Hello Try to run ntpd with realtime priority (options '-N' or '-P priority'). Your an hourly jobs can be executed several slower but it may improve the time synchronization.
2014-12-09 23:45 GMT+04:00, Frister <fris...@gmx.net>: > Hi David, > Yes, You mean the hourly dips? That is caused by the the VLF receive > software that > is running on the same PI. It makes hourly recordings of DC to 24 Khz > with a USB soundcard. The CPU is running at max capacity most of the > time. > > Perhaps it is now time for a dedicated PI, that only has the task of > playing Stratum One. > > If anyone is interested: > https://pivlf.wordpress.com/ > > > 73, Frits W1FVB > > > > On 12/9/14, David J Taylor <david-tay...@blueyonder.co.uk> wrote: >> Thanks for pointing this out David, >> Compiling an new kernel was holding me back. I followed your instructions >> and >> everything works beautiful. The PI that is running the PPS timekeeping >> with >> >> NTP >> is serving as a VLF receiver as well. Taxing the poor CPU, but with >> kernel PPS support >> the NTP daemon has become way happier! (see attachment) >> >> 73, Frits W1FVB >> ============================================== >> >> Oh, yes! That's much better, Frits! Delighted to have helped! >> >> (Although it now shows up an hourly periodicity - any idea what might be >> causing that?) >> >> 73, >> David GM8ARV >> -- >> SatSignal Software - Quality software written to your requirements >> Web: http://www.satsignal.eu >> Email: david-tay...@blueyonder.co.uk >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > > -- > vbradio.wordpress.com > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
