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深入分析Kubernetes Scheduler的优先级队列 - WaltonWang's Blog
source link: https://my.oschina.net/jxcdwangtao/blog/1811164?
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从1.9版本开始，Kubernetes实现了基于Pod优先级的调度队列，一方面提供高优先级的Pod优先被调度的能力，另一方面减轻抢占式调度时潜在的High Priority Pod Starvation的问题，截止Kubernetes 1.10，PriorityPod Feature Gate仍处于Alpha。本文将从源码的层面对PriorityQueue进行深入分析，了解内部的两个Sub-Queue以及在什么情况下操作这两个Sub-Queue的，又是如何操作的，另外也提醒当前实现还可能存在的问题。
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