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Hostping - Diagnosing Intra-host Network Bottlenecks in RDMA Servers

USENIX via YouTube

Overview

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Explore a 15-minute conference talk from USENIX NSDI '23 that introduces Hostping, a pioneering system for monitoring and diagnosing intra-host network bottlenecks in RDMA servers. Learn about the challenges posed by increasing RNIC line rates and how intra-host networking can become a performance bottleneck for network applications. Discover the symptoms of intra-host bottlenecks and understand why existing diagnosis mechanisms fall short. Gain insights into Hostping's innovative approach of conducting loopback tests between RNICs and endpoints within the host to measure intra-host latency and bandwidth. Uncover how this system not only identifies known bottlenecks but also reveals six previously unnoticed issues, potentially revolutionizing RDMA server performance optimization.

Syllabus

NSDI '23 - Hostping: Diagnosing Intra-host Network Bottlenecks in RDMA Servers

Taught by

USENIX

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