Insufficient clock accuracy in PTP clock synchronization using Red Hat Enterprise MRG Realtime kernel and Mellanox card
Issue
Typical offset between master and HW clock on Mellanox card is ~10us on average. On non rt kernel is near 50ns (nanoseconds not us).
Environment
Red Hat Enterprise MRG RealTime
Real-time kernel 3.10.0-327.rt56
Mellanox Technologies MT27500 Family [ConnectX-3] using mlx4 driver
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