On Thu, 2003-06-12 at 18:44, Jeffrey Stedfast wrote:
> I also run XFS on my home desktop and until I recently rebuilt my kernel
> with UDMA support, any amount of disk I/O would bring my machine to its
> knees.
>
*nod*
> I suggest you make sure that your kernel has UDMA support built in.
>
mine does.
> a quick and dirty check might be to do (as root):
>
> /sbin/hdparm -c -d /dev/hda1
I have this in my startup script:
hdparm -u 1 -a 8 -c 1 -d 1 -k 1 /dev/hda
and I get this when it's run:
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 1 (on)
readahead = 8 (on)
=:/
Any other thoughts? =:) I'm leaning towards notzed's hypothesis of
many, many small temporary files being created, then growing in a big,
big way, then being deleted.
> If you get something like the following output:
>
> /dev/hda1:
> IO_support = 0 (default 16-bit)
> using_dma = 0 (off)
>
> then this is what your problem is. After I rebuilt my kernel with UDMA
> support, I get:
>
> /dev/hda1:
> IO_support = 1 (32-bit)
> using_dma = 1 (on)
>
> or some such. this is what you want :-)
>
> Jeff
--
,-----------------------------------------------------------------//
| Jason 'vanRijn' Kasper :: Numbers 6:22-26
`
| All brontosauruses are thin at one end, much MUCH thicker
| in the middle, and then thin again at the far end. That is
| the theory that I have and which is mine, and what it is too.
,
| bash$ :(){ :|:&};:
`----------------------//
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