Testing ntpd and/or timing from gpsd

[Gary E. Miller]

Yo Frank!

On Thu, 12 May 2016 14:26:03 -0400
Frank Nicholas <frank at nicholasfamilycentral.com> wrote:

> `ethtool` can be used to see what an Ethernet adapter supports.
> 
> I think Hal was wanting to test the difference on a fancy Gb adapter
> that had those features, to see if disabling them improved NTP
> performance.

I turn off the EEE in my switches.  EEE can cause me troubles.

spidey ~ # ethtool  --show-eee  eth0
EEE Settings for eth0:
	EEE status: enabled - inactive
	Tx LPI: 0 (us)
	Supported EEE link modes:  100baseT/Full 
	                           1000baseT/Full 
	Advertised EEE link modes:  100baseT/Full 
	                            1000baseT/Full 
	Link partner advertised EEE link modes:  Not reported

If you are looking for high performance over GigE just go directly to
PTP.  A big leap in performance over any NTP.

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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