| <!DOCTYPE html> |
| <html class="writer-html5" lang="en" > |
| <head> |
| <meta charset="utf-8" /> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge" /> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| <link rel="shortcut icon" href="../img/favicon.ico" /> |
| <title>verticle-count - ServiceComb Java Chassis 开发指南</title> |
| <link rel="stylesheet" href="../css/theme.css" /> |
| <link rel="stylesheet" href="../css/theme_extra.css" /> |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/styles/github.min.css" /> |
| |
| <script> |
| // Current page data |
| var mkdocs_page_name = "verticle-count"; |
| var mkdocs_page_input_path = "transports/verticle-count.md"; |
| var mkdocs_page_url = null; |
| </script> |
| |
| <script src="../js/jquery-3.6.0.min.js" defer></script> |
| <!--[if lt IE 9]> |
| <script src="../js/html5shiv.min.js"></script> |
| <![endif]--> |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/highlight.min.js"></script> |
| <script>hljs.initHighlightingOnLoad();</script> |
| </head> |
| |
| <body class="wy-body-for-nav" role="document"> |
| |
| <div class="wy-grid-for-nav"> |
| <nav data-toggle="wy-nav-shift" class="wy-nav-side stickynav"> |
| <div class="wy-side-scroll"> |
| <div class="wy-side-nav-search"> |
| <a href="../index.html" class="icon icon-home"> ServiceComb Java Chassis 开发指南 |
| </a> |
| </div> |
| |
| <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu"> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../toc.html">目录</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../index.html">概述</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../start/catalog.html">快速入门</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../start/design.html">设计选型参考</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../build-provider/definition/service-definition.html">微服务定义</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../build-provider/catalog.html">开发服务提供者</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../build-consumer/catalog.html">开发服务消费者</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../general-development/catalog.html">通用功能开发</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">多样化的通信协议功能参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="introduction.html">多协议介绍</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="rest-over-servlet.html">REST over Servlet</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="rest-over-vertx.html">REST over Vertx</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="http2.html">REST over HTTP2</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="highway-rpc.html">Highway</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">多样化的服务注册与发现功能参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../registry/introduction.html">注册发现说明</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../registry/service-center.html">使用服务中心</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../registry/local-registry.html">本地注册发现</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../registry/distributed.html">去中心化注册发现</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">管理服务配置</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../config/general-config.html">通用配置说明</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../config/read-config.html">在程序中读取配置信息</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">服务治理功能参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../references-handlers/intruduction.html">处理链介绍</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../references-handlers/loadbalance.html">负载均衡</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../references-handlers/ratelimit.html">限流</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../references-handlers/router.html">灰度发布</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../references-handlers/fault-injection.html">故障注入</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../references-handlers/governance.html">流量特征治理</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../references-handlers/fail-retry.html">快速失败和重试</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">网关功能参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../edge/open-service.html">介绍</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../edge/by-servicecomb-sdk.html">使用 Edge Service 做网关</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../edge/zuul.html">使用 `zuul` 和 `spring cloud gateway` 做网关</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../edge/nginx.html">nginx 