[tor-bugs] #21206 [Core Tor/Tor]: Measure client up/down bandwidth for directory requests, split by type

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#21206: Measure client up/down bandwidth for directory requests, split by type
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     Reporter:  nickm         |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.3.1.x-final
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  sponsor4
Actual Points:                |  Parent ID:  #21205
       Points:  3             |   Reviewer:
      Sponsor:                |
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 See parent ticket for context.

 We need a way to measure, over time, split up by type of directory
 request, how much bandwidth a client uses for requests and for responses.

 We should include both directory lookups that are successful and those
 that are not.

 We should, if possible, measure this with and without circuit overhead.
 But not if it's too hard.

 We should, if possible, count failed circuits that are opened only for
 directory requests. But not if it's too hard.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21206>
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