Re: [Linuxptp-users] Configuration for boundary clock with on two-port NIC

[Miroslav L. <mli...@re...>]

On Tue, Oct 03, 2023 at 11:45:49AM +0200, Nils Fuerste wrote:
> I have a 82599ES from Intel [1]. I found the paramters you were referring to
> but I am not sure how to adjust them. Can you give me some guidance for this
> if you get a chance?

Try this:
pi_proportional_exponent -1                                                                    
pi_integral_exponent -1
pi_proportional_scale P
pi_integral_scale I

where P and I are from one line of this table:

0.316 0.01562
0.158 0.00391
0.079 0.00098
0.040 0.00024
0.020 0.00006

This is the NTPv4 (RFC 5905) PLL at five different gains. If the sync
interval is -4 (16 sync messages per second), try the middle pair
first.

-- 
Miroslav Lichvar