[tor-bugs] #27135 [Core Tor/sbws]: Write descriptor bandwidths average in raw results

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#27135: Write descriptor bandwidths average in raw results
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 Reporter:  juga           |          Owner:  juga
     Type:  defect         |         Status:  assigned
 Priority:  Medium         |      Milestone:  sbws 1.0 (MVP must)
Component:  Core Tor/sbws  |        Version:
 Severity:  Normal         |     Resolution:
 Keywords:                 |  Actual Points:
Parent ID:  #27108         |         Points:
 Reviewer:                 |        Sponsor:
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Comment (by teor):

 And that's fair enough, we weren't expecting to have to use descriptor
 bandwidths for anything.

 Here's the simplest model we could use:
 * take the latest measurement, and scale by the descriptor bandwidth at
 the time of the measurement

 Here's a more accurate model we could use:
 * take the decaying average of the measurements, and scale by the decaying
 average of the descriptor bandwidths

 And we should probably think about:
 * how we handle zeroes (replace with 1 is a nice simple fix for a bunch of
 issues)
 * how we handle new relays (treat their old bandwidths as 1 is a nice
 simple way of rewarding stability)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27135#comment:9>
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