[tor-bugs] #7912 [Tor]: Cells that don't get inserted into cell queues can clog connection flushing

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#7912: Cells that don't get inserted into cell queues can clog connection flushing
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 Reporter:  asn                     |          Owner:                    
     Type:  defect                  |         Status:  needs_revision    
 Priority:  major                   |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor                     |        Version:                    
 Keywords:  tor-relay 023-backport  |         Parent:                    
   Points:                          |   Actualpoints:                    
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Changes (by nickm):

  * status:  needs_review => needs_revision


Comment:

 Replying to [comment:31 andrea]:
 > Maybe an easy way to spot *if* there's an issue meriting further
 investigation would be to count deletes when they enter the queue (i.e.,
 at the earliest point where this patch series changes any of the logic)
 and then when they're sent, and see if differences between the counters
 stay in a bounded range (i.e., the size of the queue under equilibrium
 conditions) or increase as the node stays running longer?

 Seems likely to work out. You'd want a per-connection counter, I think,
 since if a connection dies, we won't actually consume any destroys.  I'll
 implement something like that, then merge.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7912#comment:32>
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