Re: incredibly slow ATA HD - HDIO_SET_DMA failed: Operation not permitted

Hi all!

Well, I didn't solve the problem yet. Still extremely slow controller...

Today I tried the controller+HD on windoze - it performs quite fast as
any other HD in the machine.

BTW, the HD is running in UDMA5.

Any hints on getting normal disk-speed on Fedora2 greatly appreciated!

Thanks a lot,
Hannes.

Hannes Mayer wrote:
> Hi all!
>
> I tried some options with hdparm - now it's a bit faster, but still
> quite slow:
>
> # hdparm -c1 /dev/hde
>
> /dev/hde:
>  setting 32-bit IO_support flag to 1
>  IO_support   =  1 (32-bit)
>
> # hdparm -t /dev/hde
>
> /dev/hde:
>  Timing buffered disk reads:   12 MB in  3.43 seconds =   3.50 MB/sec
>
> Is there anything else to do to improve performance ?
>
> Thanks a lot,
> Hannes.
>
>
> Hannes Mayer wrote:
>  > Hi all!
>  >
>  > My fedora HD on an extra ATA controller is very slow. Only about
> 2MB/s(!):
>  >
>  > # hdparm -t /dev/hde
>  >
>  > /dev/hde:
>  >  Timing buffered disk reads:    6 MB in  3.02 seconds =   1.98 MB/sec
>  >
>  > I assume the problem is that DMA is disabled ?
>  >
>  > # hdparm /dev/hde
>  >
>  > /dev/hde:
>  >  multcount    = 16 (on)
>  >  IO_support   =  0 (default 16-bit)
>  >  unmaskirq    =  0 (off)
>  >  using_dma    =  0 (off)
>  >  keepsettings =  0 (off)
>  >  readonly     =  0 (off)
>  >  readahead    = 256 (on)
>  >  geometry     = 58246/16/63, sectors = 58711968, start = 0
>  >
>  > But when I try to enable DMA I get this:
>  >
>  > # hdparm -d1 /dev/hde
>  >
>  > /dev/hde:
>  >  setting using_dma to 1 (on)fedora-list@xxxxxxxxxx
>  >  HDIO_SET_DMA failed: Operation not permitted
>  >  using_dma    =  0 (off)
>  >
>  > # lspic -v
>  > [...]
>  > 02:04.0 Unknown mass storage controller: Integrated Technology Express,
>  > Inc. IT/ITE8212 Dual channel ATA RAID controller (PCI version seems to
>  > be IT8212, embedded seems (rev 11)
>  >         Subsystem: Integrated Technology Express, Inc.: Unknown
> device 0001
>  >         Flags: bus master, 66Mhz, medium devsel, latency 0, IRQ 11
>  >         I/O ports at a800
>  >         I/O ports at ac00 [size=4]
>  >         I/O ports at b000 [size=8]
>  >         I/O ports at b400 [size=4]
>  >         I/O ports at b800 [size=16]
>  >         Capabilities: [80] Power Management version 2
>  >
>  > On google I read that drivers for the chipset are missing...
>  > Since I'm recompiling the kernel anyway to get NTFS support, I'd
>  > appreciate any hints what to include in the kernel.
>  >
>  > Thanks a lot,
>  > Hannes.
>
>
>