<!DOCTYPE html>
<!--[if IE 8]><html class="no-js lt-ie9" lang="zh-CN" > <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js" lang="zh-CN" > <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>快速入门 — Arthas 3.0.6-SNAPSHOT 文档</title>
<link rel="shortcut icon" href="_static/favicon.ico"/>
<link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
<link rel="stylesheet" href="_static/pygments.css" type="text/css" />
<link rel="stylesheet" href="_static/overrides.css" type="text/css" />
<link rel="index" title="索引" href="genindex.html" />
<link rel="search" title="搜索" href="search.html" />
<link rel="next" title="进阶使用" href="advanced-use.html" />
<link rel="prev" title="Arthas Install" href="install-detail.html" />
<script src="_static/center_page.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/styles/github.min.css">
<script src="_static/js/modernizr.min.js"></script>
</head>
<body class="wy-body-for-nav">
<div class="wy-grid-for-nav">
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
<div class="wy-side-scroll">
<div class="wy-side-nav-search">
<a href="index.html" class="icon icon-home"> Arthas
</a>
<div class="version">
3.0.6-SNAPSHOT
</div>
<div role="search">
<form id="rtd-search-form" class="wy-form" action="search.html" method="get">
<input type="text" name="q" placeholder="Search docs" />
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>
</div>
</div>
<div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
<ul class="current">
<li class="toctree-l1"><a class="reference external" href="https://alibaba.github.io/arthas/en/">English Docs</a></li>
<li class="toctree-l1"><a class="reference internal" href="install-detail.html">安装</a></li>
<li class="toctree-l1 current"><a class="current reference internal" href="#">快速入门</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#demo">1. 启动Demo</a></li>
<li class="toctree-l2"><a class="reference internal" href="#arthas">2. 启动arthas</a></li>
<li class="toctree-l2"><a class="reference internal" href="#dashboard">3. 查看dashboard</a></li>
<li class="toctree-l2"><a class="reference internal" href="#threadarthas-demomain-class">4. 通过thread命令来获取到<tt class="docutils literal">arthas-demo</tt>进程的Main Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="#jadmain-class">5. 通过jad来反编绎Main Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="#watch">6. watch</a></li>
<li class="toctree-l2"><a class="reference internal" href="#arthas">5. 退出arthas</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="advanced-use.html">进阶使用</a></li>
<li class="toctree-l1"><a class="reference internal" href="commands.html">命令列表</a></li>
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case">用户案例</a></li>
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Aquestion-answered">常见问题</a></li>
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas">Fork me at GitHub</a></li>
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md">参与贡献</a></li>
<li class="toctree-l1"><a class="reference internal" href="release-notes.html">Release Notes</a></li>
<li class="toctree-l1"><a class="reference internal" href="contact-us.html">QQ群/钉钉群</a></li>
</ul>
</div>
</div>
</nav>
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
<nav class="wy-nav-top" aria-label="top navigation">
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
<a href="index.html">Arthas</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">Docs</a> »</li>
<li>快速入门</li>
<li class="wy-breadcrumbs-aside">
<a href="https://github.com/alibaba/arthas/blob/master/site/src/site/sphinx/quick-start.md" class="fa fa-github"> Edit on GitHub</a>
</li>
</ul>
<hr/>
</div>
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
<div itemprop="articleBody">
<div class="section" id="">
<span id="id1"></span><h1>快速入门<a class="headerlink" href="#" title="永久链接至标题">¶</a></h1>
<div class="section" id="demo">
<span id="demo"></span><h2>1. 启动Demo<a class="headerlink" href="#demo" title="永久链接至标题">¶</a></h2>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ wget https://alibaba.github.io/arthas/arthas-demo.jar
$ java -jar arthas-demo.jar
</pre></div>
</div>
<p><tt class="docutils literal">arthas-demo</tt>是一个简单的程序，每隔一秒生成一个随机数，再执行质因式分解，并打印出分解结果。</p>
<p><tt class="docutils literal">arthas-demo</tt>源代码：<a class="reference external" href="https://github.com/alibaba/arthas/blob/master/demo/src/main/java/demo/MathGame.java">查看</a></p>
</div>
<div class="section" id="arthas">
<span id="arthas"></span><h2>2. 启动arthas<a class="headerlink" href="#arthas" title="永久链接至标题">¶</a></h2>
<p>在命令行下面执行：</p>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ wget https://alibaba.github.io/arthas/arthas-boot.jar
$ java -jar arthas-boot.jar
</pre></div>
</div>
<ul class="simple">
<li>执行该程序的用户需要和目标进程具有相同的权限。比如以<tt class="docutils literal">admin</tt>用户来执行：<tt class="docutils literal">sudo su admin && java -jar arthas-boot.jar</tt> 或 <tt class="docutils literal">sudo -u admin -EH java -jar arthas-boot.jar</tt>。</li>
<li>如果attatch不上目标进程，可以查看<tt class="docutils literal">~/logs/arthas/</tt> 目录下的日志。</li>
<li>如果下载速度比较慢，可以使用aliyun的镜像：<tt class="docutils literal">java -jar arthas-boot.jar --repo-mirror aliyun --use-http</tt></li>
<li><tt class="docutils literal">java -jar arthas-boot.jar -h</tt> 打印更多参数信息。</li>
</ul>
<p>选择应用java进程：</p>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ $ java -jar arthas-boot.jar
* [1]: 35542
[2]: 71560 arthas-demo.jar
</pre></div>
</div>
<p>Demo进程是第2个，则输入2，再输入回车/enter。Arthas会attach到目标进程上，并输出日志：</p>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">[INFO] Try to attach process 71560
[INFO] Attach process 71560 success.
