[ntp:questions] linux PPS reference clocks
forensic at milwpc.com
Thu Nov 2 08:11:32 UTC 2006
On Tuesday 31 October 2006 11:56, Wolfgang S. Rupprecht wrote:
> Can someone give me the back story of reference clocks on linux? I
> notice that there are a set of patches to add PPS support to the
> kernel, but there apparently is no support in the stock kernel. The
> PPS patches seem to have been around for quite a while, yet they still
> aren't included in the stock kernel. Anyone know what gives?
The LinuxPPS patches are pretty good. I haven't used the git repositories
yet, so I'm still using the 2.6.17 patch. I compiled a pristine kernel in
FC5 after I patched it with the PPS patch. I did the same thing with Debian
Etch. I used the official ntp sources, not the distro packages, as the
prepacked ntp doesn't yet support NMEA. But, with a Motorola Oncore you
would probably alright.
> Now that my machines have all been "unified" and run fc6 from a
> hodgepodge of different BSD's, I'd like to see if I can start using my
> Moto Oncore again. I'm a bit reluctant to muck up the automatic
> update machinery by installing a homegrown (home-patched ???) kernel.
I don't think FC will update the kernel if you aren't running a stock FC
kernel. So, everything else will update, but not the kernel if you compile
from pristine sources
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