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    Subject[2.6.7] Ehci controller interrupts like crazy on nforce2
    Here it is: another nforce2 hardware bug. The ehci controller seems to
    send a massive number of interrupts to the kernel (264379 per second).
    This uses about 5 to 10% of the cpu. This shows up in top in the
    "hi"(hard interrupts) indicator. Nothing unusual shows up in the kernel
    log. My system has an Asus A7N8X Nforce2 Board with an Athlon XP 2800+
    mounted on it.

    [joe@omega3:~]$ cat /proc/interrupts ; sleep 1; cat /proc/interrupts
    CPU0
    0: 583513 XT-PIC timer
    1: 1279 IO-APIC-edge i8042
    7: 137293 IO-APIC-edge parport0
    8: 0 IO-APIC-edge rtc
    9: 0 IO-APIC-level acpi
    14: 41463 IO-APIC-edge ide0
    15: 23 IO-APIC-edge ide1
    17: 9 IO-APIC-level EMU10K1
    18: 18584 IO-APIC-level eth0
    20: 121541873 IO-APIC-level ehci_hcd
    21: 0 IO-APIC-level ohci_hcd
    22: 0 IO-APIC-level ohci_hcd
    NMI: 0
    LOC: 583348
    ERR: 0
    MIS: 0
    CPU0
    0: 584760 XT-PIC timer
    1: 1280 IO-APIC-edge i8042
    7: 137578 IO-APIC-edge parport0
    8: 0 IO-APIC-edge rtc
    9: 0 IO-APIC-level acpi
    14: 41505 IO-APIC-edge ide0
    15: 23 IO-APIC-edge ide1
    17: 9 IO-APIC-level EMU10K1
    18: 18641 IO-APIC-level eth0
    20: 121806252 IO-APIC-level ehci_hcd
    21: 0 IO-APIC-level ohci_hcd
    22: 0 IO-APIC-level ohci_hcd
    NMI: 0
    LOC: 584595
    ERR: 0
    MIS: 0
    [joe@omega3:~]$

    Any help or random thougths are welcome.

    Happy Hacking,
    Joe

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