David Taylor <[email protected]> wrote: > Rick, judge for yourself. I made a simple comparison between pure LAN > sync, and PPS over USB sync here:
> http://www.satsignal.eu/ntp/NTP-on-Windows-serial-port.html#usb Thanks. > The minimum average jitter value was 110 - 140 µs with the LAN > connection, and 45 µs with the USB/PPS connection. So a USB/PPS > connection may be better than a LAN connection, and most likely much > better than a WAN or Wi-Fi connection. Direct serial/PPS is much > better than USB, though. WRT LAN, I'll refer back to previous discussions about interrupt coalescing/avoidance algorithms for LAN cards. I think unruh did some experimentation there. rick -- No need to believe in either side, or any side. There is no cause. There's only yourself. The belief is in your own precision. - Joubert these opinions are mine, all mine; HP might not want them anyway... :) feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH... _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
