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June 25 - 27 - Beijing, China
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Tuesday, June 26 • 15:30 - 16:10
A Novel Flow Network Graph Based Scheduling Approach in Kubernetes - Zefeng (Kevin) Wang, Huawei (slides attached)

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Today’s Kubernetes clusters can comprise of 5,000-10,000 nodes, increase by an order of magnitude from original design specs. The default Kubernetes scheduler dates back from earlier more modest deployments. It is queue-based, processing unscheduled pods in a sequential fashion. For a large Kubernetes cluster, such scheduler processing logic can introduce long, even unbounded scheduling latencies, negatively affecting overall throughput for workload deployments.

This talk outlines how Kubernetes is a victim of its own success, scheduling-wise. It lays out the current pod queuing challenges and describes a novel scheduling approach based on Flow Network Graph technique, enabling low workload scheduling latencies at scale. The presentation details the resulting extreme efficiencies and high-quality placement decisions of such an approach and the accompanying pluggable scheduling policies.

avatar for Zefeng (Kevin) Wang

Zefeng (Kevin) Wang

Lead of Cloud Native Open Source Team, Huawei
Kevin Wang is a contributor in the CNCF community since its beginning, leader of the cloud native open source team at Huawei, and co-founder of the CNCF KubeEdge, Volcano and Karmada projects.Kevin has contributed to Kubenretes upstream for years and now spends 100% of his work and... Read More →

Tuesday June 26, 2018 15:30 - 16:10 CST