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There is a significant latency penalty when processing an ingress Receive if the Receive buffer resides in memory that is not on the same NUMA node as the the CPU handling completions for a CQ. The system administrator and the device driver determine which CPU handles completions. This CPU does not change during life of the CQ. Further the Upper Layer does not have any visibility of which CPU it is. Allocating Receive buffers in the Receive completion handler guarantees that Receive buffers are allocated on the preferred NUMA node for that CQ. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> |
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| .. | ||
| backchannel.c | ||
| fmr_ops.c | ||
| frwr_ops.c | ||
| Makefile | ||
| module.c | ||
| rpc_rdma.c | ||
| svc_rdma_backchannel.c | ||
| svc_rdma_recvfrom.c | ||
| svc_rdma_rw.c | ||
| svc_rdma_sendto.c | ||
| svc_rdma_transport.c | ||
| svc_rdma.c | ||
| transport.c | ||
| verbs.c | ||
| xprt_rdma.h | ||