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SubjectRe: [2.6] system is very slow during disk access
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Try to unmask IRQ, this should realy help...
hdparm -u1 /dev/hda

I usually do on my disks:
hdparm -c1 -u1 -d1 -X69 /dev/hda
(note: use -X69 only for for an UDMA 100 or 133 drive)

> > Maybe you just didn't enable DMA on them. Use hdparm -v /dev/foo to find
> > out.
>
> DMA is on.
>
> root@lfs:/home/mb> hdparm -v /dev/hda
>
> /dev/hda:
> multcount = 16 (on)
> IO_support = 1 (32-bit)
> unmaskirq = 0 (off)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 14244/16/63, sectors = 80418240, start = 0
>
>
> root@lfs:/home/mb> hdparm -v /dev/hdc
>
> /dev/hdc:
> multcount = 16 (on)
> IO_support = 1 (32-bit)
> unmaskirq = 0 (off)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 14244/16/63, sectors = 80418240, start = 0

- --

!
Willy Gardiol - gardiol@libero.it
gardiol.eu.org
Use linux for your freedom.

"La guerra non farà mai finire
alcuna guerra, nel migliore dei
casi sarà stata una guerra in più."

Gino Strada, Buskashì

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