[LinuxPPS] What is an acceptable delay and jitter?

[Udo van den Heuvel]

Philip M. White wrote:
> All,
> 
> What is considered acceptable delay and jitter for a LinuxPPS-enabled
> system?  With my Garmin GPS 18 LVC, I am seeing a constant delay of
> 0.000, but a jitter of about 0.021 to 0.025 ms.
> 
> Has anyone been able to attain a jitter of less than 21 microseconds?

On my VIA Epia CL6000 (600 MHz Pentium++) I get different values but
they get lower than 0.004 at times. (if reception is good, needs
improvement)
Check http://pindarots.xs4all.nl/mrtg/ntpstat.html for some graphs.

Udo