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从网络延迟到 Cgroups 所导致的 slab 缓存堆积
在某次群友分享学习的时候了解到 Github 团队定位一个问题的过程。 一个HTTP服务在连接上观察到超过100ms的延迟。 在观测到服务超时的时刻,后端MySQL数据库的查询都在几毫秒内完成。 现象仅仅在客户端可以观测到。 最后到定位 cgroups 苟延残喘导致的缓存堆积 ...
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