Re: Fwd: Re: Working nforce2, was Re: Fixes for nforce2 hard lockup, apic, io-apic, udma133 covered

From: Maciej W. Rozycki (macro_at_ds2.pg.gda.pl)
Date: 12/15/03

  • Next message: Maciej W. Rozycki: "Re: Catching NForce2 lockup with NMI watchdog" 
    Date:	Mon, 15 Dec 2003 14:11:55 +0100 (CET)
To: Bob <recbo@nishanet.com>

    On Sat, 13 Dec 2003, Bob wrote:

    > APIC error on CPU0: 02(02)
    > what?? no crash though.
    [...]
    > bob@where cat /proc/interrupts
    > CPU0
    > 0: 3350153 IO-APIC-edge timer
    > 1: 5775 IO-APIC-edge i8042
    > 2: 0 XT-PIC cascade
    > 8: 1 IO-APIC-edge rtc
    > 9: 0 IO-APIC-level acpi
    > 12: 5385 IO-APIC-edge i8042
    > 14: 10 IO-APIC-edge ide0
    > 15: 10 IO-APIC-edge ide1
    > 16: 1717957 IO-APIC-level ide2, ide3, eth0
    > 19: 472929 IO-APIC-level ide4, ide5
    > 21: 0 IO-APIC-level NVidia nForce2
    > NMI: 822
    > LOC: 3350073
    > ERR: 35
    > MIS: 15818

     It looks like the infamous APIC delivery bug -- the "MIS" counter shows
    how many level-triggered interrupts has been erronously delivered as
    edge-triggered ones. No wonder the system shows instability -- you have
    noise problems at the APIC bus. 

    -- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+--------------------------------------------------------------+
+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +
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