From owner-freebsd-arch@FreeBSD.ORG Tue Apr 1 20:15:12 2008 Return-Path: Delivered-To: arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5108F106564A; Tue, 1 Apr 2008 20:15:12 +0000 (UTC) (envelope-from dillon@apollo.backplane.com) Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by mx1.freebsd.org (Postfix) with ESMTP id 29A028FC3D; Tue, 1 Apr 2008 20:15:12 +0000 (UTC) (envelope-from dillon@apollo.backplane.com) Received: from apollo.backplane.com (localhost [127.0.0.1]) by apollo.backplane.com (8.14.1/8.14.1) with ESMTP id m31KEv0e041050; Tue, 1 Apr 2008 13:14:58 -0700 (PDT) Received: (from dillon@localhost) by apollo.backplane.com (8.14.1/8.13.4/Submit) id m31KEvTJ041049; Tue, 1 Apr 2008 13:14:57 -0700 (PDT) Date: Tue, 1 Apr 2008 13:14:57 -0700 (PDT) From: Matthew Dillon Message-Id: <200804012014.m31KEvTJ041049@apollo.backplane.com> To: "Martin Fouts" References: <20080330231544.A96475@localhost> <200803310135.m2V1ZpiN018354@apollo.backplane.com> <200803312125.29325.qpadla@gmail.com> <200803311915.m2VJFSoR027593@apollo.backplane.com> <200803312006.m2VK6Aom028133@apollo.backplane.com> <200803312254.m2VMsPqZ029549@apollo.backplane.com> <200804011733.m31HXF6e039649@apollo.backplane.com> Cc: Christopher Arnold , arch@freebsd.org, qpadla@gmail.com, freebsd-arch@freebsd.org Subject: RE: Flash disks and FFS layout heuristics X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Apr 2008 20:15:12 -0000 :You've done the same thing in this email that you did in your earlier :comparison. You've found a trivial subset of the problem and then make :the generalization that solving that subset shows that the solution to :the problem is trivial. You know as well as I do that embedded projects are ALWAYS a trivial subset of something. Until you get to the level of sophistication of an iPhone. You only need to solve the subset of the problem that the embedded project covers. Most general problem sets become trivialized when used in degenerate environments. This is not a description of a trivialized solution to the problem set being generalized up, it is a description of the generalized solution to the problem set being applied to a degenerate application which trivializes many aspects of the general solution. My interest is in large scale systems, OF COURSE I'm approaching the problem from the point of view of large scale systems and not small scale systems. Don't be silly. -Matt Matthew Dillon