[metrics-bugs] #22235 [Metrics/Metrics website]: Add new graph showing the average onion service descriptor count per directory

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#22235: Add new graph showing the average onion service descriptor count per
directory
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 Reporter:  karsten                  |          Owner:  metrics-team
     Type:  enhancement              |         Status:  new
 Priority:  Medium                   |      Milestone:
Component:  Metrics/Metrics website  |        Version:
 Severity:  Normal                   |     Resolution:
 Keywords:                           |  Actual Points:
Parent ID:                           |         Points:
 Reviewer:                           |        Sponsor:
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Comment (by karsten):

 Heh, yes, this graph should start in 2015.  I made all graphs for the same
 time period.  If we put this graph on Tor Metrics, the time period would
 certainly be configurable.  I'm updating the graph anyway.

 [[Image(hidserv-descs-per-hsdir.2.png)]]

 Regarding your question about the unit, in retrospect, we might compute
 this number directly from reported hidserv statistics.  After all, relays
 report to us how many distinct onion services they have seen throughout
 the day.  No need to extrapolate that to the network total and divide by
 the number of HSDirs.  We could compute this average directly.  That would
 require some more code, but the result would be more accurate.  I think.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22235#comment:4>
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