From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 8 Aug 2002 04:17:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 8 Aug 2002 04:17:28 -0400 Received: from willy.net1.nerim.net ([62.212.114.60]:7430 "EHLO www.home.local") by vger.kernel.org with ESMTP id ; Thu, 8 Aug 2002 04:17:27 -0400 Date: Thu, 8 Aug 2002 10:20:59 +0200 From: Willy Tarreau To: Bruce M Beach Cc: linux-kernel@vger.kernel.org Subject: Re: IDE numbers Message-ID: <20020808082059.GD943@alpha.home.local> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 08, 2002 at 12:19:22PM +0000, Bruce M Beach wrote: > time cp TEMP.tar ... hda3->hda1 49m18.320s ~ 3,339,200.9 bytes/s slow because it's the same disk, so the head constantly move back and forth between hda1 and hda3. You are limited by seek time. > time cp TEMP.tar ... hdc1->sda1 51m16.493s are you sure it was "hdc1" ? I can't see it in your dmesg below. > time cp TEMP.tar ... sda1->scb1 5m41.388s ~ 28,936,063 bytes/s seems correct to me, I had the same numbers with 7200 RPM seagate drives too. Regards, Willy > PCI_IDE: not 100% native mode: will probe irqs later > ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:DMA > ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:pio, hdd:pio > hda: ST360021A, ATA DISK drive > hdb: 16X10, ATAPI CD/DVD-ROM drive > ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 > hda: 117231408 sectors (60022 MB) w/2048KiB Cache, CHS=7297/255/63 > Partition check: > /dev/ide/host0/bus0/target0/lun0: p1 p2 p3