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

[Nils F. <nil...@sr...>]

Thanks for your help! Unfortunately, setting those values doesn't work 
for me. I get the following errors:

sudo ptp4l -2 -i enp1s0f1 -f ./default-new-master.cfg -m
-1.0 is an out of range value for option pi_proportional_const at line 73
failed to parse configuration file ./default-new-master.cfg

or

$ sudo ptp4l -2 -i enp1s0f1 -f ./default-new-master.cfg -m
P is a malformed value for option pi_proportional_scale at line 75
failed to parse configuration file ./default-new-master.cfg

I am on tag v4.1. Any ideas why this is not working?

On 3/10/23 12:28, Miroslav Lichvar wrote:
> 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.
>