[tor-bugs] #22752 [Core Tor/Tor]: Assertion failure in consensus_cache_entry_handle_get on Windows

Tor Bug Tracker & Wiki blackhole at torproject.org
Sat Aug 5 08:26:04 UTC 2017


#22752: Assertion failure in consensus_cache_entry_handle_get on Windows
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 Reporter:  ahf           |          Owner:
     Type:  defect        |         Status:  needs_information
 Priority:  High          |      Milestone:  Tor: 0.3.1.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.3.1.3-alpha
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:  Sponsor4
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Comment (by Vort):

 This bug can be reproduced with two virtual machines:
 1. Windows 7, Tor 0.3.1.5-alpha relay.
 2. Ubuntu 16.04, chutney "basic" network.

 It takes about 10 minutes until cache fills up with 256 entries and
 assertions start appearing in log file.

 But there is one problem with this test:
 In about a minute, Windows 7-based relay start to use 100% of CPU
 resources.
 (Looks like this overload is made by a lot of `tor_cond_wait()` calls)
 So it needs to be limited for one core usage, or your system will be
 lagging.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22752#comment:9>
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