[LinuxPPS] Experience with current linuxPPS kernel patch.

[Miroslav Lichvar]

On Wed, Mar 03, 2010 at 08:03:55PM -0700, clemens at dwf.com wrote:
> I still have the feeling that something is not quite right (but mabe elsewhere 
> in
> the kernel code) since the accuracy is just about 1us.  That is, the 'fuzz' of
> the timestamps around the mean is just about 1us.  I would expect a factor
> of x10 better than that, and would not be surprised if there is not still some
> bad ns <-> us conversions in the kernel.

What is your PPS source?

I'm using GPS 18x LVC and I'm seeing about 1us dispersion too. But the
specs say it's accurate only to 1 us, so I'm not sure if I can expect
anything better from it.

-- 
Miroslav Lichvar