[LinuxPPS] convergence patch

[Bernhard Schiffner]

On Thursday 07 May 2009 19:14:43 Hal V. Engel wrote:
> On Thursday 07 May 2009 09:57:22 am Magnus Danielson wrote:
> > Udo van den Heuvel skrev:
> > > Bernhard Schiffner wrote:
> > >> Simple changes take longer.
> > >> I asked the convergence behavior too and didn't get a real response.
> > >> (here and lkml)
...
>
> The other thing is that as far as I can determine the only user land app
> that uses this API is ntp so perhaps the best solution is to modify the ntp
> build so that it no longer uses glibc and instead builds against the kernel
> directly.
>
> Hal
>

Full ACK.

LinuxPPS is until now still something special in a special community.
3 Years after the work started (and is in a useable shape now) "nothing" is 
decided. It's a frustration for all of us.

In the mean time: do the necessary things yourself.
(Patch as it is to your requirements ...)

This means for me: after knowing of John's patch I have interest in doing some 
real ntp with pps again.
I run machines which have little uptime because they are switched on and off 
regulary. If they can't sync their time to below videoframe-precision within 
minutes (and hold it there!): sorry, it was not useable for me.

So long I had only interest in "details" of interrupting etc. but could not 
use or set up  a  _good_ for_me_ ntp-server nor -client.

Bernhard

(Did you notice in the kernel thread: Ulrich Windl is alive!)