[tor-bugs] #8273 [Tor]: Set flag thresholds and flags based on measured bandwidth

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#8273: Set flag thresholds and flags based on measured bandwidth
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 Reporter:  nickm     |          Owner:                    
     Type:  defect    |         Status:  needs_revision    
 Priority:  critical  |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor       |        Version:                    
 Keywords:  tor-auth  |         Parent:                    
   Points:            |   Actualpoints:                    
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Comment(by mikeperry):

 One problem with my suggestion vs Nick's is that mine might flap. I just
 came down with a cold, so my brain might be misfiring, but here's what I
 think can happen: If you're scanning Fast or Unmeasured, you see a slow
 unmeasured node and then scan it. If it turns out to be not-Fast, then the
 *next* time around, you don't measure it, and it becomes unmeasured again,
 at which point you measure it.

 It's not as bad as never measuring, of course. But I wonder if it will be
 a substantial problem? My guess is "Probably not", *except* for the fact
 that this means there will be a *lot* of non-Fast nodes at that 1.0 ratio
 that we assign to Unmeasured nodes. This could mess up the measurement of
 nodes that are actually perfectly average (arithmetic mean) in terms of
 measuring them, because they will now be more likely to be paired with
 slow nodes that fell out of the Fast status and lost their measured flag.

 So maybe an even simpler fix of scanning non-Fast nodes is the best one?
 K.I.S.S.? The one thing I would suggest if we decide to go that route is
 to perhaps make an extra entry in the data/bwfiles URL list. (Where the
 hell is this file btw? It's not in my git checkout? Did we forget to add
 it?)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8273#comment:12>
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