Thanks for the quick answer!
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?
These are my current settings, basically the default.cfg:
pi_proportional_const 0.0
pi_integral_const 0.0
pi_proportional_scale 0.0
pi_proportional_exponent -0.3
pi_proportional_norm_max 0.7
pi_integral_scale 0.0
pi_integral_exponent 0.4
pi_integral_norm_max 0.3
Thanks for the help!
Best regards
Nils
[1]
https://www.intel.la/content/www/xl/es/products/sku/41282/intel-82599es-10-gigabit-ethernet-controller/specifications.html
On 2/10/23 11:12, Miroslav Lichvar wrote:
On Mon, Oct 02, 2023 at 09:44:19AM +0200, Nils Fuerste wrote:
Unfortunately, the sync on the server receiving the sync from the BC looks
like this:
ptp4l[3297.441]: master offset 42 s2 freq +9338 path delay
319
ptp4l[3298.441]: master offset -10 s2 freq +9298 path delay
319
ptp4l[3299.441]: master offset 19 s2 freq +9324 path delay
319
That doesn't look too bad.
Is there a way to improve the configuration? I found the boundary_clock_jbod
parameter but setting it to 1 didn't improve the sync.
jbod is only needed when the ports don't share the same clock. It
degrades the sync quality.
Can someone provide a
configuration for a simple BC setup with one two-port NIC? What is the sync
quality I can expect? Any help is appreciated! Thanks in advance!
It depends on the hardware. What NIC do you have?
One thing you can try is to shorten the sync interval and decrease the
PI constants, also on the client's port of the server to minimize the
frequency noise transferred to the client.
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