Re: [tor-bugs] #9946 [Tor]: Bootstrapping Tor client hangs up on its chosen guards

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

#9946: Bootstrapping Tor client hangs up on its chosen guards
------------------------+--------------------------------
     Reporter:  arma    |      Owner:
         Type:  defect  |     Status:  needs_review
     Priority:  normal  |  Milestone:  Tor: 0.2.4.x-final
    Component:  Tor     |    Version:
   Resolution:          |   Keywords:  tor-client
Actual Points:          |  Parent ID:
       Points:          |
------------------------+--------------------------------

Comment (by arma):

 Yes -- all the guards are marked made-contact, so we don't abandon them
 when we connect to them.

 That said, there are still ways to improve the situation here.

 A) if one of our three guards is a bust, it will take 120 seconds for
 requests to it to time out, and even if the other 2 guards are working
 great, that typically isn't enough for enough to get to 80%. So there will
 remain cases where we wait 2 minutes to bootstrap -- and maybe this patch
 even increases the chance of those since any of the three guards can cause
 them.

 B) Our choice of how many microdescs to fetch per directory request is
 really totally irrational since the network has grown so much since we
 chose those parameters.
 {{{
 Oct 11 13:32:44.779 [info] launch_descriptor_downloads(): Launching 50
 requests for 4574 microdescs, 92 at a time
 }}}
 Seriously, we're making 50 requests and spreading them over 3 guards? I
 guess it's nice that we can get partial answers, but generally partial
 answers don't help us.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9946#comment:11>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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