[tor-bugs] #2394 [Metrics]: Visualize self-reported vs. measured bandwidth of relays

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Wed Apr 20 10:13:44 UTC 2011


#2394: Visualize self-reported vs. measured bandwidth of relays
-------------------------+--------------------------------------------------
 Reporter:  mikeperry    |          Owner:  karsten 
     Type:  enhancement  |         Status:  assigned
 Priority:  normal       |      Milestone:          
Component:  Metrics      |        Version:          
 Keywords:               |         Parent:  #2769   
   Points:               |   Actualpoints:          
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Comment(by karsten):

 There are three new graphs attached to this ticket:

  - The [https://trac.torproject.org/projects/tor/attachment/ticket/2394
 /bandwidth-comparison-relays-2011-04-20.png first graph] shows empirical
 cumulative distribution functions of ratios of measured by self-reported
 bandwidth for six categories of relays in the consensus from January 24,
 2011 at 00:00:00 UTC.

  - The [https://trac.torproject.org/projects/tor/attachment/ticket/2394
 /bandwidth-comparison-relays-votes-2011-04-20.png second graph] compares
 ratios in votes to the ratios in the consensus for the six categories.
 The black line is the consensus, the gray lines are the four votes.

  - The [https://trac.torproject.org/projects/tor/attachment/ticket/2394
 /bandwidth-comparison-measured-votes-2011-04-20.png third graph] uses
 measured bandwidth weights on the y axis rather than absolute relay
 numbers.  This graph is somewhat misleading, because it over-represents,
 well, relays with high measured bandwidth (surprise!).  I wonder if
 there's a better weight to use here.  The second graph is probably more
 useful than this one.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2394#comment:16>
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