Ubuntu 8.04, bad response time when HDD active

[Tyler Aviss]

Maybe it's using one of the Experimental PATA kernel drivers?

On Wed, Jun 25, 2008 at 11:49 AM, Madison Kelly <linux-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org> wrote:
> Lennart Sorensen wrote:
>>
>> On Wed, Jun 25, 2008 at 11:18:22AM -0400, Madison Kelly wrote:
>>>
>>> Update;
>>>
>>> It said DMA was in use with 'hdparm -I', but 'hdparm -d' shows otherwise:
>>>
>>> root at akane:/home/digimer# hdparm -d /dev/hda
>>>
>>> /dev/hda:
>>>  using_dma     =  0 (off)
>>> root at akane:/home/digimer# hdparm -d 1 /dev/hda
>>>
>>> /dev/hda:
>>>  setting using_dma to 1 (on)
>>>  HDIO_SET_DMA failed: Operation not permitted
>>>  using_dma     =  0 (off)
>>>
>>> lolwut?!
>>
>> Probably means for some reason you are now using ide-generic rather than
>> the native driver for your IDE controller (which would explain it
>> dropping back to /dev/hda).  Figure out why it isn't loading the correct
>> driver in the initrd, or why it isn't recognizing your controller (maybe
>> dmesg has some hint).
>>
>
> D'oh, forgot to check dmesg...
>
> This is a bit cryptic to me, but maybe a TLUG'er has some insight? Are the
> complaints here a clue or normal?
>
> ...
> [    9.212243] PCI: Unable to reserve I/O region #1:8 at 1f0 for device
> 0000:00:1f.1
> [    9.212247] ata_piix 0000:00:1f.1: failed to request/iomap BARs for port
> 0 (errno=-16)
> [    9.212261] PCI: Setting latency timer of device 0000:00:1f.1 to 64
> [    9.213013] scsi0 : ata_piix
> [    9.213674] scsi1 : ata_piix
> [    9.214697] ata1: DUMMY
> [    9.214701] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x1868 irq
> 15
> [    9.342815] hda: ST960822A, ATA DISK drive
> [    9.342913] ide1: I/O resource 0x376-0x376 not free.
> [    9.342917] ide1: ports already in use, skipping probe
> [    9.342949] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> [    9.515383] hda: max request size: 128KiB
> [    9.515961] hda: 117210240 sectors (60011 MB) w/8192KiB Cache,
> CHS=65535/16/63
> [    9.516122] hda: cache flushes supported
> [    9.516162]  hda: hda1 hda2
> ...
>
> Madi
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-- 
Tyler Aviss
Systems Support
LPIC/LPIC-2
(647) 302-0942
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