Kernel PPS processing

[Gary E. Miller]

Yo Hal!

On Wed, 29 Jun 2016 15:28:29 -0700
Hal Murray <hmurray at megapathdsl.net> wrote:

> gem at rellim.com said:
> >> I'm not sure why you would expect performance to be identical.  
> > Because thhey use the same kernel generated time stamp and PLL
> > algorithm.   
> 
> There are two chunks of PPS code in the kernel with separate RFCs.
> One is getting the time stamp.  The other is doing the PLL.  The
> in-kernel PLL is totally different from anything in ntpd.

Interesting.  So they start with the same time stamp, but PLL
differently.  I wonder why the PLL's is so different?

I'll bet the kernell converence is much faster than the ntpsec
convergence.  The best answer is likely in between.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588
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