On Sun, Feb 07, 2021 at 05:55:40PM +0000, Sean Ma wrote: > The delay value didn't jump up, so it indicates device driver or > hardware issue. Are we then referring to the I350 NIC device driver > and hardware issue?
Yes. > This issue was happening for around 10 hours, then disappears for > 3-4 days then coming back. Sounds like driver and/or hardware. > I was thinking if there is any possibility that the Linux software > clock was drifting causing the jump/offset, and the NIC PHC is > correcting it through phc2sys. Yes, that is a possibility. Make sure there no other programs running that adjust the system time, like ntpd, chrony, systemd-timesync, etc. Thanks, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
