[tor-bugs] #13603 [Tor]: a lot of IOERRORS if > 600 connections are open

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Oct 30 22:54:53 UTC 2014


#13603: a lot of IOERRORS if > 600 connections are open
------------------------+---------------------------
     Reporter:  toralf  |      Owner:
         Type:  defect  |     Status:  new
     Priority:  minor   |  Milestone:
    Component:  Tor     |    Version:  Tor: 0.2.5.10
   Resolution:          |   Keywords:
Actual Points:          |  Parent ID:
       Points:          |
------------------------+---------------------------

Comment (by toralf):

 What I meant with the topic is , that as soon as I do observe more than
 600 connections (inbound+outbound) than I do observe such errors.

 In addition today I observed (for the first time after I installed the
 tor-relay) such warnings :

 {{{
 Oct 30 20:45:43.000 [notice] Your Guard 0xbaddad
 ($EA8637EA746451C0680559FDFF34ABA54DDAE831) is failing more circuits than
 usual. Most likely this means the Tor network is overloaded. Success
 counts are 165/237. Use counts are 68/68. 210 circuits completed, 0 were
 unusable, 45 collapsed, and 6 timed out. For reference, your timeout
 cutoff is 60 seconds.
 Oct 30 20:46:45.000 [warn] Your Guard 0xbaddad
 ($EA8637EA746451C0680559FDFF34ABA54DDAE831) is failing a very large amount
 of circuits. Most likely this means the Tor network is overloaded, but it
 could also mean an attack against you or potentially the guard itself.
 Success counts are 87/176. Use counts are 68/68. 148 circuits completed, 0
 were unusable, 60 collapsed, and 3 timed out. For reference, your timeout
 cutoff is 60 seconds.
 Oct 30 21:46:32.000 [warn] Your Guard 0xbaddad
 ($EA8637EA746451C0680559FDFF34ABA54DDAE831) is failing an extremely large
 amount of circuits. This could indicate a route manipulation attack,
 extreme network overload, or a bug. Success counts are 52/176. Use counts
 are 73/73. 138 circuits completed, 0 were unusable, 86 collapsed, and 2
 timed out. For reference, your timeout cutoff is 60 seconds.
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13603#comment:1>
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