On 2011-04-19, David Lord <[email protected]> wrote: > David J Taylor wrote: >> "unruh" <[email protected]> wrote in message >> news:[email protected]... >> [] >>> Well, I think someone other than the current maintainers will have to >>> port it to windows. Since windows timekeeping is not the worlds best >>> anyway, it is probably true that the extra accuracy of chrony is >>> unnecessary. It does have a command line option "like ntpq -p" >>> provided by chronyc (depending on what you mean by "like"). >>> What MRTG is I do not know. >>> >>> If you are happy with ntpd, by allmeans stay with it. >> >> A pity that chrony will not be offered for Windows, at least for tests >> to see whether it lives up to its claims. There are times when a more >> rapid convergence would be welcome, such as the reboot of PC Molde >> around 13:30 yesterday: >> >> http://www.satsignal.eu/mrtg/molde_ntp-b.html >> >> MRTG is a standard logging tool for network I/O which uses SNMP to >> produce the graphs I have quoted here many times for network throughput >> and timekeeping: >> >> http://www.satsignal.eu/mrtg/performance_network.php >> http://www.satsignal.eu/mrtg/performance_ntp.php >> >> I've written how to extend MRTG to monitor NTP timekeeping, and various >> other parameters such as disk space and temperature here: >> >> http://www.satsignal.eu/ntp/NTPandMRTG.html >> http://www.satsignal.eu/mrtg/performance_howto.php >> >> From chronyc I would need to be able to use a simple Perl script to >> extract the numbers to be plotted - such as the Offset in the graphs >> above. An easy job if the format is standardised and machine readable. > > I based my script on yours for ntp but changed from using a > linear axis to log. I first used chrony on NetBSD when on > dialup with demon and later for a while when on broadband. > When I first compared chrony with ntpd there was no contest > but more recent experiments with chrony had periods of > severe instability much worse than ntpd.
More recent means what? What version of chrony? (there was a bug found in the past two weeks that was introduces a few months ago which did result in instability) > > P4X2666 with chrony ><http://www.lordynet.org.uk/mrtg/stats/> Not at all sure what I am supposed to see. I have no idea what the graph axes represent? What is 1.1k ? Note that you can see my offsets with chrony on my web page. The network problems really do cause difficulty, but the offsets in general are very small -- 10usec over the network. > > Current stats all with ntpd. ><http://www.lordynet.org.uk/mrtg/stats/ntp/> > > > David > _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
