[EMAIL PROTECTED] (maxime louvel) writes: >Hi,
>- my network contains only one switch, and all the node are in the same >room. >Thus I don't think cabling is a problem. I still have to check the latency >of the switch. >- I can't use a GPS or other material. I though I wouldn't need any because >I don't won't a great accuracy with the real time, just between my nodes. I >also think it would have been easier and better to have a common high >precision time source (GPS)... But I can't afford that ;) A garmin 18LVM is about $60. That is all you need plus a bit of soldering so as to put on the approriate plugs. >Do you have an explanation of the so different performances observed in your >NTP synchronisations ? Nope. All I can tell you is what I see. Maybe we have better switches here. >- I'm going to look at chrony, which at first glance seems usable in my >case. >- I am already using the -x option, to be certain to avoid any step. >Maxime >On Wed, Apr 23, 2008 at 2:10 AM, Unruh <[EMAIL PROTECTED]> wrote: >> Steve Kostecke <[EMAIL PROTECTED]> writes: >> >> >On 2008-04-22, Unruh <[EMAIL PROTECTED]> wrote: >> >> >> Steve Kostecke <[EMAIL PROTECTED]> writes: >> >> >> >> ??? In my experience, on a Lan ntpd shows an internode offset of about >> >> 5-15 usec, and on the internet (ADSL) an offset of about 200usec. >> >> >Here's an aggregated plot of the node offsets on my LAN over the last 24 >> >hours. I see +3/-5 milliseconds, not anything near 5-15 microseconds. >> >> > >> http://support.ntp.org/bin/viewfile/Users/SteveKostecke?rev=1;filename=typical_aggregate_lan_offsets.png >> >> I agree those are pretty bad. HOw are they hooked up? It looks like one of >> the hops is via a telephone modem! >> >> See www.theory.physics/chrony/chrony.html >> Mind you those are running with maxpoll 7 not maxpoll 10 (Its my lan and >> ntp server, and I'll do what I want to.) >> >> >> >-- >> >Steve Kostecke <[EMAIL PROTECTED]> >> >NTP Public Services Project - http://support.ntp.org/ >> >> _______________________________________________ >> questions mailing list >> [email protected] >> https://lists.ntp.org/mailman/listinfo/questions >> >-- >Maxime Louvel >0044 7964 5555 80 >43 Allen road >Whitemore reans >WV60AW Wolverhampton >United Kingdom _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
