[metrics-bugs] #24729 [Metrics/Onionoo]: Find reason for 'null' values in Onionoo document

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#24729: Find reason for 'null' values in Onionoo document
-----------------------------+------------------------------
 Reporter:  Dbryrtfbcbhgf    |          Owner:  metrics-team
     Type:  defect           |         Status:  new
 Priority:  High             |      Milestone:
Component:  Metrics/Onionoo  |        Version:
 Severity:  Major            |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
-----------------------------+------------------------------

Comment (by karsten):

 Here's a possibly smarter idea. We add a 6 month history object with a
 data resolution of 1 day. And we skip graphs if the reported data interval
 of even a single data point is higher than the graph interval.

 Let me illustrate this idea by giving a table of all documents containing
 histories together with their graph intervals (columns), data resolution
 (cells), and maximum number of data points (in parentheses):

 ||=''document'' =||=''3 days''     =||=''1 week''        =||=''1 month''
 =||=''3 months''       =||=''6 months''    =||=''1 year'' =||=''5 years''
 =||
 ||clients        ||                 ||'''~~1 day (7)~~''' ||'''~~1 day
 (31)~~''' ||'''~~1 day (92)~~''' ||'''1 day (183)''' ||2 days (183) ||10
 days (183) ||
 ||bandwidth      ||15 minutes (288) ||1 hour (168)        ||4 hours (186)
 ||12 hours (184)       ||'''1 day (183)''' ||2 days (183) ||10 days (183)
 ||
 ||uptime         ||                 ||1 hour (168)        ||4 hours (186)
 ||12 hours (184)       ||'''1 day (183)''' ||2 days (183) ||10 days (183)
 ||
 ||weights        ||                 ||1 hour (168)        ||4 hours (186)
 ||12 hours (184)       ||'''1 day (183)''' ||2 days (183) ||10 days (183)
 ||

 Example: The 3 days bandwidth graph has a data resolution of 15 minutes
 which means that it can hold up to 288 data points (3 * 24 * 60 / 15 =
 288).

 Suggested changes in bold are to add a 6 months graph with a resolution of
 1 day and also to drop the shorter graphs from clients documents with a
 data resolution of 1 day. (The latter is unrelated to this change, but why
 not clean up here now that we discovered this redundancy.)

 How does this sound?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24729#comment:4>
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