Messages in this thread | | | From | "Marciniszyn, Mike" <> | Subject | RE: [PATCH rdma-next] RDMA/rdmavt: Decouple QP and SGE lists allocations | Date | Fri, 14 May 2021 15:00:37 +0000 |
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> The core stuff in ib_qp is not performance sensitive and has no obvious node > affinity since it relates primarily to simple control stuff. >
The current rvt_qp "inherits" from ib_qp, so the fields in the "control" stuff are performance critical especially for receive processing and have historically live in the same allocation.
I would in no way call these fields "simple control stuff". The rvt_qp structure is tuned to optimize receive processing and the NUMA locality is part of that tuning.
We could separate out the allocation, but that misses promoting fields from rvt_qp that may indeed be common into the core.
I know that we use the qpn from ib_qp and there may be other fields in the critical path.
Mike
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