Terje Mathisen <terje.mathi...@tmsw.no> wrote: > Rob wrote: >> Terje Mathisen <terje.mathi...@tmsw.no> wrote: >>> http://linuxgizmos.com/tiny-fanless-mini-pc-runs-linux-on-quad-core-amd-soc/ >>> >>> This little guy starts at $129 and includes a serial port which should >>> make it trivial to attach a Sure GPS board. >>> >>> With a dual or quad 64-bit CPU, both SATA and SD storage connectors and >>> versions that support multiple Gbit/s Ethernet ports, it would seem to >>> be a nice NTPD startum 1 server. >> >> First I would verify if it really runs to microsecond accuracy, at least >> when you require that. My experience with small computers running NTP >> synced to PPS that they have a tendency to be 1-3 magnitudes worse at >> timing stability, probably because of the lack of a sufficiently fast >> and accurate timing counter. > > Did you check the link? > > This is a full 64-bit dual/quad core x86-64 PC!
Yes I did. That is why I wrote "First I would verify", because in this case it could well be better than the ATOM or ARM CPU often present on small boards. >> Of course, it could still be good enough when you want to use it as a >> network time server. It wasn't good enough for my co-channeling software >> that requires the clock to be accurate within a few microseconds. >> Intel CPU driven 64-bit PC systems have no problem with that. > > AMD instead of Intel, but yes. Connect a GPS, install ntpd-4.2.8 and see if you can get those 0.000xx values for offset and jitter... when yes, it would certainly be attractive for use in our project as well. _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
