[tor-bugs] #33401 [Circumvention/Snowflake]: turbotunnel-quic snowflake-client occasionally uses lots of CPU
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Thu Feb 20 17:22:02 UTC 2020
#33401: turbotunnel-quic snowflake-client occasionally uses lots of CPU
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Reporter: dcf | Owner: dcf
Type: defect | Status: assigned
Priority: Medium | Milestone:
Component: Circumvention/Snowflake | Version:
Severity: Normal | Keywords: turbotunnel
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: |
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As originally noted at comment:7:ticket:33211, the quic-go turbotunnel
client sometimes uses 100+% CPU for a few minutes before returning to
normal operation. It is specific to the quic-go implementation; it doesn't
happen with the kcp-go implementation nor the non-turbotunnel client.
As best I can figure, the cause has something to do with timers created
under `(*session) maybeResetTimer`.
attachment:profile001.png
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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33401>
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