From owner-freebsd-current@FreeBSD.ORG Sun Dec 16 09:32:37 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D8A7316A503 for ; Sun, 16 Dec 2007 09:32:37 +0000 (UTC) (envelope-from darrenr@freebsd.org) Received: from out3.smtp.messagingengine.com (out3.smtp.messagingengine.com [66.111.4.27]) by mx1.freebsd.org (Postfix) with ESMTP id 9A16113C459 for ; Sun, 16 Dec 2007 09:32:37 +0000 (UTC) (envelope-from darrenr@freebsd.org) Received: from compute2.internal (compute2.internal [10.202.2.42]) by out1.messagingengine.com (Postfix) with ESMTP id 3CF287D9D5; Sun, 16 Dec 2007 04:32:37 -0500 (EST) Received: from heartbeat2.messagingengine.com ([10.202.2.161]) by compute2.internal (MEProxy); Sun, 16 Dec 2007 04:32:37 -0500 X-Sasl-enc: vWqyaU8wybUHNAQ03Ft0UQ4lByWcmtHEH1DeMSpCOla2 1197797556 Received: from [192.168.1.100] (dsl-202-45-110-141-static.VIC.netspace.net.au [202.45.110.141]) by mail.messagingengine.com (Postfix) with ESMTP id 116182A62D; Sun, 16 Dec 2007 04:32:35 -0500 (EST) Message-ID: <4764F0B2.1090306@freebsd.org> Date: Sun, 16 Dec 2007 20:32:34 +1100 From: Darren Reed Organization: FreeBSD User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 To: Rainer Duffner References: <47606C09.2070209@isc.org> <47609F0A.7010805@clearchain.com> <47609FE3.8040606@barafranca.com> <4760B444.1080604@clearchain.com> <06CAC7FC-DB58-441D-A6E0-76D1D8133393@tamu.edu> <86ir31xwlu.fsf@ds4.des.no> <1197637700.1250.35.camel@herring.rabson.org> <86abodxvbd.fsf@ds4.des.no> <47628934.6000007@ultra-secure.de> In-Reply-To: <47628934.6000007@ultra-secure.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: freebsd-current@freebsd.org Subject: Re: ZFS melting under postgres... X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: darrenr@freebsd.org List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Dec 2007 09:32:37 -0000 Rainer Duffner wrote: > Dag-Erling Smørgrav wrote: >> Note that you can also get disk drives with a certain amount of NAND >> flash built-in, but FreeBSD doesn't support that yet. >> >> > > They are intended for use with Vista - and have recently been found to > be marginally more effective than a placebo (for Vista-performance). > The speed-gains are barely distinguishable from measurement-errors... > So, if the drives would help ZFS, it would be a big irony. > > There are companies that manufacture "pure" SSDs (www.superssd.com, > www.soliddata.com) with battery-backup. > Unfortunately, the price-tag of these systems is still beyond reach for > normal customers. But prices for computer things only go in one direction: down. It will be interesting when they're more affordable and available. Darren