https://pothos.dpdns.org/tags/%E6%9C%8D%E5%8A%A1%E5%99%A8%E6%80%A7%E8%83%BD/Recent content in 服务器性能 on Ralph's BlogHugo -- 0.147.7zh-cnWed, 20 May 2026 00:00:00 +0000https://pothos.dpdns.org/posts/66.%E6%9C%8D%E5%8A%A1%E5%99%A8%E6%80%A7%E8%83%BD%E4%B8%8E%E5%AE%B9%E5%99%A8%E6%9C%8D%E5%8A%A1%E9%83%A8%E7%BD%B2%E4%BC%98%E5%8C%96%E6%8C%87%E5%8D%97/Wed, 20 May 2026 00:00:00 +0000https://pothos.dpdns.org/posts/66.%E6%9C%8D%E5%8A%A1%E5%99%A8%E6%80%A7%E8%83%BD%E4%B8%8E%E5%AE%B9%E5%99%A8%E6%9C%8D%E5%8A%A1%E9%83%A8%E7%BD%B2%E4%BC%98%E5%8C%96%E6%8C%87%E5%8D%97/<h1 id="66-服务器性能与容器服务部署优化指南">66. 服务器性能与容器服务部署优化指南</h1> <p><img alt="服务器性能封面图" loading="lazy" src="https://imgcdn.dpdns.org/llmhub/server-performance-cover.png"></p> <h2 id="目录">目录</h2> <details> <summary>点击展开目录</summary> <ul> <li><a href="#66-%E6%9C%8D%E5%8A%A1%E5%99%A8%E6%80%A7%E8%83%BD%E4%B8%8E%E5%AE%B9%E5%99%A8%E6%9C%8D%E5%8A%A1%E9%83%A8%E7%BD%B2%E4%BC%98%E5%8C%96%E6%8C%87%E5%8D%97">66. 服务器性能与容器服务部署优化指南</a> <ul> <li><a href="#%E7%9B%AE%E5%BD%95">目录</a></li> <li><a href="#%E4%B8%80%E4%B8%BA%E4%BB%80%E4%B9%88%E9%83%A8%E7%BD%B2%E4%BA%86%E6%9C%8D%E5%8A%A1%E5%8D%B4%E8%BF%98%E6%98%AF%E6%85%A2">一、为什么部署了服务却还是慢</a></li> <li><a href="#%E4%BA%8C%E5%BD%B1%E5%93%8D%E6%9C%8D%E5%8A%A1%E6%80%A7%E8%83%BD%E7%9A%84%E6%95%B4%E4%BD%93%E9%93%BE%E8%B7%AF">二、影响服务性能的整体链路</a> <ul> <li><a href="#21-%E8%AF%B7%E6%B1%82%E4%BB%8E%E5%93%AA%E9%87%8C%E5%BC%80%E5%A7%8B%E5%8F%98%E6%85%A2">2.1 请求从哪里开始变慢</a></li> <li><a href="#22-%E5%AE%B9%E5%99%A8%E6%85%A2%E4%B8%8D%E7%AD%89%E4%BA%8E%E5%8F%AA%E6%9C%89-docker-%E6%85%A2">2.2 容器慢不等于只有 Docker 慢</a></li> </ul> </li> <li><a href="#%E4%B8%89cpu%E6%9C%80%E5%AE%B9%E6%98%93%E8%A2%AB%E5%BF%BD%E7%95%A5%E7%9A%84%E7%AC%AC%E4%B8%80%E8%B5%84%E6%BA%90">三、CPU：最容易被忽略的第一资源</a> <ul> <li><a href="#31-cpu-%E4%B8%8D%E5%A4%9F%E6%97%B6%E4%BC%9A%E5%87%BA%E7%8E%B0%E4%BB%80%E4%B9%88%E7%8E%B0%E8%B1%A1">3.1 CPU 不够时会出现什么现象</a></li> <li><a