[tor-bugs] #25226 [Core Tor/Tor]: Circuit cell queue can fill up memory

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Feb 16 06:57:41 UTC 2018


#25226: Circuit cell queue can fill up memory
------------------------------------------+--------------------------------
 Reporter:  dgoulet                       |          Owner:  dgoulet
     Type:  defect                        |         Status:  accepted
 Priority:  Medium                        |      Milestone:  Tor:
                                          |  0.3.3.x-final
Component:  Core Tor/Tor                  |        Version:
 Severity:  Normal                        |     Resolution:
 Keywords:  tor-cell, tor-relay, tor-dos  |  Actual Points:
Parent ID:                                |         Points:
 Reviewer:                                |        Sponsor:
------------------------------------------+--------------------------------

Comment (by sjcjonker):

 Just an FYI, the frequency seems to increase. Which I think has a negative
 effect for the entire network, as in the times leading up to this the CPU
 usage doubles (possibly higher, but hitting max of VM) the node becomes
 sluggish and so does the network performance for this host.

 So possibly it's language, but the status and previous comment seems to
 indicate this won't be fixed? Should the operator then tweak the
 MaxMemInQueues by the # of expected circuits times X KiB to assure this
 doesn't have such an impact?

 Feb 12 18:54:56 tornode2 Tor[6362]: Removed 1599323088 bytes by killing 1
 circuits; 39546 circuits remain alive. Also killed 0 non-linked directory
 connections.
 Feb 14 18:46:29 tornode2 Tor[13637]: Removed 519278496 bytes by killing 1
 circuits; 122786 circuits remain alive. Also killed 0 non-linked directory
 connections.
 Feb 14 19:04:21 tornode2 Tor[13637]: Removed 785149728 bytes by killing 1
 circuits; 111745 circuits remain alive. Also killed 0 non-linked directory
 connections.
 Feb 14 19:46:44 tornode2 Tor[13637]: Removed 1510173456 bytes by killing 1
 circuits; 98098 circuits remain alive. Also killed 0 non-linked directory
 connections.
 Feb 15 14:14:18 tornode1 Tor[23044]: Removed 1360147536 bytes by killing 1
 circuits; 58922 circuits remain alive. Also killed 0 non-linked directory
 connections.
 Feb 16 01:58:55 tornode1 Tor[23044]: Removed 509234880 bytes by killing 4
 circuits; 57780 circuits remain alive. Also killed 0 non-linked directory
 connections.
 Feb 16 02:07:22 tornode1 Tor[23044]: Removed 699879840 bytes by killing 1
 circuits; 53007 circuits remain alive. Also killed 0 non-linked directory
 connections.
 Feb 16 03:05:34 tornode1 Tor[23044]: Removed 1593724176 bytes by killing 2
 circuits; 52509 circuits remain alive. Also killed 0 non-linked directory
 connections.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25226#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online


More information about the tor-bugs mailing list