On Mon, Jan 07, 2019 at 03:11:32PM +0000, LeBlanc, Daniel James wrote: > Hi Miroslav. > > The requirement that we are trying to meet is " Time accuracy must be within > 1 ms of true time.", as described in Section 5.18 of > https://www.nena.org/resource/resmgr/standards/NENA-STA-010.2_i3_Architectu.pdf.
Interesting. > I am currently connected to the NRC Internet-accessible time servers from our > lab environment. I am so close to meeting the spec (~1.3ms reported root > dispersion) that I thought I would reach out to the experts to see if there > was some adjustment that I might try. :-) To me it sounds like you will need your own NTP server with a HW reference clock (e.g. GPS). > > I am running chrony within a virtual environment (VM) so have disabled > rtcsync and enabled rtcfile within the .conf file. I will look at reducing > the maxclockerror and increasing the minsamples setting. Any additional > items to consider would be appreciated! I wouldn't recommend doing that unless you have verified the stability of the clock, e.g. by comparing it to a reference clock. In any case, that can only reduce the local peer dispersion. If most of the root distance is from the network delay, it won't help much. -- Miroslav Lichvar -- To unsubscribe email [email protected] with "unsubscribe" in the subject. For help email [email protected] with "help" in the subject. Trouble? Email [email protected].
