> to complete the connections to a server. The machine where we are testing
> has enough CPU resource , so this 30 - 40secs appears to be the time for
> rdma_cm to transition from resolving address to establishing connections..
> Is this expected or should we be configuring rdma cm to handle this load ?
The rdma_cm can handle this load, but...
> set of system calls involved in both sides are:
>
> server:
> rdma_create_id, rdma_listen, loop with { select, rdma_get_cm_event}
> (listen backlog is 10)
the backlog is the issue. With a backlog of only 10, all additional incoming
requests get dropped and must be retried. The connect retry is a couple of
seconds. Try increasing the backlog (or setting it to 0).
- Sean
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