by wgbdq11 with SMTP id dq11so3073647wgb.31 for ; Fri, 17 Feb 2012 12:19:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=gtrjwtZmULZ/eVVzbC/IIznucrici/dD1Jl03nNEmJc=; b=idEIn3ag8FLZpgPU35KjNMpFgOlDexETm6IV4wukDP2j2Utq5IkKUWUPOKwF/IkKtS plB6UFG7v7UD1yFpMAr8PjfZOwHoRZRAp0eS9SiVCrIFFIZbacRbuYlZAtoDQNv32blW fVM5KKyaJP1Y/xLPpNCNdnveoLqczxsBYuBXE= MIME-Version: 1.0 Received: by 10.216.134.157 with SMTP id s29mr3894267wei.1.1329508649004; Fri, 17 Feb 2012 11:57:29 -0800 (PST) Received: by 10.223.62.70 with HTTP; Fri, 17 Feb 2012 11:57:28 -0800 (PST) In-Reply-To: <20120217193031.GA34283@freebsd.org> References: <20120217141607.GA63659@freebsd.org> <4F3E9A14.3070605@freebsd.org> <20120217190921.GA26568@freebsd.org> <4F3EA75C.6070407@freebsd.org> <20120217193031.GA34283@freebsd.org> Date: Fri, 17 Feb 2012 13:57:28 -0600 Message-ID: From: Adam Vande More To: Alexander Best Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-fs@freebsd.org Subject: Re: freebsd-swap on ssd X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Feb 2012 20:19:36 -0000 On Fri, Feb 17, 2012 at 1:30 PM, Alexander Best wrote: > ahh is see. i wasn't aware of that. so in theory doing > > while true; do dd if=/dev/zero bs=4096 of=/dev/ssd count=1; done > > will not overwrite the first sector continuously, but the ssd controller > will > make sure the writes are being sprinkled all over the actual ssd? > Sounds like you are seeking info on this process: http://en.wikipedia.org/wiki/Wear_leveling -- Adam Vande More