href="#32-%E5%AE%B9%E5%99%A8%E5%9C%BA%E6%99%AF%E4%B8%8B-cpu-%E7%9A%84%E5%B8%B8%E8%A7%81%E5%9D%91">3.2 容器场景下 CPU 的常见坑</a></li> <li><a href="#33-cpu-%E6%8E%92%E6%9F%A5%E9%87%8D%E7%82%B9">3.3 CPU 排查重点</a></li> </ul> </li> <li><a href="#%E5%9B%9B%E5%86%85%E5%AD%98%E5%BE%88%E5%A4%9A%E6%9C%8D%E5%8A%A1%E4%B8%8D%E6%98%AF%E6%85%A2%E8%80%8C%E6%98%AF%E8%A2%AB%E6%8C%A4%E5%8E%8B">四、内存：很多服务不是慢，而是被挤压</a> <ul> <li><a href="#41-%E5%86%85%E5%AD%98%E4%B8%8D%E8%B6%B3%E7%9A%84%E5%85%B8%E5%9E%8B%E8%A1%A8%E7%8E%B0">4.1 内存不足的典型表现</a></li> <li><a href="#42-%E5%AE%B9%E5%99%A8%E5%86%85%E5%AD%98%E7%9B%B8%E5%85%B3%E9%97%AE%E9%A2%98">4.2 容器内存相关问题</a></li> <li><a href="#43-%E5%86%85%E5%AD%98%E6%8E%92%E6%9F%A5%E9%87%8D%E7%82%B9">4.3 内存排查重点</a></li> </ul> </li> <li><a href="#%E4%BA%94%E7%A3%81%E7%9B%98%E4%B8%8E-io%E6%97%A5%E5%BF%97%E6%95%B0%E6%8D%AE%E5%BA%93%E9%95%9C%E5%83%8F%E5%B1%82%E9%83%BD%E4%BC%9A%E6%8B%96%E6%85%A2%E6%9C%8D%E5%8A%A1">五、磁盘与 I/O：日志、数据库、镜像层都会拖慢服务</a> <ul> <li><a href="#51-%E7%A3%81%E7%9B%98%E6%85%A2%E4%BC%9A%E8%AE%A9%E5%93%AA%E4%BA%9B%E6%9C%8D%E5%8A%A1%E5%85%88%E5%87%BA%E9%97%AE%E9%A2%98">5.1 磁盘慢会让哪些服务先出问题</a></li> <li><a href="#52-%E5%AE%B9%E5%99%A8%E5%9C%BA%E6%99%AF%E4%B8%8B-io-%E7%9A%84%E7%89%B9%E6%AE%8A%E9%97%AE%E9%A2%98">5.2 容器场景下 I/O 的特殊问题</a></li> <li><a href="#53-%E7%A3%81%E7%9B%98%E6%8E%92%E6%9F%A5%E9%87%8D%E7%82%B9">5.3 磁盘排查重点</a></li> </ul> </li> <li><a href="#%E5%85%AD%E7%BD%91%E7%BB%9C%E4%B8%8E%E5%B8%A6%E5%AE%BD%E4%B8%8D%E5%8F%AA%E6%98%AF%E7%BD%91%E6%85%A2%E8%BF%99%E4%B9%88%E7%AE%80%E5%8D%95">六、网络与带宽：不只是“网慢”这么简单</a> <ul> <li><a href="#61-%E7%BD%91%E7%BB%9C%E6%80%A7%E8%83%BD%E5%8C%85%E5%90%AB%E5%93%AA%E4%BA%9B%E7%BB%B4%E5%BA%A6">6.1 网络性能包含哪些维度</a></li> <li><a href="#62-%E5%AE%B9%E5%99%A8%E7%BD%91%E7%BB%9C%E7%9A%84%E5%B8%B8%E8%A7%81%E5%BD%B1%E5%93%8D%E5%9B%A0%E7%B4%A0">6.2 容器网络的常见影响因素</a></li> <li><a href="#63-%E7%BD%91%E7%BB%9C%E6%8E%92%E6%9F%A5%E9%87%8D%E7%82%B9">6.3 网络排查重点</a></li> </ul> </li> <li><a