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Re: [tor-bugs] #4407 [Metrics Website]: Create a basic monitoring infrastructure for large scale events (was: Basic Monitoring for Large Scale Events)

#4407: Create a basic monitoring infrastructure for large scale events
-----------------------------+----------------------------------------------
 Reporter:  atagar           |          Owner:  karsten
     Type:  task             |         Status:  new    
 Priority:  normal           |      Milestone:         
Component:  Metrics Website  |        Version:         
 Keywords:                   |         Parent:         
   Points:                   |   Actualpoints:         
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Changes (by karsten):

  * component:  Metrics Utilities => Metrics Website
  * type:  project => task


Comment:

 I agree that such a tool would be quite useful.  If possible, I'd like to
 merge it with the consensus-health script and the script that checks
 whether a relay's bandwidth history timestamps are totally off (which I'm
 planning to write this week).  So, the first question would be how we can
 combine these different monitoring scripts into a common infrastructure.
 My suggestion is to continue using a Java application that gets executed
 once per hour by cron.  But I already know 1 person who won't like that
 suggestion. ;)

 The second question would be what heuristics we should use to detect these
 large scale events.  We can implement trivial things like "we just lost
 more than 25% of the relays in one hour."  But what we really need is
 someone to sit down with the descriptor archives and look what are
 expected changes and what changes would be unusual.  This may be a fine
 GSoC project (or a fine volunteer project outside of GSoC).  Having an
 existing infrastructure that someone can extend might be helpful.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4407#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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