On 18 November 2016 at 09:21, Martin Burnicki <[email protected]> wrote: > > Just a few thoughts regarding NTP vs. PTP: >
Oh dear... OK, before this snowballs into a bigger discussion this was not meant to be: My original post was _not_ about PTP vs. NTP, it was about the APU2 boards and hardware timestamping. My only point was to highlight the following: 1 This board has got exposed test pads for lots of 1PPS / frequency in / out pins tied to timestamping hardware making it very easy to tap into them. This is a great opportunity which begs to be exploited. 2. With a stable 1PPS from GPS or another source, this board can serve nanosecond time, and that includes NTP in hardware, because the Intel NICs can timestamp every packet, not just PTP. And yes, this mostly matters for LAN. I am fully aware of what you listed. NTP is just a different beast and silicon vendors jumped onto PTP, and PTP inherently lacks the sophisticated quorum and trust mechanisms NTP has, and yes, those are key items on the P1588 WG agenda. Thanks, Wojciech -- - Wojciech Owczarek _______________________________________________ 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.
