by wkitty42 » Sun Dec 31, 2017 1:24 pm
planeTalk wrote in Sat Dec 30, 2017 6:07 pm:How do I tell how 'near' a server is to me? Measure the time of a ping? I'd guess that physical nearness and bandwidth of connection might correlate poorly.
ping is near useless for any real diagnosis... it only tells you the roundtrip time... traceroute, on the other hand, tells you the path with the times between each hop... as for the distance, from what i've seen, many systems use geolocation instead of number of hops...
planeTalk wrote in Sat Dec 30, 2017 6:07 pm:Is server selection by roundrobin how FG normally pulls in data via Terrasync?
the selection is made for each execution, IIRC... once selected, that is the server used for the entire session... if you exit and reload FG, it may pick another scenery mirror...
planeTalk wrote in Sat Dec 30, 2017 6:07 pm:This is then over-ridden by the option --prop:/sim/terrasync/http-server=http://flightgear.sourceforge.net/scenery, right?
yes, that eliminates the DNS NAPTR query and decision making...
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."