i did turn dma on , and i did turn 32bit transfers on ...
but thats it.
that made me go up to 7.5 from 4-5 mb/sec ... since this is my boot dirve
i had to reboot about 7 times (every time i turned udma on )
and i finally gave up...
here is a listing from my hdparm :
[root@beast widow]# hdparm /dev/hda
/dev/hda:
multcount = 0 (off)
I/O support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 782/128/63, sectors = 6306048, start = 0
here are the settings i use :
grep hdparm *
grep: init.d: Is a directory
rc.local:hdparm -X12 /dev/hda
rc.local:hdparm -c1 /dev/hda
rc.local:hdparm -d1 /dev/hda
rc.local:hdparm -u1 /dev/hda
-X Set the IDE transfer mode for newer (E)IDE/ATA2 drives. This is
typically used in combination with -d1 when enabling DMA
to/from
a drive on a supported interface chipset (such as the Intel
430FX
Triton), where -X34 is used to select multiword DMA mode2
trans-
fers. Apart from that, use of this flag is seldom
necessary
since most/all modern IDE drives default to their fastest
PIO
transfer mode at power-on. Fiddling with this can be both
need-
less and risky. On drives which support alternate
transfer
modes, -X can be used to switch the mode of the drive
only.
Prior to changing the transfer mode, the IDE interface should
be
jumpered or programmed (see -p flag) for the new mode setting
to
prevent loss and/or corruption of data. Use this with
extreme
caution! For the PIO (Programmed Input/Output) transfer
modes
used by Linux, this value is simply the desired PIO mode
number
plus 8. Thus, a value of 09 sets PIO mode1, 10 enables
PIO
mode2, and 11 selects PIO mode3. Setting 00 restores the
drive's
"default" PIO mode, and 01 disables IORDY.
> -----Original Message-----
> From: Bart Kus [mailto:kernel@ERTW.ca]
> Sent: Friday, August 13, 1999 12:12 AM
> To: linux-kernel@vger.rutgers.edu
> Subject: Abit BP6 UDMA issues.
>
>
> Hi, I hope you find this informative.
>
> I recently bought an Abit BP6 and am trying to get my drives
> working with it at UDMA(33) speeds. I keep on getting these errors:
>
> hdb: timeout waiting for DMA
> hdb: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
> hda: DMA disabled
> hdb: DMA disabled
> ide0: reset: success
>
> whenever I try to write large amounts of data to /dev/hdb.
>
> Here are some "interesting" clippings of boot sequences and
> other things.
>
> (from dmesg)
> hda: ST36450A, 6149MB w/448kB Cache, CHS=784/255/63, DMA
> hdb: Maxtor 92048D8, 19531MB w/512kB Cache, CHS=39683/16/63, UDMA(33)
> hdc: IBM-DJAA-31700, 1628MB w/96kB Cache, CHS=3308/16/63, DMA
> hdd: ATAPI 24X CD-ROM drive, 128kB Cache, DMA
>
> (from dmesg)
> Partition check:
> hda: hda1
> hdb: hdb1
> hdc:hdc: timeout waiting for DMA
> hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
> hdc: timeout waiting for DMA
> hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
> hdc: timeout waiting for DMA
> hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
> hdc: timeout waiting for DMA
> hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
> hdc: DMA disabled
> hdd: DMA disabled
> ide1: reset: success
> [PTBL] [827/64/63] hdc1
>
> (from hdparm -t /dev/hda)
> /dev/hda:
> Timing buffered disk reads: 32 MB in 3.73 seconds = 8.58 MB/sec
>
> (from hdparm -t /dev/hdb)
> /dev/hdb:
> Timing buffered disk reads: 32 MB in 1.67 seconds =19.16 MB/sec
>
> As you can tell, I bought /dev/hdb for SPEED :) It'd be nice
> to be able to
> capture video to it. Make It Go(tm) ? :)
>
> --Bart
>
>
> -
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