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NTP Timekeeping - notes, overview, the best or the rest

FreeBSD
NTP offset graph Pixie
Linux 3.2.63-2
GPS-18 puck
roof-mounted

kernel-mode PPS-synced NTP
 
Linux Raspberry Pi 1  
NTP offset graph Raspberry Pi 1
Linux 3.6.11
Adafruit MTK3339
RX in unheated cupboard

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 3  
NTP offset graph Raspberry Pi 3
Linux 3.6.11 #2
U-blox 6M module
Puck antenna RX indoors

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 4  
NTP offset graph Raspberry Pi 4
Linux 3.6.12.35+ #730
U-blox 5S module
Puck antenna RX indoors

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 5  
NTP offset graph Raspberry Pi 5
Linux 3.6.11 #2
U-blox 7Q module on
Raspberry Pi GPS Addon Board
Puck antenna RX indoors

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 6  
NTP offset graph Raspberry Pi 6
Linux 3.12.35+ #730
Was: U-blox 7Q module on
Raspberry Pi GPS Addon Board
Puck antenna RX indoors

kernel-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 7  
NTP offset graph Raspberry Pi 7
Linux 3.12.34+ #727
U-blox 7Q module on
Raspberry Pi+ GPS Expansion Board
Puck antenna RX indoors

user-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 8  
NTP offset graph Raspberry Pi 8
Linux 3.18.5-v7+ #746
U-blox 7Q module on
Raspberry Pi+ GPS Expansion Board
Puck antenna RX indoors

user-mode PPS-synced NTP
(transients removed)
 
Linux Raspberry Pi 9  
NTP offset graph Raspberry Pi 9
Linux 3.18.5-v7+ #746
U-blox M8Q module on
Raspberry Pi+ GPS Expansion Board
Puck antenna RX indoors

user-mode PPS-synced NTP
(transients removed)
 

Other periods: day week month year

Network configuration
NTP event log

 
Copyright © David Taylor  Edinburgh SatSignal home page Last modified: 2017 Jun 23 at 23:17:34