[You sent that to 3 lists that I'm on. I'll reply here. I think your X axis is off. Your left edge is 1 second and you don't have data for that. peerstats is every 64 seconds. (unless you mucked with maxpoll) I'm guessing the software you used is assuming they are every second. There may be a command line parameter.
The normal ADEV is V shaped. The left slope is noise in the readings. The right slope is drift in the clock. That assumes you have a good reference clock, where good means much better than the DUT. In this case, there is no long term drift since ntpd is tracking GPS. You will probably get a traditional V if you disable ntpd. That will turn things inside out. Your DUT will be good (GPS) and your reference clock (PC) will drift. There is probably a simple way to do that but I can't think of it. I would try adding noselect to all the servers and refclocks, and add a localclock if you want to monitor that box from other systems. There is a slight step in the NMEA data at 1000 seconds and maybe a similar step in the PPS data at the right edge of the graph. I don't know what that means. -- These are my opinions. I hate spam. _______________________________________________ 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.
