[tor-bugs] #3189 [Torflow]: Find out why bwscanners break after a few days/weeks of operation

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#3189: Find out why bwscanners break after a few days/weeks of operation
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 Reporter:  karsten  |          Owner:  mikeperry
     Type:  defect   |         Status:  new      
 Priority:  normal   |      Milestone:           
Component:  Torflow  |        Version:           
 Keywords:           |         Parent:           
   Points:           |   Actualpoints:           
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 All four bwscanners on gabelmoo broke at different times in the past two
 weeks.  When running cron.sh manually, I get:

 {{{
 WARN[Sun May 15 18:12:49 2011]:Bandwidth scanner scanner.1 stale. Possible
 dead bwauthority.py. Timestamp: Mon May  2 23:10:20 2011
 WARN[Sun May 15 18:12:49 2011]:Bandwidth scanner scanner.3 stale. Possible
 dead bwauthority.py. Timestamp: Tue May 10 21:26:10 2011
 WARN[Sun May 15 18:12:49 2011]:Bandwidth scanner scanner.2 stale. Possible
 dead bwauthority.py. Timestamp: Wed May  4 18:13:06 2011
 WARN[Sun May 15 18:12:49 2011]:Bandwidth scanner scanner.4 stale. Possible
 dead bwauthority.py. Timestamp: Wed May 11 02:38:38 2011
 }}}

 Other than that, the logs look pretty normal to me.  But maybe that's
 because Tor was only logging on notice level.

 After staring at logs for an hour or two, I changed Tor logging to debug
 and redirected all of bwscanner's cron output to files.  Depending on
 available disk space, I might reduce Tor logging to info soon.

 Hopefully the logs will tell us something about the problem here.  The
 last time I ran into this problem, Mike suggested to just restart the
 scanners which I did.  And Andrew says he's restarting his bwscanners
 every three days to avoid them breaking.  I'd like to find out why they
 are breaking and get that fixed.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3189>
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