On Tue, Aug 29, 2017 at 04:58:14PM +0200, Thibaut BEYLER wrote:
> > #* PPS0 0 4 377 11 +4829ns[+6161ns]
> >> +/- 3021ns
> > PPS0 23 17 383 +0.001 0.052
> >> +5ns 5548ns
> I am using pps_ldisc, i tried pps-gpio but it was not better.
> I am using a custom serial cable (pin 1 of the serial cable is linked to
> the bnc ouput on the gps timeserver), same setup had given good results
> using an other software.
The chronyc output suggests the PPS input is very jittery. What
architecture is that? If it has GPIO I'd assume it's not just an
ordinary x86_64 computer. Also, what kernel version is it running? Is
the NOHZ config option enabled? Disabling it with nohz=off might help.
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