Re: [Linuxptp-users] [Linuxptp-devel] Clockcheck: clock jumped backward or running slower than expected!

2022-08-03 Thread Miroslav Lichvar
On Wed, Aug 03, 2022 at 10:51:27AM +, ramesh t wrote: > Thanks for your response. > > This issue is observed on NIC PHC and apart from ptp4l no other process will > update the NIC PHC in this case. Can you post a log with the message? > > Will process (ptp4l) scheduling have an impact on

Re: [Linuxptp-users] [Linuxptp-devel] Clockcheck: clock jumped backward or running slower than expected!

2022-08-03 Thread ramesh t via Linuxptp-users
Thanks for your response. This issue is observed on NIC PHC and apart from ptp4l no other process will update the NIC PHC in this case. Will process (ptp4l) scheduling have an impact on this? regards, Ramesh On Wednesday, August 3, 2022 at 12:03:10 PM GMT+5:30, Miroslav Lichvar wrote:

Re: [Linuxptp-users] [Linuxptp-devel] Clockcheck: clock jumped backward or running slower than expected!

2022-08-03 Thread Miroslav Lichvar
On Tue, Aug 02, 2022 at 05:42:55PM +, ramesh t via Linuxptp-devel wrote: > Hello, > > Observing once in while clockcheck error. > > Any suggestion why this could happen?? On what hardware? SW or HW timestamping? It could be a driver bug. It could also be another program adjusting the