Incredibly slow disk access
On Jan 7, 2008 8:37 PM, Dale <dalek1967@bellsouth.net> 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
:-) *:-)
--
gentoo-user@lists.gentoo.org 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
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