On Saturday 01 May 2004 10:09, Ian wrote:
> Since updating, I have seen that my transfer rate between partions has
> dropped to roughly 2 - 3 Mb/s, I was getting over 10.
> On bootup, moving to verbose output ,it tells me that the bus speed is
> 33mhz.......
> I believe it was set at 100mhz..... in Hardrake, it doesn't seem to allow
> me any options to alter this.
> How do I do it?
> Before anyone says anything, yeah, I'm a complete prat :-)
Most likely you do not have DMA enabled on your Hard drive.
Install the hdparm package then open a root terminal
hdparm -i /dev/hda (assuming the drive is hda )
will tell you the transfer modes supported by the drive, and the mode in use
will be marked with an asterix as shown in my case here:-
[EMAIL PROTECTED] download]# hdparm -i /dev/hda
/dev/hda:
Model=IC35L040AVER07-0, FwRev=ER4OA44A, SerialNo=SXPTXF74826
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=40
BuffType=DualPortCache, BuffSize=1916kB, MaxMultSect=16, MultSect=16
CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=80418240
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=yes: disabled (255) WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 1:
* signifies the current active mode
You can use hdparm to change the transfer mode (see man hdparm), but it is
actually easier to just edit the file /etc/sysconfig/harddisks
uncomment the transfer mode you wish to enable. (You need to reboot before the
edits become active)
The command
hdparm -t /dev/hda
will measure your disc transger rate for you.
derek
BTW: Please remove the "Reply To:" in your mail settings. It screws up list
replies and is not needed anyway.
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