[tor-bugs] #4146 [Analysis]: How many preemptive circuits does a normal client need?

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#4146: How many preemptive circuits does a normal client need?
----------------------+-----------------------------------------------------
 Reporter:  arma      |          Owner:     
     Type:  task      |         Status:  new
 Priority:  normal    |      Milestone:     
Component:  Analysis  |        Version:     
 Keywords:            |         Parent:     
   Points:            |   Actualpoints:     
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 On startup every Tor client makes two external circuits for port 80, and
 two internal circuits.

 How many of these typically get used (vs wasted)?

 Jake was unhappy at the signature created by a Tor client starting up (TLS
 connect to guards, do four little back-and-forth dances each of which
 represents building a circuit).

 Do most users never use the preemptive internal circuits? Is 1 direct
 circuit good enough to start with? Should we try to remember something
 about past usage patterns and put it in the state file?

 I can see a different use case for TBB (where the human just started it
 and presumably they plan to use it) than for, say, Debian where it starts
 on boot.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4146>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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