incredibly slow ATA HD - HDIO_SET_DMA failed: Operation not permitted
Hannes Mayer
fedora at ancientcoins.biz
Fri May 21 05:42:33 UTC 2004
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)
> 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.
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