Hi That *assumes* that NTP is installed on the laptop.
Bob > On Jan 13, 2017, at 3:45 PM, Chris Albertson <[email protected]> > wrote: > > Short answer: See man page for ntpq > > Longer... > > First run NTP then after some time (15 minute to an hour) at the command > line time type "ntpq -p" > > "ntpq" will query NTP for timing statistics. It will report the average > delay between the local computer and the set of reference clocks (other > servers) that NTP is connected to. Along with the average delay you get > variation in that delay (std dev?) Note the if NTP can calculate the > delay, it has already compensated for it. It is only the uncertainty of > the compensation that matters, hence the need to report the variation. > > The data shows the total delay and variation over the network and the > reference clocks might be thousands of miles away. So you might want to > run one on say your wifi router or a local computer with hardwire > connection to the router then you'd see the effect of only your wifi. > > > > On Fri, Jan 13, 2017 at 12:35 PM, Bob Camp <[email protected]> wrote: > >> Hi >> >> What standard protocol would you recommend I run from the command line on >> my computer >> to get a quick estimate of the timing lag and variablilty on my >> particular WiFi connection? >> >> Bob >> >>> On Jan 13, 2017, at 3:25 PM, John Hawkinson <[email protected]> wrote: >>> >>> Can we please stop talking about pings? >>> >>> Bob Camp <[email protected]> wrote on Fri, 13 Jan 2017 >>> at 15:12:38 -0500 in <[email protected]>: >>> >>>> I’m sure you are right about the response time. Right now the >>>> variation is running almost 3 ms at one sigma on a ping so there is >>>> a lot to do simply to get the accuracy anywhere near 1 us. >>> >> >> _______________________________________________ >> 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. >> > > > > -- > > Chris Albertson > Redondo Beach, California > _______________________________________________ > 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. _______________________________________________ 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.
