From owner-freebsd-hackers@FreeBSD.ORG Tue Aug 5 20:59:25 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 D290F106566B for ; Tue, 5 Aug 2008 20:59:25 +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 8AFED8FC18 for ; Tue, 5 Aug 2008 20:59:25 +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 m75KxJGP030760; Tue, 5 Aug 2008 13:59:19 -0700 (PDT) Received: (from dillon@localhost) by apollo.backplane.com (8.14.1/8.13.4/Submit) id m75KxJu8030759; Tue, 5 Aug 2008 13:59:19 -0700 (PDT) Date: Tue, 5 Aug 2008 13:59:19 -0700 (PDT) From: Matthew Dillon Message-Id: <200808052059.m75KxJu8030759@apollo.backplane.com> To: ticso@cicely.de References: <20080805123533.GA3262@rebelion.Sisis.de> <200808051506.m75F69d5039014@lurza.secnetix.de> <20080805190307.GY94193@cicely7.cicely.de> Cc: freebsd-hackers@freebsd.org, Matthias Apitz Subject: Re: restore of file system into USB key terrible slow X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Aug 2008 20:59:25 -0000 I've had good luck mounting UFS -o async on USB keys for the purposes of doing bulk operations. It still isn't the fastest thing in the world but it seems fast enough. Softupdates does a *lot* of tiny I/O's, try disabling it (I think mounting async disables softupdates automatically but I'm not sure). -Matt Matthew Dillon