Hi Experts, I have a ptp slave running where i change my GM clock from one to another which are time-drifted around 2s. After i move i see the following issue : Aug 12 09:51:59 test-server ptp4l: [162965.012] master offset 1031074760 s2 freq +17411724 path delay 8847267 Aug 12 09:51:59 test-server ptp4l: [162965.469] selected best master clock 0012c0.fffe.801ec4 Aug 12 09:51:59 test-server ptp4l: [162965.469] foreign master not using PTP timescale Aug 12 09:52:00 test-server ptp4l: [162965.995] master offset 1015789213 s2 freq +16898958 path delay 6467343 Aug 12 09:52:01 test-server ptp4l: [162966.978] master offset 1000683192 s2 freq +16389039 path delay 4799833 Aug 12 09:52:02 test-server ptp4l: [162967.962] master offset 984409317 s2 freq +15746061 path delay 4799833 Aug 12 09:52:02 test-server systemd[1]: Time has been changed Aug 12 09:52:02 test-server systemd[8525]: Time has been changed Aug 12 09:52:03 test-server ptp4l: [162968.486] clockcheck: clock jumped forward or running faster than expected! Aug 12 09:52:03 test-server ptp4l: [162968.946] master offset 1465017586 s0 freq +15746061 path delay 1830920 Aug 12 09:52:03 test-server ptp4l: [162968.946] port 1: SLAVE to UNCALIBRATED on SYNCHRONIZATION_FAULT Aug 12 09:52:04 test-server ptp4l: [162969.930] master offset 1449422162 s0 freq +15746061 path delay 1830920 Aug 12 09:52:05 test-server ptp4l: [162970.349] selected best master clock 0012c0.fffe.801ec4 Aug 12 09:52:05 test-server ptp4l: [162970.349] foreign master not using PTP timescale Aug 12 09:52:05 test-server ptp4l: [162970.915] master offset 1433783769 s0 freq +15746061 path delay 1830920 Aug 12 09:52:06 test-server ptp4l: [162971.899] master offset 1415601491 s0 freq +15746061 path delay 4415643
I see the state moving to SLAVE and then back to UNCALIBRATED and then back to SLAVE. This continues forever and the clock is not settling. Kindly let me know if there is any means of fixing the issue. Driver used : driver: ixgbe version: 5.12.5 firmware-version: 0x800004e1, 255.65535.255 expansion-rom-version: bus-info: 0000:01:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes Regards, Karthick
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