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  1. Computer Science

Operating System

PreviousHTTP/2 in ActionNextBasic

Last updated 4 years ago

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首先需要了解操作系统的基本原理：

  • 基础

  • 系统初始化

然后需要用到实践中去，比如常见的性能工具：

以及性能优化手段：

  • 常用的性能诊断工具

  • CPU

    • 平均负载

    • CPU 上下文切换

    • CPU 使用率。使用率过高的常见原因有：

      • 上下文切换

      • iowait 过高，表现为进程长时间处于 D 状态，或较多进程处于 D 状态

      • 僵尸进程过多

      • 软中断过多

    • CPU 优化思路

  • 内存

    • Linux 内存的一些基本原理

    • Buffer 与 Cache 的区别

    • 缓存命中率

    • 内存泄漏

    • Swap

    • 优化思路

  • 磁盘

    • 文件系统

    • 磁盘

    • 优化思路

  • 网络

  • 监控系统建设