UCX RDMA Network

Overview

A plugin is applied to the Ceph network framework AsyncMessager to support the UCX network framework, which enables full RDMA in Ceph all-flash storage. The UCX communication processing layer adapts Ceph and UCX interfaces and implements zero copy based on rendezvous (RNDV) protocol characteristics to improve large-block write performance.

Technical Principles

Figure 1 Ceph RDMA network communication framework

Expected Results

RDMA accelerates network processing and reduces the read/write latency. The cluster performance within 1 ms can be improved by 10%.