Programmable Calendar Queues for High-Speed Packet Scheduling

Programmable Calendar Queues for High-Speed Packet Scheduling

Explore a 22-minute conference talk from USENIX NSDI '20 on programmable calendar queues for high-speed packet scheduling. Delve into the limitations of traditional packet schedulers and discover how the calendar queue abstraction can support dynamic priority escalation. Learn about the implementation of programmable calendar queues using dataplane primitives or control-plane commands, and their ability to emulate diverse scheduling policies. Examine case studies demonstrating the application of this abstraction to improve delay guarantees, fairness, and short flow prioritization. Gain insights from evaluations using custom simulations and a small-scale testbed, and understand the potential impact on network performance and flexibility.