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<link rel="icon" href="/images/favicon.ico"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta property="og:title" content="Arthas"><meta property="og:image:alt" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta property="og:image" content="/images/arthas_mate_image.png"><meta property="og:description" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="600"><meta property="twitter:image:src" content="/images/arthas_mate_image.png"><meta property="twitter:image:alt" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta itemprop="name" content="Arthas"><meta itemprop="image" content="/images/arthas_mate_image.png"><meta itemprop="description" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><script>
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</script><meta name="aes-config" content="pid=xux-opensource&user_type=101&uid=&username=&dim10=arthas"><script src="//g.alicdn.com/alilog/mlog/aplus_v2.js" id="beacon-aplus" exparams="clog=o&aplus&sidx=aplusSidx&ckx=aplusCkx"></script><script src="//g.alicdn.com/aes/??tracker/1.0.34/index.js,tracker-plugin-pv/2.4.5/index.js,tracker-plugin-event/1.2.5/index.js,tracker-plugin-jserror/1.0.13/index.js,tracker-plugin-api/1.1.14/index.js,tracker-plugin-perf/1.1.8/index.js,tracker-plugin-eventTiming/1.0.4/index.js"></script><title>arthas 常用命令介绍 | arthas</title><meta name="description" content="Arthas是一款由Alibaba开源的强大Java诊断工具它能够帮助开发者在不修改代码、不重启应用程序的前提下对线上问题进行快速诊断和定位。以下是Arthas中一些常用命令的介绍这些命令覆盖了从JVM监控、类加载信息查询到性能分析等多个方面1. **JVM相关信息查询** - **jv">
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href="/doc/expert/user-question-history13510.html" class="sidebar-item" aria-label="查看实时jvm内存大小"><!--[--><!--]--> 查看实时jvm内存大小 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history14840.html" class="sidebar-item" aria-label="Unsupported class file major version 61 using arthas 3.6.3"><!--[--><!--]--> Unsupported class file major version 61 using arthas 3.6.3 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15736.html" class="sidebar-item" aria-label="arthas 中jad参数"><!--[--><!--]--> arthas 中jad参数 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11444.html" class="sidebar-item" aria-label="arthas 命令解释"><!--[--><!--]--> arthas 命令解释 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11784.html" class="sidebar-item" aria-label="arthas使用的各类方式有哪些"><!--[--><!--]--> arthas使用的各类方式有哪些 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history12716.html" class="sidebar-item" aria-label="arthas 怎么查看堆内存太高"><!--[--><!--]--> arthas 怎么查看堆内存太高 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13511.html" class="sidebar-item" aria-label="arthas方法运行后查看成员变量"><!--[--><!--]--> arthas方法运行后查看成员变量 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history14843.html" class="sidebar-item" aria-label="arthas 支持jdk 20么"><!--[--><!--]--> arthas 支持jdk 20么 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15737.html" class="sidebar-item" aria-label="进程停了 arthas也会同步停止么"><!--[--><!--]--> 进程停了 arthas也会同步停止么 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11450.html" class="sidebar-item" aria-label="arthas 分析thread线程卡住"><!--[--><!--]--> arthas 分析thread线程卡住 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11795.html" class="sidebar-item" aria-label="使用arthas查看成员变量值具体怎么做"><!--[--><!--]--> 使用arthas查看成员变量值具体怎么做 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history12740.html" class="sidebar-item" aria-label="arthas怎么分析cpu很高"><!--[--><!--]--> arthas怎么分析cpu很高 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13512.html" class="sidebar-item" aria-label="如何查看java内存增长哪些对象"><!--[--><!--]--> 如何查看java内存增长哪些对象 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15167.html" class="sidebar-item" aria-label="介绍一下arthas"><!--[--><!--]--> 介绍一下arthas <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15738.html" class="sidebar-item" aria-label="arthas如何查看hashmap的值"><!