From owner-freebsd-questions@FreeBSD.ORG Sun Nov 15 23:30:51 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BAD1F106566C for ; Sun, 15 Nov 2009 23:30:51 +0000 (UTC) (envelope-from cyberleo@cyberleo.net) Received: from mtumishi.cyberleo.net (mtumishi.cyberleo.net [69.72.129.14]) by mx1.freebsd.org (Postfix) with ESMTP id 8FCA58FC15 for ; Sun, 15 Nov 2009 23:30:51 +0000 (UTC) Received: from [172.16.44.14] (h-74-2-96-2.chcgilgm.static.covad.net [74.2.96.2]) by mtumishi.cyberleo.net (Postfix) with ESMTPSA id 2C2AD24770; Sun, 15 Nov 2009 18:32:30 -0500 (EST) Message-ID: <4B008F27.4030903@cyberleo.net> Date: Sun, 15 Nov 2009 17:30:47 -0600 From: CyberLeo Kitsana User-Agent: Thunderbird 2.0.0.23 (X11/20091109) MIME-Version: 1.0 To: James Phillips References: <393905.86009.qm@web65508.mail.ac4.yahoo.com> In-Reply-To: <393905.86009.qm@web65508.mail.ac4.yahoo.com> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org Subject: Re: freebsd-questions Digest, Vol 284, Issue 11 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: Sun, 15 Nov 2009 23:30:51 -0000 James Phillips wrote: >> Date: Sat, 14 Nov 2009 20:29:59 -0600 >> From: CyberLeo Kitsana >> Subject: [FreeBSD Questions] Filesystem image as root >> >> The single IDE connector is accessible via the legacy ISA >> ports, and is >> thus limited to PIO modes (about 1.6MB/sec max, even with >> an actual hard >> drive instead of a CF card). > > You are off by an order of magnitude (base 2 or 10): > Pio mode 0 is ~3.3 MB/s > Pio mode 4 is ~16.7 MB/s > > http://www.pcguide.com/ref/hdd/if/ide/modesPIO-c.html > > You can probably set PIO mode 4 for with: > # atacontrol mode ad0 PIO4 If only that were true in this case. (85eef1f3)[root@ss4200 ~]# atacontrol mode ad0 PIO4 current mode = PIO2 (85eef1f3)[root@ss4200 ~]# atacontrol mode ad0 PIO4 current mode = PIO2 (85eef1f3)[root@ss4200 ~]# dd if=/dev/ad0 of=/dev/null bs=4096 count=4096 4096+0 records in 4096+0 records out 16777216 bytes transferred in 10.111748 secs (1659181 bytes/sec) Nothing I've tried seems to boost the throughput, hence the desire to use a compressed cached filesystem image. Thanks for the suggestions, though! -- Fuzzy love, -CyberLeo Technical Administrator CyberLeo.Net Webhosting http://www.CyberLeo.Net Furry Peace! - http://wwww.fur.com/peace/