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- documentation for low-rtt and low-rtt-pct.

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git-svn-id: file:///svn/unbound/trunk@4614 be551aaa-1e26-0410-a405-d3ace91eadb9
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Wouter Wijngaards 2018-04-10 07:34:26 +00:00
parent d91f09896d
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doc/Changelog
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@ -1,3 +1,6 @@
10 April 2018: Wouter
- documentation for low-rtt and low-rtt-pct.
9 April 2018: Wouter
- Fix that flush_zone sets prefetch ttl expired, so that with
serve-expired enabled it'll start prefetching those entries.

16
doc/unbound.conf.5.in
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@ -1309,6 +1309,22 @@ to complete. Default is 10, allowing 1/10 traffic to flow normally.
This can make ordinary queries complete (if repeatedly queried for),
and enter the cache, whilst also mitigating the traffic flow by the
factor given.
.TP 5
.B low\-rtt: \fI<msec time>
Set the time in millisecond that is considere a low ping time for fast
server selection with the low\-rtt\-pct option, that turns this on or off.
The default is 45 msec, a number from IPv6 quick response documents.
.TP 5
.B low\-rtt\-pct: \fI<number>
Specify how many times out of 1000 to pick the fast server from the low
rtt band. 0 turns the feature off. A value of 900 would pick the fast
server when such fast servers are available 90 percent of the time, and
the remaining time perform normal exploration of random servers.
When prefetch is enabled (or serve\-expired), such prefetches are not
sped up, because there is no one waiting for it, and it presents a good
moment to perform server exploration. The low\-rtt option can be used
to specify which servers are picked for fast server selection, servers
with a ping roundtrip time below that value are considered.
.SS "Remote Control Options"
In the
.B remote\-control: