Current SMP with ACPI dies in a second

[Tomi Vainio - Sun Finland]

Tomi Vainio writes:
 > My old MSI-6120 SMP system has been unusable quite a while with ACPI.
 > I've got these so far:
 >  - Couldn't get vector from ISR
 >  - vmstat -i shows high interrupt rates and system is very slow
 >  - kernel trap 12 panic
 > 
 > Latest problem is something like this:
 > pfs_vncache_unload(): 2 entries remaining
 > current process = 27 (irq17: fxp0)
 > kernel trap 12
 > stray irq20
 > 
 > Kernel config, dmesg, acpidump, etc. files available at
 > http://tomppa.iki.fi/~tomppa/FreeBSD/
 > 
With latest source cvsupped 15 minutes ago system don't panic anymore
but it's still unusable with acpi because of too high interrupt rate
from acpi device.

vmstat -i
interrupt                          total       rate
irq1: atkbd0                         291          1
irq0: clk                          28360         99
irq6: fdc0                             5          0
irq8: rtc                          36303        127
irq12: psm0                          942          3
irq14: ata0                           10          0
irq15: ata1                           49          0
irq16: ahc0 ahc1                    7788         27
irq17: fxp0                         2886         10
irq19: uhci0 bktr0                 31336        110
irq20: acpi0                    11614583      40896
irq9: intpm0                        1376          4
Total                           11723929      41281

  Tomppa