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    SubjectRe: [PATCH] 2.6, 2.4, Nforce2, Experimental idle halt workaround instead of apic ack delay.
    On Thu, 12 Feb 2004, Ross Dickson wrote:

    > Greetings,
    > Approaching from this perspective the following patch implements a new idle
    > thread. One which does not go into C1 disconnect (hlt) if less than 1.6% of the
    > apic timer interval is left to execute. When you think about it, why do we
    > disconnect if we are about to reconnect? It also has a small timing delay
    > to help with back to back disconnect cycles ( SMI might put us into one? ).
    > The result should be a slightly faster system (then with my apic ack delay
    > patch) when busy but still with disconnect functioning to save power and lower
    > heat with typical loads.

    Is there a measurable performance loss over not having the patch at all?
    Some nforce2 systems work just fine. Is there a way to distinguish
    between systems that need it and those that don't?

    (if anyone's running a betting pool, my money's on nforce2+cpu with half
    frequency multiplier ;)
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