# What on earth is wrong with my stratum 1 servers

**URL:** <https://community.ntppool.org/t/what-on-earth-is-wrong-with-my-stratum-1-servers/1620>\
**Category:** Server operators\
**Created:** [March 22, 2020, 1:37pm UTC](https://community.ntppool.org/t/what-on-earth-is-wrong-with-my-stratum-1-servers/1620 "2020-03-22T13:37:14Z")\
**Posts on this page:** 1\
**Showing post:** 17

<div class="post-metadata">

**Author:** ![alex](https://avatars.discourse-cdn.com/v4/letter/a/db5fbb/32.png) [@alex](https://community.ntppool.org/u/alex)\
**Post date:** [April 12, 2020, 7:16am UTC](https://community.ntppool.org/t/what-on-earth-is-wrong-with-my-stratum-1-servers/1620/17 "2020-04-12T07:16:30Z")

</div>

I have solved all my problems (well, my ntp problems at least) by moving to chrony and gpsd.

Definitely other folks comments of using GPSD helps, but I cant see why reading NMEA directly with NMEA driver shouldnt have worked. Generally my time with ntp classic and ntpsec has been unproductive.

I did get a ntpsec working with KPPS of around 15usec, but chrony does much better.

Here is my current config and my result:  
/etc/chrony/chrony.conf

```auto
server tick.meraka.csir.co.za iburst
server tock.meraka.csir.co.za iburst
server time2.facebook.com iburst
initstepslew 10 time2.facebook.com
driftfile /var/lib/chrony/chrony.drift
refclock SHM 0 offset 0.5 delay 0.5 refid GPS
refclock PPS /dev/pps0 lock GPS refid KPPS
rtcsync
keyfile /etc/chrony/chrony.keys
log tracking measurements statistics
logdir /var/log/chrony
makestep 1 3
allow
```

```auto
root@ntp-s1-1:/home/pi# chronyc sources
210 Number of sources = 5
MS Name/IP address Stratum Poll Reach LastRx Last sample               
===============================================================================
#- GPS 0 4 377 21 -101ms[-101ms] +/- 252ms
#* KPPS 0 4 377 21 -22ns[-736ns] +/- 925ns
^- tick.meraka.csir.co.za 1 7 377 4 -38us[-38us] +/- 29ms
^- tock.meraka.csir.co.za 1 7 377 194 -1247us[-1247us] +/- 31ms
^- time2.facebook.com 1 8 377 195 -1460us[-1460us] +/- 6342us
root@ntp-s1-1:/home/pi# 
```

The solution was derived from these sources:  
[https://github.com/dstumbo/chrony-rpi-gps](https://github.com/dstumbo/chrony-rpi-gps)  
[https://forums.adafruit.com/viewtopic.php?f=50&t=70133&start=255](https://forums.adafruit.com/viewtopic.php?f=50&t=70133&start=255)

Thanks to everyone for all their help and support.

Have a great easter break.

Salaams,

Alex

---

_[View the full topic](https://community.ntppool.org/t/what-on-earth-is-wrong-with-my-stratum-1-servers/1620)._