--[--><!--]--> arthas如何查看hashmap的值 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11451.html" class="sidebar-item" aria-label="arthas 怎么排查cpu占用过高"><!--[--><!--]--> arthas 怎么排查cpu占用过高 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11809.html" class="sidebar-item" aria-label="linux下的arthas 具体怎么用?(使用教程)"><!--[--><!--]--> linux下的arthas 具体怎么用?(使用教程) <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history12741.html" class="sidebar-item" aria-label="如何使用arthas查看系统哪个地方内存占用过大"><!--[--><!--]--> 如何使用arthas查看系统哪个地方内存占用过大 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13513.html" class="sidebar-item" aria-label="arthas 监听成员变量值的方法是什么?"><!--[--><!--]--> arthas 监听成员变量值的方法是什么? <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15543.html" class="sidebar-item" aria-label="arthas中tt命令如何查看方法入参的具体命令"><!--[--><!--]--> arthas中tt命令如何查看方法入参的具体命令 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15739.html" class="sidebar-item" aria-label="arthas可以监听私有方法吗"><!--[--><!--]--> arthas可以监听私有方法吗 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11452.html" class="sidebar-item" aria-label="arthas 查看方法耗时"><!--[--><!--]--> arthas 查看方法耗时 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11810.html" class="sidebar-item" aria-label="arthas查看方法耗时"><!--[--><!--]--> arthas查看方法耗时 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13448.html" class="sidebar-item" aria-label="如何使用arthas分析慢查询"><!--[--><!--]--> 如何使用arthas分析慢查询 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13522.html" class="sidebar-item" aria-label="Connect to telnet server error: 127.0.0.1 3658"><!--[--><!--]--> Connect to telnet server error: 127.0.0.1 3658 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15726.html" class="sidebar-item" aria-label="arthas 如何查询static变量"><!--[--><!--]--> arthas 如何查询static变量 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15740.html" class="sidebar-item" aria-label="arthas 分析内存升高的方法"><!--[--><!--]--> arthas 分析内存升高的方法 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11453.html" class="sidebar-item" aria-label="arthas 怎样查看方法耗时"><!--[--><!--]--> arthas 怎样查看方法耗时 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history11814.html" class="sidebar-item" aria-label="arthas 怎么排查内存泄漏"><!--[--><!--]--> arthas 怎么排查内存泄漏 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13504.html" class="sidebar-item" aria-label="如何查看实时jvm内存大小占用"><!--[--><!--]--> 如何查看实时jvm内存大小占用 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history14763.html" class="sidebar-item" aria-label="利用Arthas排查NoSuchMethodError"><!--[--><!--]--> 利用Arthas排查NoSuchMethodError <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15728.html" class="sidebar-item" aria-label="arthas 获取成员变量"><!--[--><!--]--> arthas 获取成员变量 <!--[--><!--]--></a><!----></li><li><a aria-current="page" href="/doc/expert/user-question-history11454.html" class="router-link-active router-link-exact-active router-link-active sidebar-item active" aria-label="arthas 常用命令介绍"><!--[--><!--]--> arthas 常用命令介绍 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history12453.html" class="sidebar-item" aria-label="arthas 怎么查看内存情况?"><!--[--><!--]--> arthas 怎么查看内存情况? <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history13506.html" class="sidebar-item" aria-label="如何查看java内存增长哪些对象"><!--[--><!--]--> 如何查看java内存增长哪些对象 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history14831.html" class="sidebar-item" aria-label="Dashboard 命令cpuUsage长期在90%左右"><!--[--><!--]--> Dashboard 命令cpuUsage长期在90%左右 <!--[--><!--]--></a><!----></li><li><a href="/doc/expert/user-question-history15729.html" class="sidebar-item" aria-label="arthas 怎么查看变量内容"><!--[--><!--]--> arthas 怎么查看变量内容 <!--[--><!--]--></a><!----></li><!--]--></ul></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case" rel="noopener noreferrer" target="_blank" aria-label="用户案例"><!--[--><!