On Sat, 2003-12-13 at 19:41, Rune Maagensen wrote:
>
> Ok, thanks, but is there a performance penalty from running normal DMA compared to
> UDMA, I know both the disk and chipset is capable?
my systems widthout DMA have a transfer speed about 2M/s, with DMA about
7M/s, with ata100 about 25M/s.
Dobai-Pataky Balint wrote:
> On Thu, 2003-12-11 at 22:27, Rune Maagensen wrote:
>
>> using_dma= 0 (off)
>
>
> try hdparm -i device, to see what modes are suported by hdd
>
/dev/hda:
Model=Maxtor 6Y080P0, FwRev=YAR41BW0, SerialNo=Y2Q5NXLE
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0
On Thu, 2003-12-11 at 22:27, Rune Maagensen wrote:
> using_dma= 0 (off)
try hdparm -i device, to see what modes are suported by hdd
and a cat /proc/ide/piix for more info,
my optinion is you can safely turn on simple dma(hdparm -d1 device), you
can only worry about udma modes (-X66 ->-X69)
I administer a mail/webserver for aprox. 500 users. So far it's running UW-imap, and
the performance is horrible.
It's a celeron 1700, 512 MB DDR 333, Maxtor DiamondMax Plus 9 80G (8MB cache), ASUS
P4B800 (Intel 865PE chipset).
While I'm waiting for my RAID card I'd like to turn on DMA for the
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