Issues Related to RPC-over-RDMA Internode Round Trips

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Last updated 2018-08-26 (latest revision 2018-02-22)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


As currently designed and implemented, the RPC-over-RDMA protocol requires use of multiple internode round trips to process some common operations. For example, NFS WRITE operations require use of three internode round trips. This document looks at this issue and discusses what can and what should be done to address it, both within the context of an extensible version of RPC-over-RDMA and potentially outside that framework.


David Noveck (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)