Ziye Yang, Intel, Corp.
Ziye Yang is a cloud software engineer at Intel and involved in SPDK (storage performance development kit) development work. Before that, Ziye worked at EMC for 4.5 years. Ziye is interested in system virtualization, file system and storage related research and development work. Ziye currently has 15 issued patents in US and 7 issued patents in PRC. Ziye holds a master degree in computer science from Fudan University in 2009.
SPDK (storage performance development kit, [ Ссылка ]) already provides accelerated user space NVMe over Fabric (NVMe-oF) target, which provides much better performance compared with kernel solution on RDMA transport. And it is adopted by many cloud storage service vendors in China. In November 2018, NVM express releases the new spec of TCP transport for NVMe over fabrics. In this talk, we would like to introduce the design, implementation and development plan of NVMe-oF TCP transport in SPDK . Currently, SPDK implements both TCP transport in host and target side and can be tested against Linux kernel solution with good interoperability. Besides, some experiments results will be presented to demonstrate the performance and scalability of SPDK's NVMe-oF TCP transport implementation. Moreover, we will introduce some techniques for the further performance improvement of SPDK's solution, e.g., (1) leveraging user space TCP stack (e.g., VPP/Seastar + DPDK) to replace the kernel TCP stack; (2) leveraging some features of hardware such as ADQ on Intel's E810 NIC. Compared with kernel solution, SPDK based NVMe-oF solution has much better per CPU core performance in different aspects (e.g., IOPS, latency).
