Unverified Commit 30e13716 authored by teor's avatar teor
Browse files

Make the default DirAuthorityFallbackRate 0.1

This makes clients on the public tor network prefer to bootstrap off fallback
directory mirrors.

This is a follow-up to 24679, which removed weights from the default fallbacks.

Implements ticket 24681.
parent 7d845976
o Minor features (fallback directory mirrors):
- Make the default DirAuthorityFallbackRate 0.1, so that clients on the
public tor network prefer to bootstrap off fallback directory mirrors.
This is a follow-up to 24679, which removed weights from the default
fallbacks.
Implements ticket 24681.
...@@ -432,7 +432,8 @@ GENERAL OPTIONS ...@@ -432,7 +432,8 @@ GENERAL OPTIONS
When configured to use both directory authorities and fallback When configured to use both directory authorities and fallback
directories, the directory authorities also work as fallbacks. They are directories, the directory authorities also work as fallbacks. They are
chosen with their regular weights, multiplied by this number, which chosen with their regular weights, multiplied by this number, which
should be 1.0 or less. (Default: 1.0) should be 1.0 or less. The default is less than 1, to reduce load on
authorities. (Default: 0.1)
[[AlternateDirAuthority]] **AlternateDirAuthority** [__nickname__] [**flags**] __address__:__port__ __fingerprint__ + [[AlternateDirAuthority]] **AlternateDirAuthority** [__nickname__] [**flags**] __address__:__port__ __fingerprint__ +
......
...@@ -225,7 +225,14 @@ static config_var_t option_vars_[] = { ...@@ -225,7 +225,14 @@ static config_var_t option_vars_[] = {
VAR("DirReqStatistics", BOOL, DirReqStatistics_option, "1"), VAR("DirReqStatistics", BOOL, DirReqStatistics_option, "1"),
VAR("DirAuthority", LINELIST, DirAuthorities, NULL), VAR("DirAuthority", LINELIST, DirAuthorities, NULL),
V(DirCache, BOOL, "1"), V(DirCache, BOOL, "1"),
V(DirAuthorityFallbackRate, DOUBLE, "1.0"), /* A DirAuthorityFallbackRate of 0.1 means that 0.5% of clients try an
* authority when all fallbacks are up, and 2% try an authority when 25% of
* fallbacks are down. (We rebuild the list when 25% of fallbacks are down).
*
* We want to reduce load on authorities, but keep these two figures within
* an order of magnitude, so there isn't too much load shifting to authorities
* when fallbacks go down. */
V(DirAuthorityFallbackRate, DOUBLE, "0.1"),
V(DisableAllSwap, BOOL, "0"), V(DisableAllSwap, BOOL, "0"),
V(DisableDebuggerAttachment, BOOL, "1"), V(DisableDebuggerAttachment, BOOL, "1"),
V(DisableIOCP, BOOL, "1"), V(DisableIOCP, BOOL, "1"),
......
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