[tor-bugs] #25461 [Core Tor/Tor]: main event-loop spins consuming 100% of a CPU core at times
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Tue Mar 20 13:05:32 UTC 2018
#25461: main event-loop spins consuming 100% of a CPU core at times
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Reporter: Dhalgren | Owner: (none)
Type: defect | Status: new
Priority: Medium | Milestone: Tor: 0.3.4.x-final
Component: Core Tor/Tor | Version: Tor: 0.3.3.3-alpha
Severity: Normal | Resolution:
Keywords: performance | Actual Points:
Parent ID: #25500 | Points:
Reviewer: | Sponsor:
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Changes (by nickm):
* keywords: regression?, performance, 033-must? => performance
* parent: => #25500
* milestone: Tor: 0.3.3.x-final => Tor: 0.3.4.x-final
Comment:
... but the last comment indicates that it is probably not a regression.
I think we might be able to look at this as part of #25500, though, since
anything that can make the main loop run wild without actually taking any
action is something that could maybe affect clients too.
One hypothesis is that we should be marking some connection as blocked,
but that we aren't, so we are busy-polling on it.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25461#comment:4>
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