spurrious interrupt problem
Andrew Gallatin
gallatin at cs.duke.edu
Fri Aug 27 08:33:58 PDT 2004
I have a quad processor amd64 box running RELENG_5 where we're seeing
some spurrious interrupts from the usb ohci controller.
The people on site claim there is nothing plugged in to the USB ports,
yet we get tons of ohci interrupts. Note the 1:1 relationship
with interrupts for bge0 -- irq 19 and irq 31 seem to be "wired"
together. Eg, for every interrupt on irq 31 (bge), I get a spurrious
interrupt on irq 19 (ohci).
% vmstat -i
interrupt total rate
irq0: clk 2662019 1023
irq4: sio0 192 0
irq6: fdc0 5 0
irq8: rtc 332638 127
irq14: ata0 47 0
irq19: ohci0 ohci1 15019 5
irq29: mpt0 16 0
irq30: mpt1 1746 0
irq31: bge0 15011 5
Total 3026693 1163
I've left verbose boot, mptable and acpidump output at
http://people.freebsd.org/~gallatin/quartet
The box is ~3000 miles away and getting it power-cycled is a pain, so
I haven't tried removing device acpi, as I'm not sure that's supported
on AMD64.
Thanks,
Drew
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