[ntp:questions] Problems distibuting time from GPSD programto NTPD

Jason Rabel jason at extremeoverclocking.com
Mon Feb 4 19:48:04 UTC 2008

>> I have a gpsd and ntpd in connection running on a Fedora 5 box.
>Why not connect the gps directly to ntpd? (if it supports nmea output)
>If it has PPS output you get magnitudes higher accuracy.

Linux doesn't directly support a PPS signal (unless you use some 3rd party
code to patch and recompile a custom kernel), that is why he is using GPSD
as a helper app (which feeds the PPS timing via SHM to NTP).

More information about the questions mailing list