Hi Richard, First, my setup description was wrong, so please let me update it:
Master <--> Slave (with embedded KSZ switch) - Master is using HW timestamps. - Slave has an embedded ptp switch (KSZ9477) which provides the Slave device HW timestamps. 1. Is your answer still valid after my setup description update ? 2. To use TC, do I need to run both master and slave in P2P mode ? Thanks, Joseph On Fri, Jun 4, 2021 at 4:27 PM Richard Cochran <richardcoch...@gmail.com> wrote: > On Thu, Jun 03, 2021 at 10:17:41PM +0300, Joseph Matan wrote: > > When there is only ptp traffic, the path delay is almost constant (very > low > > jitter). > > The weird thing (to me anyway...) is that under heavy traffic the path > > delay is getting smaller - how does that make sense? > > Because the network traffic affects the residence time in the switch. > > > If the switch is not ptp-aware I was expecting the path delay to get > bigger. > > A TC will add the (still variable) residence time into the correction > field, and as a result the path delay will remain constant. > > HTH, > Richard >
_______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
