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Update manpage for new PathBias torrc options.

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Mike Perry 2012-10-31 18:50:45 -07:00
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doc/tor.1.txt
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@ -1173,28 +1173,37 @@ The following options are useful only for clients (that is, if
**PathBiasNoticeRate** __NUM__ +
**PathBiasDisableRate** __NUM__ +
**PathBiasWarnRate** __NUM__ +
**PathBiasExtremeRate** __NUM__ +
**PathBiasDropGuards** __NUM__ +
**PathBiasScaleThreshold** __NUM__ +
**PathBiasMultFactor** __NUM__ +
**PathBiasScaleFactor** __NUM__::
These options override the default behavior of Tor's (**currently
experimental**) path bias detection algorithm. To try to find broken or
misbehaving guard nodes, Tor looks for nodes where more than a certain
fraction of circuits through that node fail after the first hop. The
PathBiasCircThreshold option controls how many circuits we need to build
through a guard before we make these checks. The PathBiasNoticeRate and
PathBiasDisableRate options control what fraction of circuits must
succeed through a guard so we won't warn about it or disable it,
respectively. When we have seen more than PathBiasScaleThreshold
circuits through a guard, we divide our observations by
PathBiasScaleFactor, so that new observations don't get swamped by old
ones. +
through a guard before we make these checks. The PathBiasNoticeRate,
PathBiasWarnRate and PathBiasExtremeRate options control what fraction of
circuits must succeed through a guard so we won't write log messages.
If less than PathBiasExtremeRate circuits succeed *and* PathBiasDropGuards
is set to 1, we disable use of that guard. +
+
When we have seen more than PathBiasScaleThreshold
circuits through a guard, we scale our observations by
PathBiasMultFactor/PathBiasScaleFactor, so that new observations don't get
swamped by old ones. +
+
By default, or if a negative value is provided for one of these options,
Tor uses reasonable defaults from the networkstatus consensus document.
If no defaults are available there, these options default to 20, .70,
0.0, 200, and 4 respectively.
If no defaults are available there, these options default to 150, .70,
.50, .30, 0, 300, 1, and 2 respectively.
**ClientUseIPv6** **0**|**1**::
If this option is set to 1, Tor might connect to entry nodes over