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From: Kumaraparameshwaran Rathnavel <krath at cloudsimple.com>
Subject: [SPDK] RDMA Queue Pair
Date: Fri, 30 Jun 2017 18:09:51 +0530
Message-ID: <A8259ED9-8802-44CB-9E23-BBC464B455FA@cloudsimple.com>
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To: spdk@lists.01.org

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Hi All,

I would like to get few pointers on how the RDMA is used in NVMf Target . T=
he below statement decides the value of Qdepth of NVMf Qpair.
nvmf_min(max_rw_depth, addr->attr.max_qp_rd_atom and anything more than thi=
s will be Queued irrespective of what the upper layer has the Queue depth a=
s. =


And the value for attr.max_qp_rd_atom is got by Querying the device. I see =
that ideally in most of NICs the value is 16. So does this mean that in a Q=
ueue pair there cannot be more RDMA requests than this value.

Please correct me if I am wrong.

Thanking You,
Param.


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