Asus P4R8L motherboard in UDMA

[Andrej Trobentar]

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Pozdrav,

Imam zgoraj omenjeno osnovno ploščo v računalniku Pundit-R
(http://www.asus.com/prog/spec.asp?m=Pundit-R&langs=01) in gor naložen
RH 7.3, kernel 2.4.27. Ugotovil sem, da mi disk ne dela v UDMA načinu,
zato sem prvo preveril setup :

Device       : Hard disk
Vendor       : ExcelStor Technology J680
Size         : 82,3 GB
LBA Mode     : supported
Block Mode   : 16sectors
PIO mode     : 4
Async DMA    : MultiWord DMA-2
Ultra DMA    : Ultra DMA-5
SMART monit. : Supported

Torej bil disk moral delati v UDMA načinu. Ko zbootam linux in napišem
dmesg nikjer ne zasledim UDMA string-a, prav tako "hdparm /dev/hda" pokaže :

/dev/hda:
~ multcount    = 16 (on)
~ I/O support  =  0 (default 16-bit)
~ unmaskirq    =  0 (off)
~ using_dma    =  0 (off)
~ keepsettings =  0 (off)
~ nowerr       =  0 (off)
~ readonly     =  0 (off)
~ readahead    =  8 (on)
~ geometry     = 10011/255/63, sectors = 160836480, start = 0
~ busstate     =  1 (on)

Če poizkušam vklopiti DMA z "hdparm -d1 /dev/hda" dobim :

/dev/hda:
~ setting using_dma to 1 (on)
~ HDIO_SET_DMA failed: Operation not permitted
~ using_dma    =  0 (off)

Kaj moram vključiti v kernelu, da mi bo disk delal malo hitreje? :D

"hdparm -tT /dev/hda" da sedaj takšne mizerne rezultate :

/dev/hda:
~ Timing buffer-cache reads:   128 MB in  0.30 seconds =426.67 MB/sec
~ Timing buffered disk reads:  64 MB in 26.83 seconds =  2.39 MB/sec


- --
Vnaprej hvala in lep pozdrav,

	Andrej.

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