[tor-bugs] #6135 [Tor Client]: Tune + tighten path bias parameters

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#6135: Tune + tighten path bias parameters
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 Reporter:  mikeperry    |          Owner:     
     Type:  enhancement  |         Status:  new
 Priority:  major        |      Milestone:     
Component:  Tor Client   |        Version:     
 Keywords:               |         Parent:     
   Points:               |   Actualpoints:     
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Changes (by mikeperry):

 * cc: nickm, arma (added)


Comment:

 Ok, I did some work to get closer to a solution here. See
 https://gitweb.torproject.org/torflow.git/tree/HEAD:/CircuitAnalysis/PathBias.
 In particular,
 https://gitweb.torproject.org/torflow.git/blob/HEAD:/CircuitAnalysis/PathBias/observations.txt
 and
 https://gitweb.torproject.org/torflow.git/blob_plain/HEAD:/CircuitAnalysis/PathBias/results.txt

 Here's the 4 line summary:
 0. Parameter choice is blocked on getting a good measure of the ambient
 success rate.
 1. We should transform PATH_BIAS_SCALE_FACTOR into a percent, and make it
 high. Like 95.
 2. We might want to use a separate, lower PATH_BIAS_PCT before
 SCALE_THRESHOLD.
 3. After SCALE_THRESHOLD, PATH_BIAS_PCT can be pretty high for notice and
 warn

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6135#comment:1>
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