Performance Evaluation of iSCSI Protocol with Automatic Parallelism Tuning on SINET3 with Layer-1 Bandwidth on Demand Service

摘要

In this paper, we evaluate the performance of iSCSI-APT (iSCSI with Automatic Parallelism Tuning) in a real long-fat network, SINET3 (Science Information Network 3). iSCSI-APT is an initiator-side extension to the iSCSI protocol, and it automatically adjusts the number of multiple iSCSI connections for maximizing the iSCSI throughput. SINET3 provides a variety of advanced network services. One of the notable features in SINET3 for networking researchers is its layer-1 bandwidth on demand service. The layer-1 bandwidth on demand service allows SINET3 users to dynamically reserve/release a layer-1 path between SINET3 sites. Such an advanced network service in SINET3 is quite beneficial to networking researches because of its reality, flexibility, and reproducibility. We perform a number of experiments on SINET3 for evaluating the performance of iSCSI-APT while changing the bandwidth allocation between sites. Our experiment results show that iSCSI-APT performs quite effectively in a long-fat network.