From owner-freebsd-questions@FreeBSD.ORG Mon Jun 11 19:30:15 2012 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 06EED106566B for ; Mon, 11 Jun 2012 19:30:15 +0000 (UTC) (envelope-from roberthuff@rcn.com) Received: from smtp02.lnh.mail.rcn.net (smtp02.lnh.mail.rcn.net [207.172.157.102]) by mx1.freebsd.org (Postfix) with ESMTP id B77878FC0C for ; Mon, 11 Jun 2012 19:30:14 +0000 (UTC) Received: from mr16.lnh.mail.rcn.net ([207.172.157.36]) by smtp02.lnh.mail.rcn.net with ESMTP; 11 Jun 2012 15:30:11 -0400 Received: from smtp04.lnh.mail.rcn.net (smtp04.lnh.mail.rcn.net [207.172.157.104]) by mr16.lnh.mail.rcn.net (MOS 4.3.4-GA) with ESMTP id BUM67647; Mon, 11 Jun 2012 15:30:11 -0400 Received: from 209-6-86-84.c3-0.smr-ubr2.sbo-smr.ma.cable.rcn.com (HELO jerusalem.litteratus.org.litteratus.org) ([209.6.86.84]) by smtp04.lnh.mail.rcn.net with ESMTP; 11 Jun 2012 15:30:10 -0400 From: Robert Huff MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <20438.18242.355961.455504@jerusalem.litteratus.org> Date: Mon, 11 Jun 2012 15:30:10 -0400 To: questions@freebsd.org In-Reply-To: References: <201206110559.q5B5x0Vu096317@jerusalem.litteratus.org> <20437.57631.776197.982243@jerusalem.litteratus.org> X-Mailer: VM 7.17 under 21.5 (beta28) "fuki" XEmacs Lucid X-Junkmail-Whitelist: YES (by domain whitelist at mr16.lnh.mail.rcn.net) Cc: Subject: Re: speed of "dump" X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Jun 2012 19:30:15 -0000 Warren Block writes: > > Another thread, which I seem to have lost, was talking about > > dump and sizing its cache. > > Per my promise, appended is the log of this morning's level 0 dump, > > using C=32. THe system is -CURRENT from March, using AMD Phemon II > > x4/3ghz and SATA 3gbit drives (one internal, one external.). > > > > DUMP: finished in 1746 seconds, throughput 19568 KBytes/sec > > Are you using -b64 ? That can make a serious throughput improvement > over smaller values. No. I'll give it a try. Thanks, Robert Huff