[ntp:questions] Atom PPS with parallel port

William Unruh unruh at invalid.ca
Sun Feb 23 22:30:46 UTC 2014


On 2014-02-23, Chris Adams <cma at cmadams.net> wrote:
> Once upon a time, Rob  <nomail at example.com> said:
>>Did you compile your own kernel or is it all done using standard
>>distribution kernel and tools?
>
> I am running mine on Fedora 20, which includes all the necessary bits.
> The pps_parport module is included in the regular kernel RPMs.
>
>>I further studied the matter and found that on the CentOS 6.5 system
>>where I first checked the kernel is at 2.6.32 and the pps_parport module
>>is not yet included.
>
> When I ran this on a CentOS system, I didn't use the in-kernel PPS.  I
> used the shmpps daemon from EPEL instead (user-space daemon, so not
> quite as accurate).
>
>>Probably a suitable kernel will be in CentOS 7.x
>
> Looking at the RHEL 7 beta, it does include the pps_parport module.
> However, I expect it will be another few months before RHEL 7.0 is
> released, and then a month or two after that for CentOS 7.0.

pps_parport and pps_core have been part of the kernel for at least three
years, maybe more. I know Mandriva did not include the pps-serial module
in their distro for some weird reason (the others were there).

So you should not be just waiting for it now. 



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