[tor-bugs] #3444 [Torflow]: Bw auths should group nodes by ratio (stream capacity), not consensus bw

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#3444: Bw auths should group nodes by ratio (stream capacity), not consensus bw
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 Reporter:  mikeperry    |          Owner:  mikeperry
     Type:  enhancement  |         Status:  new      
 Priority:  major        |      Milestone:           
Component:  Torflow      |        Version:           
 Keywords:               |         Parent:           
   Points:               |   Actualpoints:           
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 Right now, the bw auths group nodes into "slices" of 50 nodes of similar
 consensus bandwidth. This is probably not the optimal grouping. They
 should instead be grouped by stream capacity. This is also equivalent to
 grouping them by the ratio of the consensus bandwidth to the descriptor
 bandwidth.

 This would be implemented as a PathSupport.RatioPercentRestriction. We
 should then be able to easily switch from PercentileRestrictions to
 RatioPercentileRestrictions without too much issue.

 This will result in faster scans and more accurate measurements.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3444>
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