> >I also noticed that I have regular kernel messages concerning ntpd:
> >frequency error 512 PPM exceeds tolerance 500 PPM
> >
> >Does it indicate a hardware problem?
>
> No, but our current timekeeping code has issues. There are multiple PR's
> about this. We are working on this... Keep tuned to tech-kern :-)

I'm currently testing it at home with the same configuration:
2.0 on Sparc Ultra1 with the default ntp.conf
AFAICS ntpd works fine with no frequency errors.

Regards,
Thierry.