[tor-bugs] #32950 [Applications/Tor Browser]: TorButton causes significant CPU load

[Tor Bug Tracker & Wiki]

#32950: TorButton causes significant CPU load
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 Reporter:  cypherpunks  |          Owner:  tbb-team
     Type:  defect       |         Status:  new
 Priority:  Medium       |      Component:  Applications/Tor Browser
  Version:               |       Severity:  Normal
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
 Reviewer:               |        Sponsor:
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 When using TorBrowser without Tor (extensions.torbutton.use_nontor_proxy =
 true) TorButton tries to connect to control port, fails and then begins to
 waste CPU cycles by retrying control port connection attempts.

 This is due to circuit display code here:
 https://gitweb.torproject.org/torbutton.git/tree/chrome/content/tor-
 circuit-display.js#n412

 Disabling extensions.torbutton.display_circuit solves this, but it is
 kinda non obvious from user POV. Please make
 extensions.torbutton.use_nontor_proxy the only pref needed for TorButton
 to cease all of its Tor-related activities.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32950>
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