David A. Gatwood wrote:

> On Sat, 16 Feb 2002, someone wrote:
>                      
> Remember that time on PowerPC is (generally) calculated based on bus
> speed.  I assume that NetBSD does this as well (since I think that's the
> only processor-independent way to do it....  ;-)


aha. I do have a 233 MHz daughtercard (up from the stock 120): 
perhaps that's the problem.


> A number of processor cards report a bogus number for the bus speed in
> their open firmware declaration rom, particularly when overclocked.  Most
> OSes have an option for manually overriding the bus speed.  I've never
> tried that under NetBSD, so I can't say for sure.  Anyway, try finding a
> copy of the old Newer Technologies' gauge series and running Clockometer. 
> That will get you a better estimate of the actual bus speed.  Try that
> value.
> 
> If it still drifts too much, get the exact number of seconds it reported
> in...  say a day.  Multiply the bus speed by the real number of seconds in
> the day, then divide by the number of seconds it reported in that same
> period of time.


It does, thanks.