time runs too slow on maple

Benjamin Herrenschmidt benh at kernel.crashing.org
Tue Jan 10 23:17:53 EST 2006


On Tue, 2006-01-10 at 08:17 +0100, Olaf Hering wrote:
>  On Tue, Jan 10, Benjamin Herrenschmidt wrote:
> 
> > We don't know if the problem has anything to do with the SMP tbsync. You
> > are certainly welcome to improve that code, but the root of the problem
> > is probably that the timebase calibration that we obtain from Open
> > Firmware is not precise. Either that, or the clock is indeed not very
> > stable (that would be bad). The first one could be worked around by
> > doing some proper calibration and updating PIBS I suppose.
> 
> It has firmware 1.06. Does it really work on your board? Just wondering
> if only my board goes slower.

Dunno, my board seems dead unfortunatly :(

Ben.





More information about the Linuxppc64-dev mailing list