Thanks I'll give that a try. On Jan 31, 2008 7:58 AM, Jeff Mock <[EMAIL PROTECTED]> wrote:
> There's probably a good NTP hacker hanging around on this list, but the > best place to answer your question is probably the NTP hackers mailing > list: > > https://lists.ntp.org/mailman/listinfo > > jeff > > Maciej Żenczykowski wrote: > > Hey folks, > > > > I just joined your email list to inquire about something which some of > you > > may have some knowledge of... > > > > I'm developing some code (for linux with an ntp server/client running), > for > > which I would like to verify that it handles positive (and negative) > > leap seconds correctly (I need good time stamps for cross-machine > > synchronization). > > Obviously this is hard to do in practice due to the extreme rarity of > these > > events. > > (even more so, considering my home servers running ntp apparently for > some > > reason saw leap seconds at the end of 2007...) > > I've thought about switching to djb's suggestion of keeping a non-posix > time > > zone on the machines in question, but this > > is not feasible because of existing legacy code... > > > > Thus I am curious to know if someone somewhere has perhaps set up fake > ntp > > servers which regularly insert and delete > > leap seconds (ie. reset their time every couple days and randomly > simulate a > > positive or negative leap second 2-3 days > > down the line). > > > > If not, does anyone know how to go about setting up such a fake ntp > server > > for testing purposes? > > > > Also, is there a known good list of ntp servers which are known to > provide > > correct leap second announcements (as mentioned above, > > the stratum 1s at least 2 of my machines were synched to apparently > > broadcast a leap second at the end of 2008). > > I've heard horror stories about time synchronization going haywire the > last > > time there was a leap second and some upstream > > ntp servers announced leap-seconds and others didn't (the time > > mis-synchronization brought down the application)... > > > > Cheers, > > Maciej. > > _______________________________________________ > > 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. > > > > > _______________________________________________ > 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. _______________________________________________ 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.
