commit 0911bbd0cdb5459dd0eb948694f98066712cd084 Author: Nick Mathewson nickm@torproject.org Date: Wed Dec 8 11:10:05 2021 -0500

Clarify the behavior of some circuit timeout params.

In particular, this commit clarifies that the ranges of some parameters are such that choosing a very high value will, in effect, disable parts of the circuit timeout inference code. --- path-spec.txt | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/path-spec.txt b/path-spec.txt index 4422be4..33d50e5 100644 --- a/path-spec.txt +++ b/path-spec.txt @@ -633,8 +633,8 @@ Tables of Contents Default: 20 Min: 3 Max: 1000 - Effect: This is the number of circuit build times to keep track of - for the following option. + Effect: This is the number of circuit build outcomes (success vs + timeout) to keep track of for the following option.

cbtmaxtimeouts Default: 18 @@ -644,6 +644,10 @@ Tables of Contents circuit attempts, the client should discard all of its history and begin learning a fresh timeout value.

+ Note that if this parameter's value is greater than the value + of 'cbtrecentcount', then the history will never be + discarded because of this feature. + cbtmincircs Default: 100 Min: 1 @@ -651,6 +655,12 @@ Tables of Contents Effect: This is the minimum number of circuits to build before computing a timeout.

+ Note that if this parameter's value is higher than 1000 (the + number of time observations that a client keeps in its + circular buffer), circuit build timeout calculation is + effectively disabled, and the default timeouts are used + indefinitely. + cbtquantile Default: 80 Min: 10