On 2014-04-26, Joe Gwinn <[email protected]> wrote: > In article ><8188ba2b01fb534a99c03d79c62ce1d80982f...@uusnwe3a.global.utcmail.com>, > Montgomery, Peter BIS <[email protected]> wrote: > >> I am new to NTP. But I have a quick question that I need to answer soon. >> >> I would like to know whether NTP can sync between a client and a server >> within 1ms if the client and server are Linux applications on a simple local >> network ( less than 10 nodes). > > Not reliably, for a million reasons. A better rule is 10 milliseconds, > and even that requires work and care.
Well, since I have 8 machines that reliably sync from one GPS PPS driven machine (all using chrony) and they get time reliability of about 10microseconds, your experience seems a bit different than mine. And how did you determine that you were only getting 10ms. As I said, you cannot conclude that by looking at the offsets reported by ntpd. > > The most reliable approach is an IRIG network. Or put a gps pps receiver onto each machine. > > But you need to describe your problem and constraints before people can > give better answers. Agreed. > > Joe Gwinn _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
