USIW: Design and Implementation of Userspace Software iWARP using DPDK

Decreasing access latencies of non-volatile memory (NVM) demonstrate the need for a more efficient software storage stack. Remote Direct Memory Access (RDMA) is a useful lightweight mechanism for accessing NVM, as demonstrated by FlashNet. FlashNet is a kernel space solution which integrates the softiwarp RDMA endpoint and SALSA software Flash controller to allow local and remote endpoints to access storage using RDMA. In this study, we use the Data Plane Development Kit (DPDK) to develop a userspace RDMA endpoint called USIW (Userspace SoftiWARP), to be the rst component of a userspace analogue to FlashNet. We examine the performance of USIW compared to the kernel softiwarp using standard verbs-level microbenchmarks.

By: P.I. MacArthur

Published in: RZ3894 in 2016


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