Yiwen Zhang

Title: Yiwen Zhang - Innovator in Admission Control Systems

Introduction

Yiwen Zhang is a notable inventor based in Ann Arbor, MI (US). He has made significant contributions to the field of distributed systems, particularly in the area of admission control for latency-critical remote procedure calls in data centers. His innovative approach addresses the challenges of ensuring quality of service in high-demand environments.

Latest Patents

Yiwen Zhang holds a patent titled "Admission control for latency-critical remote procedure calls in datacenters." This patent describes a distributed sender-driven Admission Control System (ACS) that leverages Weighted-Fair Quality of Service (QoS) queues. The system guarantees RPC level latency service level objectives (SLOs) by judiciously selecting QoS weights and managing traffic across QoS queues. The ACS effectively installs cluster-wide RPC latency SLOs by mapping latency-sensitive RPCs to higher weight QoS queues. It also adapts to overloads by apportioning latency-sensitive RPCs among QoS queues based on measured completion times. Notably, when network demand spikes, the ACS achieves a latency SLO significantly lower than state-of-the-art congestion control methods.

Career Highlights

Yiwen Zhang is currently employed at Google Inc., where he continues to innovate and develop solutions that enhance the performance of data centers. His work focuses on improving the efficiency and reliability of remote procedure calls, which are critical for modern distributed applications.

Collaborations

Yiwen collaborates with talented colleagues, including Gautam Kumar and Nandita Dukkipati, who contribute to the advancement of technology in their respective fields.

Conclusion

Yiwen Zhang's contributions to admission control systems exemplify the importance of innovation in technology. His patent and ongoing work at Google Inc. highlight his commitment to improving the efficiency of data centers. His efforts are paving the way for more reliable and efficient distributed systems.