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    SubjectRe: SMP P4 APIC/interrupt balancing
    On Wed, 17 Apr 2002, Ingo Molnar wrote:

    >
    > On Wed, 17 Apr 2002, James Bourne wrote:
    >
    > > Where would I find this separate patch? Is there something I could do
    > > some testing on?
    >
    > the timer irq inbalance problem should be solved by the attached patch.

    Thanks Ingo,
    That has balanced the timer irqs. I've also enabled hyper threading
    (append="acpismp=force").

    Here's the output from /proc/interrupts:
    brynhild:bash$ cat /proc/interrupts
    CPU0 CPU1 CPU2 CPU3
    0: 3033 2911 2871 2880 IO-APIC-edge timer
    1: 1 0 2 0 IO-APIC-edge keyboard
    2: 0 0 0 0 XT-PIC cascade
    8: 1 0 0 0 IO-APIC-edge rtc
    18: 5 3 3 4 IO-APIC-level aic7xxx
    19: 480 421 412 529 IO-APIC-level eth0
    20: 5 3 4 4 IO-APIC-level aic7xxx
    21: 5 3 4 4 IO-APIC-level aic7xxx
    27: 588 1010 654 943 IO-APIC-level megaraid
    NMI: 0 0 0 0
    LOC: 11530 11528 11528 11466
    ERR: 0
    MIS: 0

    And, you've gotta like this line:
    Total of 4 processors activated (14299.95 BogoMIPS).

    I'm going to do some testing on it to check it's stability.
    I'll let you know the results.

    Thanks again and regards,
    James

    >
    > Ingo
    >

    --
    James Bourne, Supervisor Data Centre Operations
    Mount Royal College, Calgary, AB, CA
    www.mtroyal.ab.ca

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