href="#%E4%B8%83%E8%BF%9E%E6%8E%A5%E6%95%B0%E6%96%87%E4%BB%B6%E6%8F%8F%E8%BF%B0%E7%AC%A6%E4%B8%8E%E7%AB%AF%E5%8F%A3%E8%B5%84%E6%BA%90">七、连接数、文件描述符与端口资源</a> <ul> <li><a href="#71-%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%9E%E6%8E%A5%E6%95%B0%E4%BC%9A%E6%88%90%E4%B8%BA%E7%93%B6%E9%A2%88">7.1 为什么连接数会成为瓶颈</a></li> <li><a href="#72-%E5%AE%B9%E5%99%A8%E9%83%A8%E7%BD%B2%E6%97%B6%E5%B8%B8%E8%A7%81%E9%99%90%E5%88%B6%E9%A1%B9">7.2 容器部署时常见限制项</a></li> <li><a href="#73-%E8%BF%9E%E6%8E%A5%E7%B1%BB%E9%97%AE%E9%A2%98%E6%8E%92%E6%9F%A5%E9%87%8D%E7%82%B9">7.3 连接类问题排查重点</a></li> </ul> </li> <li><a href="#%E5%85%ABdocker-%E9%83%A8%E7%BD%B2%E5%AF%B9%E6%80%A7%E8%83%BD%E7%9A%84%E5%AE%9E%E9%99%85%E5%BD%B1%E5%93%8D">八、Docker 部署对性能的实际影响</a> <ul> <li><a href="#81-docker-%E4%B8%8D%E6%98%AF%E6%80%A7%E8%83%BD%E9%97%AE%E9%A2%98%E7%9A%84%E5%94%AF%E4%B8%80%E6%9D%A5%E6%BA%90">8.1 Docker 不是性能问题的唯一来源</a></li> <li><a href="#82-docker-%E7%9C%9F%E6%AD%A3%E4%BC%9A%E5%BD%B1%E5%93%8D%E6%80%A7%E8%83%BD%E7%9A%84%E5%9C%B0%E6%96%B9">8.2 Docker 真正会影响性能的地方</a></li> <li><a href="#83-%E5%AE%B9%E5%99%A8%E6%80%A7%E8%83%BD%E8%B0%83%E4%BC%98%E7%9A%84%E6%A0%B8%E5%BF%83%E6%80%9D%E8%B7%AF">8.3 容器性能调优的核心思路</a></li> </ul> </li> <li><a href="#%E4%B9%9D%E5%BA%94%E7%94%A8%E5%B1%82%E5%9B%A0%E7%B4%A0%E7%BA%BF%E7%A8%8B%E6%B1%A0%E8%BF%9E%E6%8E%A5%E6%B1%A0%E7%BC%93%E5%AD%98%E9%98%9F%E5%88%97%E9%95%BF%E5%BA%A6">九、应用层因素：线程池、连接池、缓存、队列长度</a> <ul> <li><a href="#91-%E4%B8%BA%E4%BB%80%E4%B9%88%E8%B5%84%E6%BA%90%E5%A4%9F%E7%94%A8%E6%9C%8D%E5%8A%A1%E8%BF%98%E6%98%AF%E6%85%A2">9.1 为什么资源够用服务还是慢</a></li> <li><a href="#92-%E5%BA%94%E7%94%A8%E5%B1%82%E5%B8%B8%E8%A7%81%E6%80%A7%E8%83%BD%E7%93%B6%E9%A2%88">9.2 应用层常见性能瓶颈</a></li> </ul> </li> <li><a href="#%E5%8D%81%E6%80%A7%E8%83%BD%E6%8E%92%E6%9F%A5%E7%9A%84%E6%8E%A8%E8%8D%90%E9%A1%BA%E5%BA%8F">十、性能排查的推荐顺序</a> <ul> <li><a href="#101-%E5%85%88%E7%9C%8B%E7%8E%B0%E8%B1%A1%E5%86%8D%E5%AE%9A%E5%B1%82%E7%BA%A7">10.1 先看现象，再定层级</a></li> <li><a