Re: Help with hdparm
On 27.08.2002 14:35:38 chainy wrote:
> On Tuesday 27 August 2002 09:49, Bob Proulx wrote:
[...]
> >
> > I have an FIC SD11 as well but with an Athlon 950 MHz. I am running a
> > 2.4.18 kernel. DMA is enabled by default in the kernel for me.
> > (Which I remember as needing to turn on with previous kernels.) I
> > have a Maxtor ATA/100 capable 60GB 7200 rpm currently installed and
> > these are my results.
> >
> > hdparm -Tt /dev/hda
> >
> > Timing buffer-cache reads: 128 MB in 0.84 seconds =152.38 MB/sec
> > Timing buffered disk reads: 64 MB in 1.96 seconds = 32.65 MB/sec
> >
> > hdparm /dev/hda
> >
> > /dev/hda:
> > multcount = 16 (on)
> > 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 = 7299/255/63, sectors = 117266688, start = 0
> > busstate = 1 (on)
> >
[...]
>
> Thanks for the advice and experience, yours are some wonderful results,
would
> you mind to tell me how did you configure your hdparm?
>
> I wanted to ask you what kind of bus are you using, because i am getting
the
> same results with the old 40 wires wide and the 80 wires.
I ask, too ! ;o)
I have a SD-11 with a Maxtor 40 GB HD, too.
The newest BIOS for this board.
Never got more than between 10 and 12 MB/s at buffered disk reads.
Although I am using the 80 wires I can not use UDMA. Only Multiword-DMA 2.
Every faster option results in DMA errors and after a short period the
kernel hangs.
Have no idea where the problem is. My UDMA cable is out of a COMPAQ
Business PC.
So this cable should not be source of the problem. It is short and the
quality seems to be good.
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