[INFO] arthas-client connect 127.0.0.1 3658
,---. ,------. ,--------.,--. ,--. ,---. ,---.
/ O \ | .--. ''--. .--'| '--' | / O \ ' .-'
| .-. || '--'.' | | | .--. || .-. |`. `-.
| | | || |\ \ | | | | | || | | |.-' |
`--' `--'`--' '--' `--' `--' `--'`--' `--'`-----'
wiki: https://alibaba.github.io/arthas
version: 3.0.5.20181127201536
pid: 71560
time: 2018-11-28 19:16:24
$
</pre></div>
</div>
</div>
<div class="section" id="dashboard">
<span id="dashboard"></span><h2>3. 查看dashboard<a class="headerlink" href="#dashboard" title="永久链接至标题">¶</a></h2>
<p>输入<a class="reference internal" href="dashboard.html"><span class="doc">dashboard</span></a>，按enter/回车，会展示当前进程的信息，按<tt class="docutils literal">ctrl+c</tt>可以中断执行。</p>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ dashboard
ID NAME GROUP PRIORI STATE %CPU TIME INTERRU DAEMON
17 pool-2-thread-1 system 5 WAITIN 67 0:0 false false
27 Timer-for-arthas-dashb system 10 RUNNAB 32 0:0 false true
11 AsyncAppender-Worker-a system 9 WAITIN 0 0:0 false true
9 Attach Listener system 9 RUNNAB 0 0:0 false true
3 Finalizer system 8 WAITIN 0 0:0 false true
2 Reference Handler system 10 WAITIN 0 0:0 false true
4 Signal Dispatcher system 9 RUNNAB 0 0:0 false true
26 as-command-execute-dae system 10 TIMED_ 0 0:0 false true
13 job-timeout system 9 TIMED_ 0 0:0 false true
1 main main 5 TIMED_ 0 0:0 false false
14 nioEventLoopGroup-2-1 system 10 RUNNAB 0 0:0 false false
18 nioEventLoopGroup-2-2 system 10 RUNNAB 0 0:0 false false
23 nioEventLoopGroup-2-3 system 10 RUNNAB 0 0:0 false false
15 nioEventLoopGroup-3-1 system 10 RUNNAB 0 0:0 false false
Memory used total max usage GC
heap 32M 155M 1820M 1.77% gc.ps_scavenge.count 4
ps_eden_space 14M 65M 672M 2.21% gc.ps_scavenge.time(m 166
ps_survivor_space 4M 5M 5M s)
ps_old_gen 12M 85M 1365M 0.91% gc.ps_marksweep.count 0
nonheap 20M 23M -1 gc.ps_marksweep.time( 0
code_cache 3M 5M 240M 1.32% ms)
Runtime
os.name Mac OS X
os.version 10.13.4
java.version 1.8.0_162
java.home /Library/Java/JavaVir
tualMachines/jdk1.8.0
_162.jdk/Contents/Hom
e/jre
</pre></div>
</div>
</div>
<div class="section" id="threadarthas-demomain-class">
<span id="threadarthas-demomain-class"></span><h2>4. 通过thread命令来获取到<tt class="docutils literal">arthas-demo</tt>进程的Main Class<a class="headerlink" href="#threadarthas-demomain-class" title="永久链接至标题">¶</a></h2>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ thread -n -1 | grep 'main('
at demo.MathGame.main(MathGame.java:17)
</pre></div>
</div>
</div>
<div class="section" id="jadmain-class">
<span id="jadmain-class"></span><h2>5. 通过jad来反编绎Main Class<a class="headerlink" href="#jadmain-class" title="永久链接至标题">¶</a></h2>
<div class="highlight-java notranslate"><div class="highlight hljs"><pre class="java">$ jad demo.MathGame
ClassLoader:
+-sun.misc.Launcher$AppClassLoader@3d4eac69
+-sun.misc.Launcher$ExtClassLoader@66350f69
Location:
/tmp/arthas-demo.jar
/*
* Decompiled with CFR 0_132.
