[ntp:questions] IEEE 1588 (PTP) at the nanosecond level?

Paul tik-tok at bodosom.net
Mon Mar 17 16:13:36 UTC 2014

On Mon, Mar 17, 2014 at 8:50 AM, Joe Gwinn <joegwinn at comcast.net> wrote:

> Yes.  My question is basically a query about the current state of the
> art.

Some NTP offsets (output may look funny if formatted) clock1 looking at
clock2 and clock3 (a Raspberry Pi).  This suggests it can be as good as
your IRIG system.

Gig ethernet to Gig ethernet.  ~22 days:
    N           Min           Max        Median           Avg        Stddev
 244059  -0.098741335   0.019727433     9.586e-06  4.814598e-06

Gig to Fast ~10 days
    N           Min           Max        Median           Avg        Stddev
 112254  -0.000516264   0.000453913     1.127e-06 6.8736914e-06

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