Messages in this thread | | | Date | Thu, 09 Nov 2006 17:16:12 -0500 | From | Stephen Clark <> | Subject | Re: Abysmal PATA IDE performance |
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Luca Tettamanti wrote:
>On 11/9/06, Stephen Clark <Stephen.Clark@seclark.us> wrote: > > >>Luca Tettamanti wrote: >> >> >> >>>Stephen Clark <Stephen.Clark@seclark.us> 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). Datová propustnost k IDE: 100 MBps (Ultra DMA 5)
Steve
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