How to use hdparm on Feisty

[Rashkae]

Nils wrote:
> Hi all
> 
> I have a box with feisty setup and it runs very slow. I'm not sure,
> but I think it's a problem with the disk:
> 
> /dev/sda:
>  IO_support   =  0 (default 16-bit)
>  readonly     =  0 (off)
>  readahead    = 256 (on)
>  geometry     = 9964/255/63, sectors = 160086528, start = 0
> 
> When I try to enable dma or 32bit:
> 
> root at host:~# hdparm -d 1 -c 1 /dev/sda
> 
> /dev/sda:
>  setting 32-bit IO_support flag to 1
>  HDIO_SET_32BIT failed: Invalid argument
>  setting using_dma to 1 (on)
>  HDIO_SET_DMA failed: Inappropriate ioctl for device
>  IO_support   =  0 (default 16-bit)
> 
> 
> There must be a way to do this, but i'm not sure how. Since in Feisty
> all disks are used with the scsi driver, there is probably another way
> to enable dma, but I could not find it so far.
> 

I'm not sure myself,  I think the new libata driver should just take 
care of DMA on it's own.

In any case, why don't you test your hard drive performance?

hdparm -tT /dev/sda

repeat that a couple times.  Assuming you have a modern hard drive, if 
all is well, you should seem performance numbers over 40MB/s