Puzzling clock offset spikes

Gary E. Miller gem at rellim.com
Thu Jul 5 16:42:48 UTC 2018

Yo Paul!

On Wed, 4 Jul 2018 18:37:46 -0700
Paul Theodoropoulos <paul at anastrophe.com> wrote:

> What changed: I'd poked around with assorted parameters of the "dwc" 
> module, which apparently drives the USB subsystem. It got to where
> I'd added all of these dwc module options to the /boot/cmdline.txt:

You are runnning USB on a timekeeping RasPi?  I stopped doing that
when I noticed it wrecked havok with my measurements.  Unplug!

Of course the ethernet goes through USB on the RasPi, so minimize
ethernet usage too.

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

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin
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