网关简单介绍</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">安全特性参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../references-handlers/publickey.html">公钥认证</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../security/tls.html">使用TLS通信</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../security/shi-yong-rsa-ren-zheng.html">使用RSA认证</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">服务打包和运行</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../packaging/standalone.html">以standalone模式打包</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../packaging/web-container.html">以WEB容器模式打包</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">专题文章</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../using-java-chassis-in-spring-boot/using-java-chassis-in-spring-boot.html">在Spring Boot中使用java chassis</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../featured-topics/features.html">新功能介绍系列文章</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../featured-topics/compatibility.html">兼容问题和兼容性策略</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../featured-topics/upgrading.html">升级指导系列文章</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../featured-topics/performance.html">性能问题分析和调优</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">常用配置项参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../config-reference/rest-transport-client.html">REST Transport Client 配置项</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../config-reference/config-center-client.html">Config Center Client 配置项</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../config-reference/service-center-client.html">Service Center Client 配置项</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../config-reference/kie-client.html">ServiceComb Kie Client 配置项</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">常见问题</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../question-and-answer/faq.html">FAQ</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../question-and-answer/question_answer.html">Q & A</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../question-and-answer/interface-compatibility.html">微服务接口兼容常见问题</a> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </nav> |
| |
| <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> |
| <nav class="wy-nav-top" role="navigation" aria-label="Mobile navigation menu"> |
| <i data-toggle="wy-nav-top" class="fa fa-bars"></i> |
| <a href="../index.html">ServiceComb Java Chassis 开发指南</a> |
| |
| </nav> |
| <div class="wy-nav-content"> |
| <div class="rst-content"><div role="navigation" aria-label="breadcrumbs navigation"> |
| <ul class="wy-breadcrumbs"> |
| <li><a href="../index.html" class="icon icon-home" alt="Docs"></a> »</li> |
| <li>verticle-count</li> |
| <li class="wy-breadcrumbs-aside"> |
| </li> |
| </ul> |
| <hr/> |
| </div> |
| <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> |
| <div class="section" itemprop="articleBody"> |
| |
| <h1 id="verticle-count">verticle-count</h1> |
| <h2 id="_1">名称及默认值</h2> |
| <ul> |
| <li>1.2.0之前的版本 </li> |
| </ul> |
| <p>命名为thread-count，且默认值为1，这存在以下问题： </p> |
| <ul> |
| <li>名字有歧义。ServiceComb底层基于vertx，通信层逻辑均由verticle承载，运行于eventloop线程中，并不会再创建独立的线程， |
| 所以thread-count实际表示的是创建的verticle实例的个数，并不是线程数。</li> |
| <li> |
| <p>默认值偏小。旧版本选择了最保守的默认值，导致大部分场景都需要做这个参数的调整。</p> |
| </li> |
| <li> |
| <p>1.2.0及其之后的版本 </p> |
| </li> |
| </ul> |
| <p>重命名为verticle-count。同时允许旧的thread-count，但是会打印warning日志，提醒切换为新配置项。 |
| 默认值规则： </p> |
| <ul> |
| <li>如果CPU数小于8，则取CPU数</li> |
| <li>如果CPU数大于等于8，则为8</li> |
| </ul> |
| <h2 id="eventloopverticle">Eventloop与verticle实例的关系：</h2> |
| <p>假设CPU为2，则vertx默认创建 2 * CPU， 即4个Eventloop线程 |
| 假设配置server verticle count和client verticle count均为3，则他们的关系如下：</p> |
| <p><img alt="" src="../assets/eventloop-and-verticle.png" /> </p> |
| <p>因为在Eventloop中不允许执行任何阻塞动作，再结合上图，我们可以知道，当充分利用了CPU之后，再增加verticle实例是没有意义的， |
| 所以1.2.0之后的版本的缺省值对于多数情况是最优的配置。</p> |
| |
| </div> |
| </div><footer> |
| |
| <hr/> |
| |
| <div role="contentinfo"> |
| <!-- Copyright etc --> |
| </div> |
| |
| Built with <a href="https://www.mkdocs.org/">MkDocs</a> using a <a href="https://github.com/readthedocs/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. |
| </footer> |
| |
| </div> |
| </div> |
| |
| </section> |
| |
| </div> |
| |
| <div class="rst-versions" role="note" aria-label="Versions"> |
| <span class="rst-current-version" data-toggle="rst-current-version"> |
| |
| |
| |
| </span> |
| </div> |
| <script>var base_url = '..';</script> |
| <script src="../js/theme_extra.js" defer></script> |
| <script src="../js/theme.js" defer></script> |
| <script src="../search/main.js" defer></script> |
| <script defer> |
| window.onload = function () { |
| SphinxRtdTheme.Navigation.enable(true); |
| }; |
| </script> |
| |
| </body> |
| </html> |