*/
package demo;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import java.util.concurrent.TimeUnit;
public class MathGame {
private static Random random = new Random();
private int illegalArgumentCount = 0;
public static void main(String[] args) throws InterruptedException {
MathGame game = new MathGame();
do {
game.run();
TimeUnit.SECONDS.sleep(1L);
} while (true);
}
public void run() throws InterruptedException {
try {
int number = random.nextInt();
List<Integer> primeFactors = this.primeFactors(number);
MathGame.print(number, primeFactors);
}
catch (Exception e) {
System.out.println(String.format("illegalArgumentCount:%3d, ", this.illegalArgumentCount) + e.getMessage());
}
}
public static void print(int number, List<Integer> primeFactors) {
StringBuffer sb = new StringBuffer("" + number + "=");
Iterator<Integer> iterator = primeFactors.iterator();
while (iterator.hasNext()) {
int factor = iterator.next();
sb.append(factor).append('*');
}
if (sb.charAt(sb.length() - 1) == '*') {
sb.deleteCharAt(sb.length() - 1);
}
System.out.println(sb);
}
public List<Integer> primeFactors(int number) {
if (number < 2) {
++this.illegalArgumentCount;
throw new IllegalArgumentException("number is: " + number + ", need >= 2");
}
ArrayList<Integer> result = new ArrayList<Integer>();
int i = 2;
while (i <= number) {
if (number % i == 0) {
result.add(i);
number /= i;
i = 2;
continue;
}
++i;
}
return result;
}
}
Affect(row-cnt:1) cost in 970 ms.
</pre></div>
</div>
</div>
<div class="section" id="watch">
<span id="watch"></span><h2>6. watch<a class="headerlink" href="#watch" title="永久链接至标题">¶</a></h2>
<p>通过<a class="reference internal" href="watch.html"><span class="doc">watch</span></a>命令来查看<tt class="docutils literal">demo.MathGame#primeFactors</tt>函数的返回值：</p>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ watch demo.MathGame primeFactors returnObj
Press Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 107 ms.
ts=2018-11-28 19:22:30; [cost=1.715367ms] result=null
ts=2018-11-28 19:22:31; [cost=0.185203ms] result=null
ts=2018-11-28 19:22:32; [cost=19.012416ms] result=@ArrayList[
@Integer[5],
@Integer[47],
@Integer[2675531],
]
ts=2018-11-28 19:22:33; [cost=0.311395ms] result=@ArrayList[
@Integer[2],
@Integer[5],
@Integer[317],
@Integer[503],
@Integer[887],
]
ts=2018-11-28 19:22:34; [cost=10.136007ms] result=@ArrayList[
@Integer[2],
@Integer[2],
@Integer[3],
@Integer[3],
@Integer[31],
@Integer[717593],
]
ts=2018-11-28 19:22:35; [cost=29.969732ms] result=@ArrayList[
@Integer[5],
@Integer[29],
@Integer[7651739],
]
</pre></div>
</div>
<p>更多的功能可以查看<a class="reference internal" href="advanced-use.html"><span class="doc">进阶使用</span></a>。</p>
</div>
<div class="section" id="arthas">
<span id="id2"></span><h2>5. 退出arthas<a class="headerlink" href="#arthas" title="永久链接至标题">¶</a></h2>
<p>如果只是退出当前的连接，可以用<tt class="docutils literal">quit</tt>或者<tt class="docutils literal">exit</tt>命令。Attach到目标进程上的arthas还会继续运行，端口会保持开放，下次连接时可以直接连接上。</p>
<p>如果想完全退出arthas，可以执行<tt class="docutils literal">shutdown</tt>命令。</p>
</div>
</div>
</div>
</div>
<footer>
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
<a href="advanced-use.html" class="btn btn-neutral float-right" title="进阶使用" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
<a href="install-detail.html" class="btn btn-neutral" title="Arthas Install" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
</div>
<hr/>
<div role="contentinfo">
<p>
© Copyright 2018, Alibaba Middleware Group, and contributors.
</p>
</div>
Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
</footer>
</div>
</div>
</section>
</div>
<script type="text/javascript">
var DOCUMENTATION_OPTIONS = {
URL_ROOT:'./',
VERSION:'3.0.6-SNAPSHOT',
LANGUAGE:'zh_CN',
COLLAPSE_INDEX:false,
FILE_SUFFIX:'.html',
HAS_SOURCE: true,
SOURCELINK_SUFFIX: '.txt'
};
</script>
<script type="text/javascript" src="_static/jquery.js"></script>
<script type="text/javascript" src="_static/underscore.js"></script>
<script type="text/javascript" src="_static/doctools.js"></script>
<script type="text/javascript" src="_static/translations.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
<script type="text/javascript" src="_static/js/theme.js"></script>
<script type="text/javascript">
jQuery(function () {
SphinxRtdTheme.Navigation.enable(true);
});
</script>
<div class="github-fork-ribbon-wrapper right">
<div class="github-fork-ribbon">
<a href="https://github.com/alibaba/arthas">Fork me at GitHub</a>
</div>
</div>
<script type="text/javascript" src="_static/add_badges.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/highlight.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlightjs-line-numbers.js/2.5.0/highlightjs-line-numbers.min.js"></script>
<script>
document.querySelectorAll('div.hljs > pre').forEach(function(block) {
hljs.highlightBlock(block);
hljs.lineNumbersBlock(block);
});
</script>
<script>
var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?d5c5e25b100f0eb51a4c35c8a86ea9b4";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
</script>
</body>
</html>