Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161865AbWKIWQQ (ORCPT ); Thu, 9 Nov 2006 17:16:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161866AbWKIWQP (ORCPT ); Thu, 9 Nov 2006 17:16:15 -0500 Received: from smtpout05-04.prod.mesa1.secureserver.net ([64.202.165.221]:17075 "HELO smtpout05-04.prod.mesa1.secureserver.net") by vger.kernel.org with SMTP id S1161865AbWKIWQP (ORCPT ); Thu, 9 Nov 2006 17:16:15 -0500 Message-ID: <4553A8AC.2090805@seclark.us> Date: Thu, 09 Nov 2006 17:16:12 -0500 From: Stephen Clark Reply-To: Stephen.Clark@seclark.us User-Agent: Mozilla/5.0 (X11; U; Linux 2.2.16-22smp i686; en-US; m18) Gecko/20010110 Netscape6/6.5 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Luca Tettamanti CC: linux-kernel@vger.kernel.org Subject: Re: Abysmal PATA IDE performance References: <20061109202319.GA13940@dreamland.darkstar.lan> <4553903B.4010908@seclark.us> <68676e00611091352l16663ff9o86f663a28190c0dc@mail.gmail.com> In-Reply-To: <68676e00611091352l16663ff9o86f663a28190c0dc@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2785 Lines: 91 Luca Tettamanti wrote: >On 11/9/06, Stephen Clark wrote: > > >>Luca Tettamanti wrote: >> >> >> >>>Stephen Clark ha scritto: >>> >>> >>> >>> >>>>Looking at the dmesg output I am a little confused, see comments below: >>>>partial dmesg output follows: >>>> >>>>SCSI subsystem initialized >>>>libata version 2.00 loaded. >>>>ata_piix 0000:00:1f.2: version 2.00 >>>>ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ] >>>>ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 233 >>>>PCI: Setting latency timer of device 0000:00:1f.2 to 64 >>>>ata1: SATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xFFA0 irq 14 >>>>scsi0 : ata_piix >>>>Synaptics Touchpad, model: 1, fw: 6.1, id: 0xa3a0b3, caps: 0xa04713/0x10008 >>>>input: SynPS/2 Synaptics TouchPad as /class/input/input1 >>>>ATA: abnormal status 0x7F on port 0x1F7 >>>>ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xFFA8 irq 15 >>>>scsi1 : ata_piix >>>>ata2.00: ATA-6, max UDMA/100, 117210240 sectors: LBA48 >>>>ata2.00: ata2: dev 0 multi count 16 >>>>usb 2-2: new low speed USB device using uhci_hcd and address 3 >>>>ata2.01: ATAPI, max UDMA/33 >>>>ata2.00: configured for UDMA/33 <==== why isn't this 66 or 100 ? >>>>===============**** >>>> >>>> >>>> >>>> >>>This is your optical (CD/DVD) unit; I doubt that you can saturate that >>>link, even if your drive can do a sustained 16x transfer with a DVD it >>>will use only 21MBps. Your HD is using UDMA/100. >>> >>> >>aren't the ata2.00: messages referring to my hard drive and the >>ata2.01 messages referring to my optical drive? >> >>ata2.00: ATA-6, max UDMA/100, 117210240 sectors: LBA48 >>ata2.00: ata2: dev 0 multi count 16 >> >>ata2.01: ATAPI, max UDMA/33 >> >>ata2.00: configured for UDMA/33 <==== why isn't this 66 or 100 ? >> >> > >You're right, I misparsed your log. Probably Arjan is right about the wiring. > >Luca >- >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >the body of a message to majordomo@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html >Please read the FAQ at http://www.tux.org/lkml/ > > > Hi Luca, The specs for the laptop say it supports ide 100MBps (Ultra DMA 5). Datov? propustnost k IDE: 100 MBps (Ultra DMA 5) Steve -- "They that give up essential liberty to obtain temporary safety, deserve neither liberty nor safety." (Ben Franklin) "The course of history shows that as a government grows, liberty decreases." (Thomas Jefferson) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/