--]--><span>用户案例</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas" rel="noopener noreferrer" target="_blank" aria-label="Star me at github"><!--[--><!--]--><span>Star me at github</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md" rel="noopener noreferrer" target="_blank" aria-label="编译调试/参与贡献"><!--[--><!--]--><span>编译调试/参与贡献</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/releases" rel="noopener noreferrer" target="_blank" aria-label="Release Notes"><!--[--><!--]--><span>Release Notes</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a href="/doc/contact-us.md" class="sidebar-item" aria-label="QQ 群/钉钉群"><!--[--><!--]--> QQ 群/钉钉群 <!--[--><!--]--></a><!----></li><!--]--></ul></li><!--]--></ul><!--[--><!--]--></aside><!--]--><!--[--><main class="page" data-v-fdd717e0><!--[--><!--]--><div class="right-menu-padding theme-default-content" data-v-fdd717e0><!--[--><!--]--><div class="right-menu-wrapper" data-v-fdd717e0 data-v-64666cd5><div class="right-menu-margin" data-v-64666cd5><div class="right-menu-title" data-v-64666cd5>目录</div><div class="right-menu-content" data-v-64666cd5><!--[--><!--]--></div></div></div><div data-v-fdd717e0><h2 id="用户问题" tabindex="-1"><a class="header-anchor" href="#用户问题" aria-hidden="true">#</a> 用户问题 </h2><p>arthas 常用命令介绍</p><hr><h2 id="专家官方解答" tabindex="-1"><a class="header-anchor" href="#专家官方解答" aria-hidden="true">#</a> 专家官方解答 </h2><p>Arthas是一款由Alibaba开源的强大Java诊断工具它能够帮助开发者在不修改代码、不重启应用程序的前提下对线上问题进行快速诊断和定位。以下是Arthas中一些常用命令的介绍这些命令覆盖了从JVM监控、类加载信息查询到性能分析等多个方面</p><ol><li><p><strong>JVM相关信息查询</strong></p><ul><li><strong>jvm</strong>: 查看当前JVM的基本信息。</li><li><strong>memory</strong>: 查看JVM内存使用情况。</li><li><strong>sysprop</strong>: 查看和修改JVM系统属性。</li><li><strong>sysenv</strong>: 查看JVM环境变量。</li><li><strong>vmoption</strong>: 查看和修改JVM诊断相关的选项。</li><li><strong>heapdump</strong>: 生成Java堆转储文件类似于jmap的功能。</li></ul></li><li><p><strong>类与类加载器操作</strong></p><ul><li><strong>sc</strong>: 查看已加载的类信息。</li><li><strong>sm</strong>: 查看类方法信息。</li><li><strong>classloader</strong>: 查看类加载器的详细信息,包括类加载路径等。</li><li><strong>redefine/retransform</strong>: 动态修改已加载类的字节码,分别用于重新定义和转换类。</li></ul></li><li><p><strong>监控与性能分析</strong></p><ul><li><strong>monitor</strong>: 方法执行监控,可以统计方法调用次数、总耗时等。</li><li><strong>trace</strong>: 方法内部调用路径分析,输出方法调用链路及其耗时。</li><li><strong>watch</strong>: 实时观测方法执行数据,可在方法执行前后插入观测点。</li><li><strong>profiler</strong>: 使用async-profiler生成火焰图进行性能瓶颈分析。</li><li><strong>jfr</strong>: 动态开启JDK Flight Recorder记录进行高级性能分析。</li></ul></li><li><p><strong>调试辅助</strong></p><ul><li><strong>thread</strong>: 查看当前JVM线程堆栈信息。</li><li><strong>stack</strong>: 显示指定方法被调用的调用路径。</li><li><strong>jad</strong>: 反编译已加载类的源码。</li><li><strong>mc</strong>: 内存编译器直接在JVM内存中编译Java源码为字节码。</li></ul></li><li><p><strong>系统操作与辅助命令</strong></p><ul><li><strong>base64/grep/cat/echo</strong>: 类似Linux命令提供文本处理、编码转换等功能。</li><li><strong>history</strong>: 查看命令历史。</li><li><strong>session</strong>: 查看当前会话信息。</li><li><strong>auth</strong>: 鉴权管理,确保操作安全。</li><li><strong>jobs/kill/fg/bg</strong>: 管理后台异步任务,适合长时间监控场景。</li></ul></li><li><p><strong>其它实用功能</strong></p><ul><li><strong>logger</strong>: 查看和修改日志配置。</li><li><strong>mbean</strong>: 查看MBean信息用于JMX管理。</li><li><strong>vmtool</strong>: 在JVM中查询对象、执行强制GC等操作。</li><li><strong>options</strong>: 查看或设置Arthas全局开关。</li><li><strong>dump</strong>: 将已加载类的字节码dump到磁盘。</li></ul></li></ol><p>这些命令的综合运用能极大地提高问题定位和排查效率让Java应用的线上诊断变得更为直观和高效。更多详细信息和使用示例可以通过查阅<a href="https://arthas.aliyun.com/doc/" target="_blank" rel="noopener noreferrer">Arthas官方文档<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span></a>获得。</p><!----><h2 id="参考链接" tabindex="-1"><a class="header-anchor" href="#参考链接" aria-hidden="true">#</a> 参考链接 </h2><p><a href="/doc/commands.html" class="">命令列表</a></p><p><a href="/doc/expert/user-question-history11442.html" class="">专家经验Arthas 介绍</a></p><!----><h2 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