[tor-bugs] #29330 [Metrics/Website]: Do something with advertised bandwidth distribution graphs

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon Mar 4 09:09:21 UTC 2019


#29330: Do something with advertised bandwidth distribution graphs
-----------------------------+------------------------------
 Reporter:  karsten          |          Owner:  metrics-team
     Type:  enhancement      |         Status:  new
 Priority:  Medium           |      Milestone:
Component:  Metrics/Website  |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:  irl              |        Sponsor:
-----------------------------+------------------------------

Comment (by karsten):

 Replying to [comment:5 teor]:
 > I often use n-th fastest to work out the fastest relay(s) over time.

 Assuming we keep the parameter for n-th fastest, you'd still learn the
 n-th fastest relay by consensus weight, just not by advertised bandwidth.
 Depending on how you define how fast a relay is, this would still be
 possible with the new graph.

 > I expect to use n-th fastest a bit while developing PrivCount to answer
 questions like:
 > * what's the highest bandwidth?

 After the suggested change you'd have to look at descriptors yourself for
 this. However, this particular question is relatively easy: just grep for
 `bandwidth` lines and compute the maximum advertised bandwidth.

 > * what do we get if we aggregate the top N relays?

 This question would require some more code. However, it's also not
 immediately answered by the Tor Metrics graphs, except maybe for N < 4.

 > * what's the minimum relay count and consensus weight we should require
 to create an aggregate total?
 > (we can't have a bandwidth requirement, because we don't know the
 bandwidth until *after* we aggregate)

 This is another question that would probably require you to write code
 yourself.

 In conclusion, the suggested graph would answer your questions just as
 well as the current graphs, right?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29330#comment:7>
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