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05 | 案例篇：系统的 CPU 使用率很高，但为啥却找不到高 CPU 的应用？同样注意，下面所有命令都默认以 root 用户运行，如果你是用普通用户身份登陆系统，请运行 sudo su root 命令切换到 root 用户。首先，我们在第一个终端，执行下面的命令运行 Nginx 和 ...

Linux性能优化实战-极客课程笔记(1)

01 | 基础篇：到底应该怎么理解“平均负载”？平均负载是指单位时间内，系统处于可运行状态和不可中断状态的平均进程数，也就是平均活跃进程数，它和 CPU 使用率并没有直接关系。可运行状态的进程，是指正在使用 CPU 或者正在等待 CPU 的进程，也就是我们常用 ps 命令看到的，处于 ...

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