[LinuxPPS] precision

[clemens at dwf.com]

> 
> OK, so how could we tune/configure the kernel to get maximum performance?
> Do we need highres clocks for precision?
> TSC? HPET?
> How many HZ in the kernel?
> (not HZ-less?)
> Etc
> 
It seems to get more precision we would need an actual nano-second clock
in Linux.

We had that for a while with Ulrich's patch, but it (the patch) touched so many
things that it never got in.

Today, we would probably need Poul-Henning Kamp's Timecounters patch
from FreeBSD to get actual nano-second time, and Im not sure how many
hardware platforms that has been adapted to.
-- 
                                        Reg.Clemens
                                        reg at dwf.com