Linux iSER Performance
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چکیده
Executive Summary The iSCSI Extensions for RDMA (iSER) protocol is a translation layer for operating iSCSI over RDMA transports, such as iWARP/Ethernet or InfiniBand. This paper presents iSER performance results comparing iWARP RDMA over 40Gb Ethernet and FDR InfiniBand (IB). The results demonstrate that iSER over Chelsio’s iWARP RDMA adapters achieves consistently superior results in throughput, IOPS and CPU utilization when compared to IB. Unlike IB, iWARP provides the RDMA transport over standard Ethernet gear, with no special configuration needed or additional management costs. Thanks to its hardware offloaded TCP/IP foundation, iWARP provides the high performance, low latency and efficiency benefits of RDMA, with routability to scale to large datacenters, clouds and long distances.
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