CPU性能诊断专家
北京、上海
社招
全职
研发 - 基础架构
职位描述
一、一句话定位 专攻在线业务 CPU 性能的诊断与优化专家——解决线上各类资源争抢、性能瓶颈、长尾延迟问题,把在线服务的性能与资源效率做上去。 二、你将负责什么 1. 性能诊断:定位线上 CPU 相关的资源争抢(CPU / cache / 内存带宽 / 锁 / IO)、毛刺与长尾延迟、吞吐瓶颈,尤其是混部 / 高并发场景下的干扰。 2. 性能剖析与调优:用 perf / eBPF / 火焰图等做 profiling,找到内核态 / 用户态热点,给出可落地的优化(代码 / runtime / NUMA / 绑核 / 内核参数)。 3. 资源隔离与 QoS:cgroup / 容器资源隔离、在离线混部的干扰抑制、CPU 拓扑 / NUMA 亲和,保障在线业务性能不被挤占。 4. 体系沉淀:性能基线 / 压测 / 容量评估,把性能纳入 SLO 与可观测,沉淀诊断方法论与自动化工具。
职位要求
投递

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