Re: [Linuxptp-users] Fast reset after detection of a port's fault

[Joerg C. (LWE) <Chr...@li...>]

> Sent: Tuesday, March 07, 2017 9:37 AM
> 
> On Tue, Mar 07, 2017 at 07:57:46AM +0000, Joerg Christian (LWE) wrote:
> > When I stepped the master clock I had this result on the slave, no
> > matter what value I use for fault_reset_interval. I have always the s0 for 16
> seconds.
> 
> It's not related to the fault reset interval. In the s0 state the PI servo is measuring
> frequency of the clock and the length of the interval is inversely proportional to
> the I constant. If you need to reduce the interval, you can use a larger I constant,
> or use a different servo.

OK, that makes sense.
I now tested the servos pi, linreg, ntpshm and nullf.
What I need would be a mix of nullf and pi/linreg. 
When the deviation is smaller than the step_threshold change the clock frequency.
When the deviation is bigger than the step_threshold go immediately to s1 and step the clock.

Are there other servos available than the above mentioned?