Re: NTP problem - Clock too fast for NTP to keep up?

From: James Wilkinson (james_at_westexe.demon.co.uk)
Date: 02/09/05

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    Date: Wed, 9 Feb 2005 00:23:27 +0000
To: For users of Fedora Core releases <fedora-list@redhat.com>

    jdow wrote:
    > Also try booting with "noapic" and "nolapic" options. (I'd LOVE to
    > know why the APIC screws up the ntp operations.)

    I'm sure the kernel developers would, too.

    But it's not that improbable, if you think about it.

    The kernel measures the passage of time by counting timer ticks. A timer
    works by sending interrupts to the CPU (which are received by the
    kernel) every so often. And a Programmable Interrupt Controller (such as
    the Advanced PIC, or APIC) is responsible for marshalling those
    interrupts and sending them on.

    James. 

    -- 
James Wilkinson       | The camel has a single hump;
Exeter    Devon    UK | The dromedary two;
E-mail address: james | Or else the other way around.
@westexe.demon.co.uk  | I'm never sure.  Are you?  -- Ogden Nash
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