On Thu, Nov 10, 2016 at 02:38:04PM -0800, Denny Page wrote:
> Things are working quite well with software timestamping.
> 
> This is from my monitoring system:

> 210 Number of sources = 6
> Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
> ==============================================================================
> 192.168.230.240            40  21    53     +0.000      0.004   -370ns   105ns
> 192.168.230.244            62  35    89     -0.001      0.002   -430ns   108ns
> 192.168.230.245            46  23    60     +0.000      0.004     +0ns   126ns
> 192.168.230.1              42  20   330     -0.009      0.010  -1152ns  1662ns
> 192.168.230.2              38  20    98     +0.014      0.023   +742ns  1163ns
> 192.168.225.10             29  15  1083     -0.007      0.009    +33us  4906ns

This looks very good and I'm curious to see how much further it will
improve with HW timestamping. The offset of ~400ns between the 1st/2nd
and 3rd server could be an asymmetry in delay due to the switch, right?

-- 
Miroslav Lichvar

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