Thanks Brian, I'll get it looked at. On 16/01/15 13:23, Brian Candler wrote: > Anybody else notice that ntp1.linx.net is jittery but ntp2.linx.net is > stable as a rock? > > $ ntpq -p > remote refid st t when poll reach delay offset > jitter > ============================================================================== > > ... > +ntp1.linx.net .PPS. 1 u 174 1024 377 4.677 0.289 36.181 > *ntp2.linx.net .GPS. 1 u 501 1024 377 5.631 0.006 0.253 > > This is despite the fact that the path to ntp2 appears to go through a > bunch more hops, and some FastEthernet interfaces. > > I'm not a LINX member so don't have an official way to report this, but > maybe someone here will pick it up? > > Regards, > > Brian Candler. > > $ sudo traceroute -I ntp1.linx.net > traceroute to ntp1.linx.net (195.66.241.3), 30 hops max, 60 byte packets > ... > 3 ae-125-3511.edge5.london1.Level3.net (4.69.166.41) 4.415 ms 4.425 > ms 4.424 ms > 4 ae-125-3511.edge5.london1.Level3.net (4.69.166.41) 4.423 ms 4.422 > ms 4.434 ms > 5 DAISY-GROUP.edge5.London1.Level3.net (212.187.138.166) 4.878 ms > 4.896 ms 4.975 ms > 6 te0-2-0.ar06.tn5.bb.daisyplc.net (62.72.137.182) 4.935 ms 4.927 ms > 4.898 ms > 7 te0-2-0.ar06.tn5.bb.daisyplc.net (62.72.137.182) 4.588 ms 4.617 ms > 4.593 ms > 8 ge0-3.tr5.linx.net (195.66.248.33) 4.686 ms 4.882 ms 4.885 ms > 9 ntp1.linx.net (195.66.241.3) 4.873 ms 4.856 ms 4.844 ms > > $ sudo traceroute -I ntp2.linx.net > traceroute to ntp2.linx.net (195.66.241.10), 30 hops max, 60 byte packets > ... > 3 ae-125-3511.edge5.london1.Level3.net (4.69.166.41) 4.436 ms 4.448 > ms 4.447 ms > 4 ae-125-3511.edge5.london1.Level3.net (4.69.166.41) 4.443 ms 4.440 > ms 4.452 ms > 5 DAISY-GROUP.edge5.London1.Level3.net (212.187.138.166) 4.876 ms > 4.900 ms 5.096 ms > 6 te0-2-0.ar06.tn5.bb.daisyplc.net (62.72.137.182) 4.877 ms 4.803 ms > 4.751 ms > 7 te0-2-0.ar06.tn5.bb.daisyplc.net (62.72.137.182) 4.553 ms 4.606 ms > 4.607 ms > 8 ge0-3.tr5.linx.net (195.66.248.33) 4.630 ms 4.648 ms 4.729 ms > 9 fe2-1-502.tr2.linx.net (195.66.249.9) 4.680 ms 4.642 ms 4.635 ms > 10 fe6-1.tr1.linx.net (195.66.248.57) 4.981 ms 5.086 ms 5.099 ms > 11 ge0-3-101.tr6.linx.net (195.66.248.13) 5.444 ms 5.274 ms 5.124 ms > 12 fe6-0.tr3.linx.net (195.66.248.180) 5.332 ms 5.272 ms 5.363 ms > 13 ntp2.linx.net (195.66.241.10) 5.449 ms 5.448 ms 5.466 ms > >
John -- John Souter, CEO, London Internet Exchange Ltd Trinity Court, Trinity Street, Peterborough PE1 1DA. Registered 3137929 in England. Mobile: +44-7711-492389 https://www.linx.net/ "Working for the Internet" sip:[email protected]
