Visible in trending, as a regression around 2023-12-13, more pronounced in simple setups as l2patch where the regression is 3-4% [0].

Not much can be done on VPP side, unless we want to create patches for rdma-core.
This ticket is open mainly to track a known cause.

[0] https://csit.fd.io/trending/#eNp1kMEOgjAMhp9mXkwTNh2cPIi8h5mjCskGSzcN-PQOY1I4eGnTfO3_t41pJLxGdCeha1HVQlV9m4M4nPc5vUIANYB1E8iieKAK0k5alwao9QacgvJ4A2kBU5erYJLtwBMtCuqyKLTPtJFjErqZyX8THjCEhiecYpIwrlxWu3DLnYzH2L-R-_LqzG3-AyNpt-JpDiv6O7BqhG52w0j--zzdfAAOEVmj