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| author | Eric S. Raymond <esr@thyrsus.com> | 2013-10-22 18:06:19 -0400 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2013-10-22 18:06:19 -0400 |
| commit | d0343667f6011cc5b1d282c5ce0819a3d55ee83f (patch) | |
| tree | 94c2fc5342f56e4715750c8eda34cc21135d2713 /www | |
| parent | 46acd6444ef3e200d059d68ffb9d12ecde2bda2f (diff) | |
| download | gpsd-d0343667f6011cc5b1d282c5ce0819a3d55ee83f.tar.gz | |
Fold in Beat Bolli's ntpoffset script.
Diffstat (limited to 'www')
| -rw-r--r-- | www/gpsd-time-service-howto.txt | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/www/gpsd-time-service-howto.txt b/www/gpsd-time-service-howto.txt index e6c94e07..2d4f7e58 100644 --- a/www/gpsd-time-service-howto.txt +++ b/www/gpsd-time-service-howto.txt @@ -473,7 +473,9 @@ For good time stability, you should always have at least two other reference clocks in your ntpd or chrony configuration besides your GPS - in case, for example, your GPS is temporarily unable to achieve satellite lock. You can find public NTP chimers to add to your -configuration at <<USE-POOL>>. +configuration at <<USE-POOL>>. To minimize latency variations, use +the national and regional pool domains for your country and/or +nearby ones. Note that a chimer can be a poor performer (what the inventor of NTP whimsically calls a "falseticker") for either of two reasons. It may @@ -545,7 +547,8 @@ This enables logging of the peer server statistics. 2. Start ntpd and let it run for at least four hours. -3. Calculate the average GPS offset: +3. Calculate the average GPS offset using this script (a copy is +included as contrib/ntpoffset in the GPSD distribution): ----------------------------------------------------------------------------- awk ' |