[tor-bugs] #18798 [Metrics/CollecTor]: analysis of descriptor completeness

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed May 25 14:09:05 UTC 2016

#18798: analysis of descriptor completeness
 Reporter:  iwakeh             |          Owner:  iwakeh
     Type:  task               |         Status:  needs_information
 Priority:  Medium             |      Milestone:
Component:  Metrics/CollecTor  |        Version:
 Severity:  Normal             |     Resolution:
 Keywords:  ctip               |  Actual Points:
Parent ID:                     |         Points:
 Reviewer:                     |        Sponsor:

Comment (by iwakeh):

 > And here are some suggestions for finding out more about the missing
 >  - For serverdesc missing (referenced by votes), can you plot how many
 of those are missing by how many votes?  I wouldn't worry so much about
 missing descriptors being referenced from a single vote but more about
 missing descriptors being referenced from (almost) all votes.
 >  - Regarding the extrainfo missing, have these been published by relays
 that only published a single server descriptor or relays that have been
 around for a longer time?  Again, more worried in the latter case.

 I'll add some plots for both questions.
 Many of the missing serverdesc will most likely be referenced by the
 majority of votes, b/c the missing descs referenced from consensus always
 goes up at the same time.

 ad 2. turning off `DownloadAll...` doesn't make much of a difference, yet
 (cf. [wiki:doc/CollecTor/AnalysisDescriptorCompletenessFromScratch here]).

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18798#comment:14>
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