Messages in this thread | | | Date | Thu, 22 Apr 2004 23:21:09 -0400 | From | Noel Maddy <> | Subject | IRQ21 flood on nForce2 |
| |
Howdy,
I'm getting over 100k interrupts/second on IRQ21 on an nForce2 motherboard any time I have a driver using that interrupt.
Both ehci_hcd and intel_8x0 use that interrupt. When either or both modules are loaded, it looks like below. With no modules loaded, or with pci=noacpi, behavior is fine.
I've filed more detail at buzilla, including dmidecode and acpidmp output:
http://bugzilla.kernel.org/show_bug.cgi?id=2574
Seems like it'd be something with the ACPI/interrupt configuration, yes?
Noel
-------------
cat /proc/interrupts CPU0 0: 706031 IO-APIC-edge timer 1: 8 IO-APIC-edge i8042 2: 0 XT-PIC cascade 7: 0 IO-APIC-edge parport0 8: 4 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 12: 50 IO-APIC-edge i8042 14: 4742 IO-APIC-edge ide0 18: 0 IO-APIC-level EMU10K1 19: 3 IO-APIC-level Bt87x audio, bttv0 20: 76147 IO-APIC-level ohci_hcd, eth0 21: 104487700 IO-APIC-level ehci_hcd, NVidia nForce2 22: 0 IO-APIC-level ohci_hcd NMI: 0 LOC: 705958 ERR: 0 MIS: 0
vmstat 1 10 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 2 0 0 396560 5804 51848 0 0 77 25 27446 46 95 1 3 1 1 0 0 396560 5804 51848 0 0 0 0 117260 9 100 0 0 0 1 0 0 396560 5804 51848 0 0 0 0 117333 8 100 0 0 0 1 0 0 396560 5804 51848 0 0 0 0 117333 6 100 0 0 0 1 0 0 396560 5804 51848 0 0 0 0 117335 8 100 0 0 0 1 0 0 396560 5812 51848 0 0 0 60 117334 12 100 0 0 0 1 0 0 396568 5812 51848 0 0 0 0 117335 8 100 0 0 0 1 0 0 396568 5812 51848 0 0 0 0 117336 10 99 1 0 0 1 0 0 396568 5812 51848 0 0 0 0 117343 6 100 0 0 0 1 0 0 396568 5812 51848 0 0 0 0 117334 6 100 0 0 0
cat /proc/interrupts CPU0 0: 715191 IO-APIC-edge timer 1: 8 IO-APIC-edge i8042 2: 0 XT-PIC cascade 7: 0 IO-APIC-edge parport0 8: 4 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 12: 50 IO-APIC-edge i8042 14: 4744 IO-APIC-edge ide0 18: 0 IO-APIC-level EMU10K1 19: 3 IO-APIC-level Bt87x audio, bttv0 20: 77101 IO-APIC-level ohci_hcd, eth0 21: 105550345 IO-APIC-level ehci_hcd, NVidia nForce2 22: 0 IO-APIC-level ohci_hcd NMI: 0 LOC: 715119 ERR: 0 MIS: 0
-- In this American stoicism, all phenomena of business life however crooked or foolish work to the prosperity of the universe under a benign commercial Providence who is part the God of the Bible, and part pure money. -- James Buchan, Guardian Unltd, 2002-06-28 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ Noel Maddy <noel@zhtwn.com> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |