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Improve description of refclock delay option

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Miroslav Lichvar 2013-12-11 17:59:14 +01:00
parent 46a39716b6
commit b7ed44f113
1 changed files with 6 additions and 6 deletions
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chrony.texi.in
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@ -2506,7 +2506,7 @@ directive}) enabled to work. For example:
@example
refclock PPS /dev/pps0 lock NMEA
refclock SHM 0 offset 0.5 delay 0.1 refid NMEA noselect
refclock SHM 0 offset 0.5 delay 0.2 refid NMEA noselect
@end example
@item SHM
@ -2599,11 +2599,11 @@ This option can be used to compensate a constant error. The specified
offset (in seconds) is applied to all samples produced by the
refclock. The default is 0.0.
@item delay
This option is used to specify how the refclock is assumed
to be inaccurate (in seconds). Increasing the value is useful to
avoid having no majority in the source selection algorithm or to make
the algorithm prefer other refclocks. The default is 1e-9 (1
nanosecond).
This option sets the NTP delay of the source (in seconds). Half of
this value is included in the maximum assumed error which is used in the
source selection algorithm. Increasing the delay is useful to avoid
having no majority in the algorithm or to make it prefer other
sources. The default is 1e-9 (1 nanosecond).
@item precision
Refclock precision (in seconds). The default is 1e-6 (1 microsecond)
for SHM refclock, and 1e-9 (1 nanosecond) for SOCK and PPS refclocks.