[tor-bugs] #4489 [Tor Directory Authority]: AuthDirFastGuarantee is too low, harming performance

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#4489: AuthDirFastGuarantee is too low, harming performance
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 Reporter:  arma                       |          Owner:                    
     Type:  defect                     |         Status:  needs_review      
 Priority:  normal                     |      Milestone:  Tor: 0.2.2.x-final
Component:  Tor Directory Authority    |        Version:                    
 Keywords:  performance loadbalancing  |         Parent:                    
   Points:                             |   Actualpoints:                    
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Comment(by mikeperry):

 My thinking is that in an ideal situation, we'd assign Fast based solely
 on the top 7/8 measured consensus values, setting this value high enough
 to not normally apply (at let's say, 90% of the current Fast capacity?).
 This would keep the bulk of the network bandwidth permanent in the face of
 the attack, but not have this artificial minimum dragging us down most of
 the time.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4489#comment:7>
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