On Tue, Mar 28, 2023 at 10:24:47PM +0800, Merlin He wrote:
> hello team,
>
> I found that port_nrate_calculate() save the first ingress1 before slave
> clock jumping, if the offset of master and slave is too large, this may
> results in an extremly small nrate_ratio value, and cause the nagative
> delay issue.
> so, is this a problem please?
There might be an assumption that the clock if running free. I'm not
very familiar with this feature.
> what about port_nrate_calculate() sampling the first ingress1 until servo
> entering lock state?
> like this:
> 1028 if (tmv_is_zero(n->ingress1) && *clock_servo_state(p->clock) ==
> SERVO_LOCKED*) {
> 1029 n->ingress1 = ingress;
> 1030 n->origin1 = origin;
> 1031 return;
> 1032 }
Another option might be calling port_nrate_initialize() on clock jump.
--
Miroslav Lichvar
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