by picassob.. » Sun, 23 May 1999 04:00:00
Coul'd someone tell me how to activate DMA usage for my Maxtor91000D8?
I have an HX chipset, and the BIOS is also capable of using (U)DMA as
well as my drive.
IMPORTANT:
----------
For more information please See my posting from Friday with subject:
[UDMA DOESN'T WORK !!!]
Thank you very much!
With best regards
Erkan Aksit
by picassob.. » Mon, 24 May 1999 04:00:00
OK...Quote:>Your BIOS may "recognize" UDMA, but the 430HX doesn't have a
>controller for it. You need to add in a UDMA controller card such as
>Promise Ultra33 or Ultra66.
but why I can enable/diable the use of DMA in Win*???
I can see difference of CPU load (NT4) when I anable/diasble DMA when
reading ~40 MByte file to RAM:
with dma: ~10-20 % CPU load
without dma: ~70-80 % CPU load
There is a great difference...
AND:
h2bench reports me up to 14,9 MByte/s (read lin.). Under Linux
hdparm (optimzed to the possible limit) reports 9,7 MByte/s.
Now I'm little bit confused ?!?!?!? Any idea???
Regards
Erkan
by Mathieu Imrazen » Mon, 24 May 1999 04:00:00
You can enable the DMA (free a lot of CPU time), but on the HX chipset, theQuote:> but why I can enable/diable the use of DMA in Win*???
> I can see difference of CPU load (NT4) when I anable/diasble DMA when
> reading ~40 MByte file to RAM:
> with dma: ~10-20 % CPU load
> without dma: ~70-80 % CPU load
> There is a great difference...
> AND:
> h2bench reports me up to 14,9 MByte/s (read lin.). Under Linux
> hdparm (optimzed to the possible limit) reports 9,7 MByte/s.
> Now I'm little bit confused ?!?!?!? Any idea???
Mathieu
by picassob.. » Tue, 25 May 1999 04:00:00
hdparm -m16 -A1 -c1 -X34 -d1 /dev/hda
is the actually the best for my drive on my Hx chipset
Regards
Erkan
by Tim Moor » Wed, 26 May 1999 04:00:00
> Hello!
> Coul'd someone tell me how to activate DMA usage for my Maxtor91000D8?
> I have an HX chipset, and the BIOS is also capable of using (U)DMA as
> well as my drive.
> IMPORTANT:
> ----------
> For more information please See my posting from Friday with subject:
> [UDMA DOESN'T WORK !!!]
> Thank you very much!
> With best regards
> Erkan Aksit
"Everything is permitted. Nothing is forbidden."
WS Burroughs.
1. Enabling DMA on an Intel 856PE chipset.
Hi all,
I've searched and searched on how to get DMA working on my harddrive,
but it's still not working :)
I'm running a Gigabyte 8IPE1000 mobo, which is based on an Intel 865PE
chipset. The controller is an ICH5.
I've got a SATA Seagate 160GB 7200.7 which runs beatifully (50MB/sec),
but the PATA Seagate 80GB Barracuda V (/dev/hdd) runs like dog's
bollocks (2MB/sec).
beast:/home/scottr# hdparm /dev/hdd
/dev/hdd:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 156299375, start = 0
beast:/home/scottr# hdparm -i /dev/hdd
/dev/hdd:
Model=ST380011A, FwRev=3.04, SerialNo=3JV02WWK
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156299375
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 2:
* signifies the current active mode
beast:/home/scottr#
Problem is, when I try to enable DMA I get:
beast:/home/scottr# hdparm -d1 /dev/hdd
/dev/hdd:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
beast:/home/scottr#
I've compiled my own 2.6.6 kernel after downloading the source deb from
the Debian archive.
I've selected the follwing options, which I read that I needed from many
many sources:
CONFIG_IDE_GENERIC = y
CONFIG_BLK_DEV_IDEPCI = y
CONFIG_BLK_DEV_GENERIC = y
CONFIG_BLK_DEV_IDEDMA_PCI = y
CONFIG_IDEDMA_PCI_AUTO = y
CONFIG_BLK_DEV_PIIX = y
and also for the SATA support:
CONFIG_SCSI_ATA_PIIX = y
I'm pretty sure this is all I need - am I missing something? I'm running
an up to date Debian Sarge. Or is this an issue I should be taking
somewhere else?
Any help is appreciated... I'm what you'd call an advanced Windows user
who's trying desperately to migrate, but this is slowing things down a
bit :)
Cheers,
Scott Raynel.
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