IStormy Monday: Wher does the weather come from?

[Kevin Oberman]

> From: Martin von Boehlen <boehlen at qualimedic.de>
> Date: Sun, 12 Feb 2006 01:57:24 +0100
> Sender: owner-freebsd-acpi at freebsd.org
> 
> Hello,
> 
> there are some probs with an ACPI interrupt storm on 
> FreeBSD 6.0/6.1-PatchedIntoOblivion ;)
> 
> I DO NOT HAVE A BIOS WHERE ACPI IS AN OPTION.
> I need to disable it completely!
> But 
> root at www1 ~ # kldstat
> Id Refs Address    Size     Name
>  1    7 0xc0400000 3412e8   kernel
>  2    1 0xc0742000 58554    acpi.ko
>  3    1 0xc45a7000 16000    linux.ko
> shows me acpi.ko 
> I don't want it! I don't need it! How do I get rid of it?
> Where can I get further hints ?
> And, yes, I've scourged the mailing lists, the FAQ, the handbook, whatsoever!
> 
> Now, 'top' often reports 'istorm' states on 'irq9: acpi0' with the 'S' option 
> and the machine is incredibly slow.
> 
> 'vmstat' does NOT report any stray interrupts, but with vmstat -i it goes like 
> this:
> 
> root at www1 ~ # vmstat -i
> interrupt                          total       rate
> irq6: fdc0                            10          0
> irq9: acpi0                    283447006      23415
> irq14: ata0                           41          0
> irq16: ahc0                           86          0
> irq17: iir0                       485463         40
> irq18: dc0                       9395156        776
> irq19: dc1                      21534416       1778
> cpu0: timer                     24208102       1999
> cpu1: timer                     24181422       1997
> Total                          363251702      30008
> 
> 
> I have compiled the kernel for SMP with APIC on. But I do NOT need ACPI! 
> How do I disable it??
> I've seen no kernel option.
> I've seen no hints in /etc/defaults/rc.conf

This used to be a FAQ, but it seems to have gotten less common.

Enter the line 'hint.adv.0.disabled="1"' into /boot/loader.conf.
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634