On Wed, Oct 14, 2009 at 03:59:37PM -0700, PGNet Dev wrote: > >> just run sntp via cron every hour. > > > > Danger, bad, evil and multiple varieties of not good. running sntp every > > hour > > on the whatever is considered very not good. > > why's that?
Because of the evil it does to the NTP server. Remember, everyone's clock is synchronized, so when you and everyone else does that, that creates a /huge/ burst for the NTP server. sntp via cron will be synchronized to the minute change (and, quite likely, at some "nice" round number of minutes). ntpd is not synchronized, and the packets should be spread evenly. There is a big difference between 10 packets per second spaced evenly, and 10 packets per second (averaged over the hour) that all come at 0, 15, 30, or 45 minutes after the hour, on the dot. -- _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
