> >> The _sore_ thing is that with 2.4.x-nano kernels offsets/jitter got >> that good within minutes. Now many years later it takes days... :-( > > I think that's a bug introduced by the tickless scheduler work. > > >> For my daytime use of ntp, convergence in less than 5 minutes is >> essential. Due to some unusual peripherials, that often have drivers >> dictating a certain kernel version its is often impossible to find a >> linux kernel version that support both the proprietary drivers and >> decent ntp-server performance. > > Do you build your own kernels? > > It looks like there is a simple change that fixes the convergence. > http://lkml.org/lkml/2009/5/4/373 > > There is also the TSC calibration mess. If you are only running on one > machine, or one type of system, you can patch the kernel to use a > hard-coded > answer. > > Or you can try one of the non-TSC clock sources.
Thanks! That might be good news after a looong dark night. -- Björn _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
