On Thu, Sep 08, 2022 at 06:40:26AM -0700, Richard Cochran wrote: > On Thu, Sep 08, 2022 at 07:41:53PM +0800, Hamilton Alex wrote: > > > however, the 1pps time error is around 40 NS, which means my board is > > ahead of the reference for about 40NS, which doesn't match the result > > dumped by ptp4l. > > > > anyone has met similar issue before? how to debug such issue? > > This is likely due to path asymmetry.
Oh, and Miroslav is correct, 9 usec path delay is huge. It should be only 5 ns per meter of cable. Good luck, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
