* 2.6.9: VIA sATA cannot switch to 32bit I/O?
@ 2004-12-21 14:41 Jan Marek
2004-12-21 19:32 ` Jeff Garzik
0 siblings, 1 reply; 2+ messages in thread
From: Jan Marek @ 2004-12-21 14:41 UTC (permalink / raw)
To: linux-kernel
Hallo l-k,
I have problem with my Abit AV8 MB (s939 with VIA KT800Pro chipset and
VIA sATA controller and 120GB Seagate Barracuda disk): I cannot switch
32bit access to disk to on?! I'm using libata driver...
When I use hdparm -c1 /dev/sda, I've got some error message (sorry, I
haven't this message here, it's my home computer). Therefore disk is too
slow to putting data for burning CD's and I need 'burnfree' feature...
Please, have anyone advice for me to speedup disk access, or is it
possible?
Sincerely
Jan Marek
--
Ing. Jan Marek
University of South Bohemia
Academic Computer Centre
Phone: +420-38-7772080
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: 2.6.9: VIA sATA cannot switch to 32bit I/O?
2004-12-21 14:41 2.6.9: VIA sATA cannot switch to 32bit I/O? Jan Marek
@ 2004-12-21 19:32 ` Jeff Garzik
0 siblings, 0 replies; 2+ messages in thread
From: Jeff Garzik @ 2004-12-21 19:32 UTC (permalink / raw)
To: Jan Marek; +Cc: linux-kernel
Jan Marek wrote:
> Hallo l-k,
>
> I have problem with my Abit AV8 MB (s939 with VIA KT800Pro chipset and
> VIA sATA controller and 120GB Seagate Barracuda disk): I cannot switch
> 32bit access to disk to on?! I'm using libata driver...
>
> When I use hdparm -c1 /dev/sda, I've got some error message (sorry, I
> haven't this message here, it's my home computer). Therefore disk is too
> slow to putting data for burning CD's and I need 'burnfree' feature...
>
> Please, have anyone advice for me to speedup disk access, or is it
> possible?
This will not speed up disk access. libata uses 16-bit I/O
unconditionally for PIO data transfers...
...but you are using DMA for data transfers, which is light years
faster than PIO anyway.
Jeff
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