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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>通过arthas怎样排查项目中哪个对象泄露了或者占用内存太大 | arthas</title><meta name="description" content="要使用Arthas排查项目中哪个对象泄露了或占用内存过大可以遵循以下步骤1. **确认内存状况** 首先需要确认应用程序确实存在内存泄漏或异常的内存占用。使用Arthas的`memory`命令查看当前JVM的内存状态如堆内存、各代内存分区Eden、Survivor、Old Gen、">
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<!--[--><!--]--></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 分析内存身高的方法"><!--[--><!--]--> arthas 分析内存身高的方法 <!--[--><!--]--></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 href="/doc/expert/user-question-history11454.html" class="sidebar-item" 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="artahs 怎么查看内存情况?"><!--[--><!--]--> artahs 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 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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>通过arthas怎样排查项目中哪个对象泄露了或者占用内存太大</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>要使用Arthas排查项目中哪个对象泄露了或占用内存过大可以遵循以下步骤</p><ol><li><p><strong>确认内存状况</strong> 首先需要确认应用程序确实存在内存泄漏或异常的内存占用。使用Arthas的<code>memory</code>命令查看当前JVM的内存状态如堆内存、各代内存分区Eden、Survivor、Old Gen、非堆内存等的使用情况。这一步骤帮助你识别内存是否处于异常使用的状态以及初步判断哪部分内存区域可能存在泄漏。</p></li><li><p><strong>监控内存变化</strong> 多次运行<code>memory</code>命令并观察特定内存区域的变化。正常情况下,内存使用应有涨有落,若发现某部分内存持续增长而几乎不减少,则高度怀疑该区域存在内存泄漏。</p></li><li><p><strong>生成堆转储文件</strong> 使用Arthas的<code>heapdump</code>命令生成堆的全量内存信息文件(例如:<code>heapdump arthas-output/dump.hprof</code>)。这个操作可能需要根据实际情况多次执行,以便在不同时间点捕获堆的状态,为后续分析提供对比基础。</p></li><li><p><strong>分析堆转储文件</strong> 下载生成的<code>.hprof</code>文件并使用内存分析工具如Eclipse Memory Analyzer, MAT打开这些文件。通过工具分析对象的数量、大小及其引用链寻找内存泄漏的源头。重点关注那些数量异常增多或大小异常大的对象。</p></li><li><p><strong>定位泄漏对象</strong> 在分析过程中特别注意那些在不同时间点的堆转储中数量持续增加的对象。这些对象很可能是内存泄漏的根源。利用MAT等工具提供的泄漏检测功能可以帮助快速定位到问题对象及它们的创建源头。</p></li><li><p><strong>采取行动</strong> 一旦定位到问题对象,就需要回溯代码,理解为什么这些对象没有被正确地垃圾回收,进而修复潜在的内存泄漏问题。这可能涉及到修改代码以优化对象生命周期管理、及时释放不再使用的资源等。</p></li></ol><p>通过上述步骤结合Arthas提供的强大诊断能力与内存分析工具的深度洞察你可以系统地诊断并解决项目中的内存泄漏或异常占用问题。</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>*专家经验Arthas 排查内存泄露的方法</p><p>*<a href="https://github.com/alibaba/arthas/tree/master/site/docs/doc/profiler.md" target="_blank" rel="noopener noreferrer"># profiler<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" 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