On Jan 7, 2008 8:37 PM, Dale <[EMAIL PROTECTED]> wrote:
> William Kenworthy wrote:
> > Check the options for your chipset in the kernel - look at device
> > drivers and ata/... devices. Looks like its just defaulted to the
> > minimum as it hasnt seen what chipset you are using.
> >
> > Also consider moving to libata - seems better where I have tried it.
> >
> > BillK
> >
> >
> > On Tue, 2008-01-08 at 02:26 +0200, Wayn0 wrote:
> >
> >> Hi All,
> >>
> >> I have installed gentoo on my laptop recently and I am having a huge
> >> problem with speed.
> >>
> >> The problem is the insanely slow disk access that I am getting.
> >>
> >> here is some output:
> >>
> >> manticore ~ # hdparm -tT /dev/hda
> >>
> >> /dev/hda:
> >> Timing cached reads: 5702 MB in 2.00 seconds = 2857.11 MB/sec
> >> Timing buffered disk reads: 6 MB in 3.37 seconds = 1.78 MB/sec
> >>
> >> manticore ~ # /etc/init.d/hdparm start
> >> * Running hdparm on /dev/hda ...
> >> HDIO_SET_DMA failed: Operation not permitted
> >> [ ok ]
> >> * Running hdparm on /dev/hdd ...
> >> HDIO_SET_DMA failed: Operation not permitted
> >> [ ok ]
> >>
> >>
> >> I read on a forum somewhere that this could be caused by the HAL daemon
> >> so I shut that down and no luck :-(
> >>
> >> Any ideas?
> >>
> >> Thanks
> >> Wayn0
> >>
>
> Also check that DMA is enabled. If you have the wrong or no chipset
> selected in your kernel, it won't be there. lspci may be a good one to
> check as well.
>
> Dang, that is slow tho.
>
> Dale
>
> :-) :-)
> --
> [email protected] mailing list
>
>
I'd also recommending after checking for the above, also check what level of
UDMA is set. Try this: hdparm -I /dev/hda | grep -i dma
Yours should say probably either udma3 or udma4. My SATA-I drive is set to
udma5, for example:
hdparm -I /dev/sda | grep -i dma
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
--
- Mark Shields