href="#102-%E4%B8%80%E5%A5%97%E9%80%82%E5%90%88%E7%BA%BF%E4%B8%8A%E6%95%85%E9%9A%9C%E7%9A%84%E6%8E%92%E6%9F%A5%E6%B5%81%E7%A8%8B">10.2 一套适合线上故障的排查流程</a></li> </ul> </li> <li><a href="#%E5%8D%81%E4%B8%80%E5%B8%B8%E8%A7%81%E9%83%A8%E7%BD%B2%E5%9C%BA%E6%99%AF%E7%9A%84%E6%80%A7%E8%83%BD%E9%87%8D%E7%82%B9">十一、常见部署场景的性能重点</a> <ul> <li><a href="#111-nginx--%E7%BD%91%E5%85%B3%E7%B1%BB%E6%9C%8D%E5%8A%A1">11.1 Nginx / 网关类服务</a></li> <li><a href="#112-java--spring-boot-%E6%9C%8D%E5%8A%A1">11.2 Java / Spring Boot 服务</a></li> <li><a href="#113-python--nodejs-web-%E6%9C%8D%E5%8A%A1">11.3 Python / Node.js Web 服务</a></li> <li><a href="#114-mysql--postgresql--redis">11.4 MySQL / PostgreSQL / Redis</a></li> </ul> </li> <li><a href="#%E5%8D%81%E4%BA%8C%E7%9B%91%E6%8E%A7%E6%8C%87%E6%A0%87%E5%BA%94%E8%AF%A5%E6%80%8E%E4%B9%88%E5%BB%BA">十二、监控指标应该怎么建</a> <ul> <li><a href="#121-%E4%B8%BB%E6%9C%BA%E5%B1%82%E6%8C%87%E6%A0%87">12.1 主机层指标</a></li> <li><a href="#122-%E5%AE%B9%E5%99%A8%E5%B1%82%E6%8C%87%E6%A0%87">12.2 容器层指标</a></li> <li><a href="#123-%E5%BA%94%E7%94%A8%E5%B1%82%E6%8C%87%E6%A0%87">12.3 应用层指标</a></li> </ul> </li> <li><a href="#%E5%8D%81%E4%B8%89%E4%B8%9A%E5%8A%A1%E4%B8%8E%E5%B7%A5%E4%BD%9C%E4%B8%AD%E7%9A%84%E7%BB%8F%E9%AA%8C%E6%80%BB%E7%BB%93">十三、业务与工作中的经验总结</a></li> <li><a href="#%E5%8D%81%E5%9B%9B%E5%B8%B8%E8%A7%81%E8%AF%AF%E5%8C%BA">十四、常见误区</a></li> <li><a href="#%E5%8D%81%E4%BA%94%E9%9D%A2%E8%AF%95%E9%A2%98%E4%B8%8E%E6%A0%87%E5%87%86%E5%9B%9E%E7%AD%94">十五、面试题与标准回答</a> <ul> <li><a href="#151-%E5%9F%BA%E7%A1%80%E7%90%86%E8%A7%A3%E7%B1%BB">15.1 基础理解类</a></li> <li><a href="#152-%E6%8E%92%E6%9F%A5%E5%AE%9E%E6%88%98%E7%B1%BB">15.2 排查实战类</a></li> <li><a href="#153-%E5%AE%B9%E5%99%A8%E9%83%A8%E7%BD%B2%E7%B1%BB">15.3 容器部署类</a></li> </ul> </li> <li><a href="#%E5%8D%81%E5%85%AD%E6%80%BB%E7%BB%93">十六、总结</a></li> </ul> </li> </ul> </details> <h2 id="一为什么部署了服务却还是慢">一、为什么部署了服务却还是慢</h2> <p>很多人一看到服务性能差，第一反应就是：</p>