[tor-bugs] #13929 [Tor]: Increase Authority reachability testing rate with low TestingAuthDirTimeToLearnReachability

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#13929: Increase Authority reachability testing rate with low
TestingAuthDirTimeToLearnReachability
------------------------+--------------------------------------
     Reporter:  teor    |      Owner:  teor
         Type:  defect  |     Status:  needs_revision
     Priority:  normal  |  Milestone:
    Component:  Tor     |    Version:  Tor: 0.2.6.1-alpha
   Resolution:          |   Keywords:  tor-auth testing chutney
Actual Points:          |  Parent ID:  #13718
       Points:          |
------------------------+--------------------------------------
Changes (by teor):

 * status:  needs_review => needs_revision


Comment:

 I am now revising #13929 & #13928 separately from #13718, as this is
 particularly authority-related.

 These changes are not required for the fast bootstrap case (10s) in
 #13718. They might be required for the comprehensive bootstrap case (30s)
 when we're not using `TestingDirAuthVoteGuard * TestingDirAuthVoteExit *`.
 (Although I really need to look into the guard case more.)

 This needs some tests (check it covers all cases), and therefore probably
 needs some refactoring to be more testable.

 The WIP branch for '''tor''' is:

 '''Bugs:''' #13929, #13928 (in that order)
 '''Branch:''' faster-permuted-reachability
 '''Repository:''' ​​​​​​​https://github.com/teor2345/tor.git

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13929#comment:5>
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