报告题目：Gimbal: Enabling Multi-tenant Storage Disaggregation on SmartNIC JBOFs
报告地点：腾讯会议 331 184 288
Emerging SmartNIC-based disaggregated NVMe storage has become a promising storage infrastructure due to its competitive IO performance and low cost. These SmartNIC JBOFs are shared among multiple co-resident applications, and there is a need for the platform to ensure fairness, QoS, and high utilization. Unfortunately, given the limited computing capability of the SmartNICs and the non-deterministic nature of NVMe drives, it is challenging to provide such support on today’s SmartNIC JBOFs.
In this talk, I will present Gimbal, a software storage switch that orchestrates IO traffic between Ethernet ports and NVMe drives for co-located tenants. It enables efficient multi-tenancy on SmartNIC JBOFs using the following techniques: a delay-based SSD congestion control algorithm, dynamic estimation of SSD write costs, a fair scheduler that operates at the granularity of a virtual slot, and an end-to-end credit-based flow control channel. Our prototyped system not only achieves up to X6.6 better utilization and 62.6% less tail latency but also improves the fairness for complex workloads. It also improves a commercial key-value store performance in a multi-tenant environment with X1.7 better throughput and 35.0% less tail latency on average.
Ming Liu is an Assistant Professor in the Computer Sciences Department at the University of Wisconsin-Madison. Prior to joining UW-Madison, He received his PhD from the University of Washington in 2020 and worked as a postdoctoral researcher at VMware Research Group. He works on networking and systems, with a focus on network-based hardware acceleration (including SmartNICs/DPUs, customized interconnects, RMT switches, and network-attached active/passive devices).