[LinuxPPS] PPS Setup problems

Bernhard Schiffner bernhard at schiffner-limbach.de
Fri Feb 15 17:02:11 CET 2008


Am Freitag, 15. Februar 2008 16:48 schrieb Udo van den Heuvel:
> Udo van den Heuvel wrote:
> > Bernhard Schiffner wrote:
> >> A guess
> >> Kernel: kernel/time/ntp.c
> >> commit e13a2e61dd5152f5499d2003470acf9c838eab84
> >
> > Which does?
>
> Ah...
>
> ntp: correct inconsistent interval/tick_length usage
>
>     clocksource initialization and error accumulation.  This corrects a
> 280ppm
>     drift seen on some systems using acpi_pm, and affects other
> clocksources as
>     well (likely to a lesser degree).
>
> So good for us!
> Does the patch apply to 2.6.24.2?

Yes. ntp.c is changing very slowly.

But beside this IMHO it helps with  clocksource switching, dynticks,  
powermanagent (CPU) issuses too.

This was my primary concern.

Bernhard
>
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