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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 Wang

Zefeng Wang

Principal Engineer, Huawei
Zefeng(Kevin) Wang is a Principal Engineer at Huawei Cloud. Currently working on Kubernetes, KubeEdge, Volcano and Huawei Cloud container products. He is the lead of Huawei Kubernetes & Cloud Native open source team, co-founder of CNCF KubeEdge and CNCF Volcano.

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