[tor-bugs] #13674 [Onionoo]: Remove advertised bandwidth and advertised bandwidth fraction graphs from weights document

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#13674: Remove advertised bandwidth and advertised bandwidth fraction graphs from
weights document
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 Reporter:  karsten      |          Owner:
     Type:  enhancement  |         Status:  new
 Priority:  normal       |      Milestone:
Component:  Onionoo      |        Version:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
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 Onionoo's weights documents contain two graphs for advertised bandwidth
 and advertised bandwidth fraction that I'd like to get rid of.

 The reason is very similar to the reason stated in #13673 for removing the
 `"advertised_bandwidth_fraction"` field from details documents:
 maintaining these graphs increases code complexity which leads to errors
 and makes it harder to implement new features.  Further, initializing a
 new Onionoo instance from descriptor archives becomes prohibitively
 expensive with these two graphs.

 It looks like both Atlas and Globe show the advertised bandwidth fraction
 graph, but not the advertised bandwidth graph.  In both cases, taking out
 this graph and leaving in consensus weight fraction and guard/middle/exit
 probability wouldn't hurt user experience too much.

 In fact, little-t-tor doesn't depend on (self-reported) advertised
 bandwidth for anything, because relays have been lying about that value in
 the past.  So, we shouldn't display a graph with fractions if it's known
 that network totals may be inaccurate because of liars.

 In the future, we might provide new bandwidth graphs for configured
 bandwidth rate and burst, observed bandwidth, and advertised bandwidth
 (but not fraction).  Those can all be drawn from server descriptors
 without having to combining them with consensuses.  Adding these graphs is
 not trivial and deserves a new ticket.  I'm just mentioning this idea
 here, because it seems relevant.

 I'll leave this ticket open for discussion until beginning of next week.
 If there are no convincing arguments for keeping these two graphs, I'll
 remove them.  They're optional, so there's no need for a month-long heads-
 up here.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13674>
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