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<div class="moz-cite-prefix">What I would be interested in is the
maximum and average time a PC92 type message traverses the
network. One is never going to get a granularity of less than one
second, 'cos the time (as in PC92^RW3XA-8^<b><font color="#ff0000">135</font></b>^...)
is in seconds. And there are some issues with people not syncing
their time, not to mention to remember that the time rolls over
back to 0 at midnight UTC. Oh and, sometimes, the time value could
be 135.1 or 135.7 etc which only indicates that more than one
message was originated in that second from that node. <br>
<br>
An extra little project for you :-) Although, arguably it could be
something that is maintained by each node and can be inspected (by
the sysop?) to (maybe) quash this annoying habit (to me at least)
of users connecting to as many nodes as possible simply to "get an
edge".<br>
<br>
73 Dirk G1TLH<br>
<br>
<br>
On 02/12/2024 17:59, Kin via Dxspider-support wrote:<br>
</div>
<blockquote type="cite"
cite="mid:046501db44e3$e22e9450$a68bbcf0$@cronux.net">
<pre wrap="" class="moz-quote-pre">Hi,
I was curious to know what would be the largest distance (hops) that could
occur in our network with the current topology.
I started with a graph that you can see here:
<a class="moz-txt-link-freetext" href="http://clustermap.cronux.net/route_finder.html">http://clustermap.cronux.net/route_finder.html</a> , and I ended up with a few
lines of code :(
>From the data obtained from the PC92C sentences, the following data can be
inferred:
Hops Quantity Nodes
---- -------- -----
1 1782 563
2 20003 561
3 57289 561
4 54012 561
5 19279 561
6 4001 539
7 639 256
8 67 49
9 9 7
The 'Quantity' column counts pairs of nodes that have a route with N hops.
The 'Nodes' column counts unique nodes involved in any path with N hops.
It represents the minimum hops between nodes (all to all).
It is based on a study of 563 nodes.
For each node, the distance to all other nodes has been calculated using BFS
(Breadth First Search).
It has to be said, that it is possible (for sure) that there are other
routes and nodes that could not be used in this study. The reason for this
is the lack of information (existence) about them or their neighbouring
nodes. Among them are ARCluster, DXNet, CLX, CCCluster, especially those
nodes that are not directly linked to nodes using PC9x.
Not even 10 hops are necessary to reach a node.
We could infer that with 4 links on average, the 563 nodes would be at a
maximum distance of 5 hops. [SUM(i=1 to 5) f(i)]
Makes you think, doesn't it?
73 de Kin EA3CV
EA3CV-2 dxcluster.cronux.net 7300
<a class="moz-txt-link-freetext" href="http://clustermap.cronux.net/map.html">http://clustermap.cronux.net/map.html</a>
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</pre>
</blockquote>
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