Each ingress packet to the NIC is accurately timestamped with the following precision parameters:
Precision of Rx Timestamp Across Devices
|
Device |
Accuracy |
Precision |
|---|---|---|
|
ConnectX-6 Dx |
8 nanoseconds |
4 nanoseconds |
As for the timestamp format: Free-running counter is the default mode.
When the real-time clock is enabled in the hardware, the timestamp format can be UTC/TAI format as well.
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