Messages in this thread | | | Date | Thu, 9 Nov 2006 22:52:04 +0100 | From | "Luca Tettamanti" <> | Subject | Re: Abysmal PATA IDE performance |
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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.
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