Yipe! Ive never tried using hdparm that way... Looks like DMA isnt being
used. I assume this is the problem. I have tried turning dma on using
hdparm, but hdparm -t -T shows the same results as when DMA was
off... slowness. Can you confirm for me that this is in fact the
problem?
Also, where can I look to make DMA used? Linux is configured ok, i have
checked that out... I don't believe that my BIOS has any settings for
DMA... I am using my on-board IDE controller, it is build into an Asus
HOT-591 motherboard. Think i should try an off-board IDE controller?
PS: I just did hdparm -d 1 /dev/hdc and now the drive reports to be using
DMA, but the output from the read tests are just as slow, so i have to
assume that it only thinks it is using DMA.
Thanks,
Mark
BEFORE DMA TURNED ON:
/dev/hdc:
multcount = 0 (off)
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 = 5606/255/63, sectors = 90069840, start = 0
/dev/hdc:
Timing buffer-cache reads: 128 MB in 3.13 seconds = 40.89 MB/sec
Timing buffered disk reads: 64 MB in 25.11 seconds = 2.55 MB/sec
AFTER DMA TURNED ON:
/dev/hdc:
multcount = 0 (off)
I/O support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 5606/255/63, sectors = 90069840, start = 0
/dev/hdc:
Timing buffer-cache reads: 128 MB in 3.68 seconds = 34.78 MB/sec
Timing buffered disk reads: 64 MB in 23.08 seconds = 2.77 MB/sec
On Wed, 6 Dec 2000, Nabil Sayegh wrote:
> Could you post the output of:
>
> hdparm /dev/hdX
> hdparm -t -T /dev/hdX
>
> cu
> --
> Nabil Sayegh
>
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