From owner-freebsd-mobile Sun Oct 20 23:49:59 2002 Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1FA5037B401 for ; Sun, 20 Oct 2002 23:49:58 -0700 (PDT) Received: from birch.ripe.net (birch.ripe.net [193.0.1.96]) by mx1.FreeBSD.org (Postfix) with ESMTP id 47EF643E3B for ; Sun, 20 Oct 2002 23:49:57 -0700 (PDT) (envelope-from marks@ripe.net) Received: from laptop.6bone.nl (cow.ripe.net [193.0.1.239]) by birch.ripe.net (8.12.5/8.11.6) with SMTP id g9L6ntnZ017713; Mon, 21 Oct 2002 08:49:55 +0200 Received: (nullmailer pid 611 invoked by uid 1000); Mon, 21 Oct 2002 05:28:19 -0000 Date: Mon, 21 Oct 2002 07:28:19 +0200 From: Mark Santcroos To: Randy Bush Cc: FreeBSD Laptoppers Subject: Re: hard drive Message-ID: <20021021052818.GA554@laptop.6bone.nl> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i X-Handles: MS6-6BONE, MS18417-RIPE X-RIPE-Spam-Status: NONE ; -1027 X-RIPE-Spam-Level: Sender: owner-freebsd-mobile@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Sun, Oct 20, 2002 at 12:26:25PM -0700, Randy Bush wrote: > for me, the bottleneck on laptops is the disk throughput. the hard > drives themselves are slow, and the bandwidth to them sucks. for > big makes etc., a 10GHz cpu would not improve throughput as much as > doubling the disk goodput. > > is anybody making laptoys with real disk i/o subsystems? Imho the gap between desktop and laptop is getting smaller. There are quite some laptops shipping with UDMA100 now. "dd if=/dev/ad0 of=/dev/null bs=4096" gives me 22 MB/s. I don't have a recent desktop so I don't know how this compares to recent desktop performance but I don't think it is bad. This combined with a 1800Mhz PIV and 256MB DDR memory makes it do buildworlds in 45 minutes. Mark -- Mark Santcroos RIPE Network Coordination Centre http://www.ripe.net/home/mark/ New Projects Group/TTM To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message