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SubjectRe: lost ticks and Hangcheck
On Fri, Aug 19, 2005 at 12:41:07AM -0700, Nathan Becker wrote:
> Hi,
> I'm running kernel with x86_64 target on an AMD X2 4800+ and
> Gigabyte GA-K8NXP-SLI motherboard (bios version F8). I'm having a problem
> with lost clock ticks. The dmesg says
> warning: many lost ticks.
> Your time source seems to be instable or some driver is hogging interupts
> Also if I enable hangcheck, then I get a huge number of Hangcheck messages
> in dmesg.

I get a lot of "kernel: Hangcheck: hangcheck value past margin!" messages
from 2.6.13-rc7 on AMD64 X2 3800+ and Asus A8V deluxe motherboard. No lost
ticks messages however.

> The main other symptom is that the system clock runs fast and
> inaccurately. It seems to run more inaccurately when I'm using the CPU,
> and be basically OK when idling.

That seems to be the case here too: clock runs too fast under heavy load
(burn-in tests involving kernel builds and large disk copies).

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