[tor-bugs] #26171 [Metrics/Statistics]: Explain which cells are counted for onion service traffic graphs

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#26171: Explain which cells are counted for onion service traffic graphs
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     Reporter:  teor                |      Owner:  metrics-team
         Type:  defect              |     Status:  new
     Priority:  Medium              |  Milestone:
    Component:  Metrics/Statistics  |    Version:
     Severity:  Normal              |   Keywords:
Actual Points:                      |  Parent ID:
       Points:                      |   Reviewer:
      Sponsor:                      |
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 I can't work out what is being measured on the onion service traffic
 graph:
 https://metrics.torproject.org/hidserv-rend-relayed-cells.html

 Does it include:
 * cells sent from rendezvous points to clients?
 * cells sent from rendezvous points to services?
 * cells sent to rendezvous points from clients?
 * cells sent to rendezvous points from services?

 Also, the related blog post says:
 "A related statistic here is "How much of the Tor network is actually
 hidden service usage?". There are two different ways to answer this
 question…"
 https://blog.torproject.org/some-statistics-about-onions

 Does the graph try to answer this question?
 Or is it just measuring rendezvous point traffic without counting the
 traffic on the relays on rest of the circuit?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26171>
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