[tor-bugs] #25824 [Core Tor/Tor]: Integrate circuit max_cell_queue_size killer with DoS heartbeats

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#25824: Integrate circuit max_cell_queue_size killer with DoS heartbeats
------------------------------+--------------------
     Reporter:  arma          |      Owner:  (none)
         Type:  enhancement   |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------
 We just merged #25226 so relays can kill circuits that queue up too many
 cells.

 But we're nervous about picking a threshold that isn't super high, since
 there's no feedback about whether relays are hitting this event in the
 wild: the logs are protocol-warn, so nobody, not us not them, will even
 know if it happens.

 teor suggested that we could tie the circuit killing into the DoS
 heartbeat logs. Something like "and I killed x circuits that had too many
 cells queued".

 This sounds to me like a great idea.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25824>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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