[tor-bugs] #8240 [Tor]: Raise our guard rotation period

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#8240: Raise our guard rotation period
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 Reporter:  arma                                    |          Owner:                    
     Type:  defect                                  |         Status:  needs_review      
 Priority:  major                                   |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor                                     |        Version:                    
 Keywords:  tor-client needs-proposal 023-backport  |         Parent:                    
   Points:                                          |   Actualpoints:                    
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Comment(by arma):

 Replying to [comment:6 mikeperry]:
 > One way to improve this balancing problem might to adjust the Wxx
 weights such that the guard ones are dependent on how long you've had the
 guard flag vs this rotation parameter. If we had a curve to model the
 migration rate and metadata to record the Guard flag age to create points
 on this curve, this might not be too hard to do. I suppose a uniform
 migration rate might be as good an assumption as any...

 I agree that a uniform migration rate is as good as any (I assume by
 migration you mean from clients with the old behavior to clients with the
 new behavior). But further, don't forget that another factor here is new
 users showing up and picking guards. I guess we could assume that those
 are negligible (not true but hey, maybe it's close enough).

 I like the notion of changing the weights, but I feel like inflating the
 Bandwidth= weight is the wrong way to do it. I increasingly think we need
 a per-relay thing to say "how much of a guard it is".

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8240#comment:7>
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