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SubjectRe: ICH5 SATA high interrupt/system load again...
What also is interesting is that when I configure my kernel to use APIC it
hangs during boot just as it found the SATA drives...

/ Stefan

On Fri, 18 Jul 2003, Jeff Garzik wrote:

> Stefan Cars wrote:
> > Hi!
> >
> > I've seen the discussion regarding high interrupt / system load on the
> > ICH5 SATA and I'm asking what todo about it if I can't put my BIOS into
> > "normal" mode. This machine is an Dell Precision 360 and for some stupid
> > reason they have for this model removed the possibility in the BIOS to
> > change this sort of things (you can't change much really). I'm using
> > 2.4.21-ac4. Just to extract a simple tar file brings the system load up
> > and the computer is slow...
> >
> >
> > Here is some info:
> > tjatte:/import# cat /proc/interrupts
> > CPU0
> > 0: 557725 XT-PIC timer
> > 1: 102 XT-PIC keyboard
> > 2: 0 XT-PIC cascade
> > 5: 0 XT-PIC ehci_hcd
> > 9: 16409116 XT-PIC libata, usb-uhci, eth0
>
>
> Hum... interesting. I had seen reports of this before, but they were of
> the variety "drivers/ide has high load, libata doesn't". So it seems
> intrinsic of the hardware, which is a useful data point.
>
> Have you tried messing around with interrupt routing in BIOS setup?
> Since ATA, USB, and eth0 are all on the same interrupt, changing that
> may affect the situation positively.
>
> Jeff
>
>
>
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