Dave,
I am sure that the algorithm is great, really. It is just that I can't figure out from RFC 1305 how it gets calculated: "which can be calculated in a manner similar to the filter dispersion described previously". My first attempt was too similar and I ran the same data points through the calculation but with a different "w" but that always gives a result larger than the filter dispersion since ¾ is always larger than ½. :-) That is obviously not right. I am suspicious of a particular implementation, especially since one problem has been found already. I want to calculate the dispersion value independently. Regards, David R. >Russel, >he detailed calculations are in the refeence implementation document on >the NTP project page and in the NTPv4 Internet Draft. However, if the >select dispersion is excessive, it isn't because the algorithm is in >error; it's because you really do have large differences in the server >population. >Dave >Russell, David wrote: >I am trying to validate an NTP implementation that is exhibiting a lot >of churn in the cluster algorithm. Unfortunately I don't think that I >been able to properly calculate the select dispersion based on RFC1305. > > >Can anyone refer me to a more detailed description of the calculations >or even better some example calculations with test data? > > > >Regards, > > > >David > > > > David R. Russell CCIE #5751 Dow Jones and Company GTS - Performance Engineering Group Office 609-520-4458 Cell 610-909-1129 [email protected] _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
