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@@ -0,0 +1,30 @@
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+ 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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+ - Implement a filtering step to recompute synthetic build times every time
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+ the timeout changes. Additionally, place a lower cap on synthetic build
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+ times, and allow this cap to be controlled by the consensus. This should
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+ also improve the build time calculations, and should eliminate a case
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+ where Tor was allocating an excessive amount of temporary memory during
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+ timeout calculation. Bugs 1335 and 1245, bugfix on 0.2.2.2-alpha.
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+
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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.
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+
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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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+
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+
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Mike Perry