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34 lines
1.8 KiB
Plaintext
34 lines
1.8 KiB
Plaintext
o Major bugfixes:
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- Ignore negative and large timeout values that can happen during a
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suspend or hibernate. These values caused various asserts to fire
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in the circuit build times code, crashing Tor. Bug 1245, bugfix on
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0.2.2.2-alpha.
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- Alter calculation of Pareto distribution parameter 'Xm' for Circuit Build
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Timeout learning to use the weighted average of the top N=3 modes. This
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should improve the timeout calculation in some cases, and prevent
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extremely high timeout values. Bug 1335, bugfix on 0.2.2.2-alpha.
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- Alter calculation of Pareto distribution parameter 'Alpha' to use a
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right censored distribution model. This allows us to remove the synthetic
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timeout generation and instead calculate build timeouts using truncated
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times. Bugs 1245+1335, bugfix on 0.2.2.2-alpha.
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- Keep circuits open (but do not use them) after the circuit timeout for
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up until the time corresponding to the 95th percentile on the Pareto CDF
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or 60 seconds, whichever is greater. This is done to provide better data
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for the new Pareto model. This percentile can be controlled by the
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consensus.
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o Minor bugfixes:
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- Eliminate a case where a circuit build time warning was displayed after
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network connectivity resumed. Bugfix on 0.2.2.2-alpha.
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o Minor features:
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- Add a TIMEOUT_RATE keyword to the BUILDTIMEOUT_SET control port event,
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to give information on the current rate of circuit timeouts over our
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stored history.
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- Add ability to disable circuit build time learning via consensus
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parameter and via a LearnCircuitBuildTimeout config option. Also
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automatically disable circuit build time calculation if we are either
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a AuthoritativeDirectory, or if we fail to write our state file. Bug 1296.
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