Extremely slow disk transfers with SATA disks

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Vanja Hrustic wrote:
> On Thu, 23 Mar 2006 09:44:09 -0500
> Chris Mauritz <chrism@xxxxxxxxx> wrote:
>
>   
>> Vanja Hrustic wrote:
>>     
>>> I have installed CentOS 4.2, recently, on new computer.
>>>
>>> Everything seemed to work fine.
>>>
>>> However, we've found out that disk transfers are incredibly slow,
>>> and I just can't figure out what to do in order to fix it.
>>>
>>> Computer is now running CentOS 4.3 (updated it 1 hour ago), and same
>>> thing is still present. I hoped kernel upgrade might fix it, but it
>>> didn't.
>>>   
>>>       
>> I am having similar issues with an Intel 845 based board.   It sounds 
>> like your disks are running in PIO rather than in UDMA mode.
>>     
>
> Erm, if I'm not wrong, SATA uses DMA 'by default', it's not something
> we can change.
>
> Thanks anyway :)
>   

Could be.  I'm certainly not an expert on the subject.  If/when you get 
it fixed, I'd appreciate it if you'd post your solution.  Maybe it will 
help others (like me!) out.

Cheers,



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