Re: PPS Driver -- getting wrong REFID and stratum when peer isn't local refclock



John Ackermann N8UR <jra@xxxxxxxx> wrote:

I'm not sure if this is a bug, or a configuration problem. I'm running
ntp-stable-4.2.0a-20050720 on a FreeBSD 5.4 system with PPS kernel enabled.

I'm trying to do almost the same and no luck yet on the PPS bit.

you have

options PPS_SYNC

in the kernel config or more stuff?

and

link cuaa0 pps0

in devfs.conf?

# PPS
enable pps
server 127.127.22.0
fudge 127.127.22.0 flag3 1
fudge 127.127.22.0 refid PPS

My ntp.conf looks quite the same. We have this working on Linux with a
nano-kernel, I'd just like to have it running on FreeBSD too.

Koos

--
Koos van den Hout PGP keyid 0x27513781 The Virtual Bookcase
Mail koos@xxxxxxxx Use PGP when possible Book reviews,
Phone +31-30-2534104 book news
Fax +31-30-2513791 http://www.virtualbookcase.com/
.



Relevant Pages

  • Re: PPS on Linux status?
    ... FreeBSD works like a charm. ... The full functionality for precision kernel and PPS is in Solaris, ... The PPSKit is specific to Linux and an API for it is in no other system ...
    (comp.protocols.time.ntp)
  • Re: Dropping Packets in 2.6.17
    ... classify and do statistical calculations ... on 625Kpps per interface. ... Unfortunately I can do that much with FreeBSD 4.x ...
    (Linux-Kernel)
  • Re: OS choice for an edge router
    ... FreeBSD box configured as router appears to slow down the userland processes ... The worst case for 1GBps is about 1.488 Million pps. ... and when it doesn't they expect you to fix it pronto. ...
    (freebsd-net)
  • Re: PPS working or not? FreeBSD 5.4
    ... David J Taylor wrote: ... and interfacing it to a Garmin GPS 18 LVC. ... I'm really new to FreeBSD so I might have missed the ... Jitter from a GPS18LVC should be on the order of 3-5 microseconds so I think your PPS is not working. ...
    (comp.protocols.time.ntp)
  • Re: PPS on Linux status?
    ... The full functionality for precision kernel and PPS is in Solaris, FreeBSD and Alpha Tru64. ... FreeBSD works best for me using the pps driver, since no level converter is required and the DCD is not an issue. ... The PPSKit is specific to Linux and an API for it is in no other system known to me. ...
    (comp.protocols.time.ntp)