Re: ICH5 SATA high interrupt/system load again...

From: Jeff Garzik (
Date: Fri Jul 18 2003 - 18:07:29 EST

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.


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This archive was generated by hypermail 2b29 : Wed Jul 23 2003 - 22:00:36 EST