[metrics-bugs] #25002 [Metrics/Onionoo]: Make data and results from Onionoo deterministic

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Jan 30 09:46:03 UTC 2018


#25002: Make data and results from Onionoo deterministic
-----------------------------+------------------------------
 Reporter:  iwakeh           |          Owner:  metrics-team
     Type:  enhancement      |         Status:  new
 Priority:  Medium           |      Milestone:
Component:  Metrics/Onionoo  |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
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Comment (by iwakeh):

 Replying to [comment:8 karsten]:
 > Replying to [comment:6 iwakeh]:
 > > Maybe, also use the valid after timestamp for the value in file
 `out/update` or remove the file?
 >
 > That might even be part of #16513. We cannot remove that file, because
 we need it for updating the index in the server part. But we could use
 something else as timestamp than the current system time. Not sure if
 valid-after timestamp is the best choice, because we have two such
 timestamps for relays and for bridges. Maybe we could use the last-
 modified time of `status/summary` here. Untested, just an idea.

 Last modified time of `status/summary` is not deterministic across
 instances.  What about using the latest time of the two valid after
 timestamps?  This would sort of synchronize Onionoo with 'Tor time'?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25002#comment:9>
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