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Re: [tor-bugs] #1854 [Analysis]: Investigate raising the minimum bandwidth for getting the Fast flag



#1854: Investigate raising the minimum bandwidth for getting the Fast flag
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 Reporter:  arma                       |          Owner:  arma    
     Type:  task                       |         Status:  assigned
 Priority:  normal                     |      Milestone:          
Component:  Analysis                   |        Version:          
 Keywords:  performance loadbalancing  |         Parent:          
   Points:                             |   Actualpoints:          
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Comment(by arma):

 Replying to [comment:12 karsten]:
 > Sounds like we want #6232 graphs with the minimum bandwidth to keep
 relays in the consensus on the X axis.  For example, a graph similar to
 https://trac.torproject.org/projects/tor/attachment/ticket/6232/entropy-
 august.png would have its blue lines decreasing steadily, because we're
 taking away relays, but the red lines would stay on the same level and
 only drop in the last third or so, because we start taking away relays
 from the slowest ones.
 >
 > Is that what you have in mind here?

 Sounds plausible. One nice way of looking at it might be: what's the
 highest bandwidth cutoff such that the red lines in your graph lose 1% or
 less? Then the same question for 2%, 3%, 4%, 5%.

 Of course, that needs a definition of what it means for two lines to
 differ. We might try defining the difference as the point x where f1(x)
 and f2(x) differ the most. If there's noise, we might define it as the
 10th percentile of these points x, which would let us say "90% of the time
 there was at most a 1% difference."

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/1854#comment:15>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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