Arthas mbean（查看 Mbean 的信息）
- 2025-05-14 黑龙江
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二、命令列表
2.1 jvm 相关命令
2.1.10 mbean（查看 Mbean 的信息）
使用场景：
mbean命令是arthas提供的一个重要命令，它可以用来查看和操作 Java MBeans（管理 Beans）。MBeans 是 Java Management Extensions (JMX) 的一部分，允许你监控和管理 Java 应用程序的运行时行为。
参数说明：
举例 1：列出所有 Mbean 的名称：
基本用法：mbean
[arthas@11200]$ mbeanjava.lang:type=MemoryPool,name=Metaspacejava.lang:type=MemoryPool,name=PS Old Genjava.lang:type=GarbageCollector,name=PS Scavengejava.lang:type=MemoryPool,name=PS Eden SpaceJMImplementation:type=MBeanServerDelegatejava.lang:type=Runtimejava.lang:type=Threading
举例 2：查看 Mbean 的元信息：
基本用法：mbean -m java.lang:type=Threading
[arthas@11200]$ mbean -m java.lang:type=Threading NAME VALUE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- MBeanInfo Info: ObjectName java.lang:type=Threading ClassName sun.management.ThreadImpl Description Information on the management interface of the MBean Info Descriptor: immutableInfo true interfaceClassName com.sun.management.ThreadMXBean mxbean true MBeanAttributeInfo Attribute: Name ThreadAllocatedMemoryEnabled Description ThreadAllocatedMemoryEnabled Readable true Writable true Is true Type boolean Attribute Descriptor: openType javax.management.openmbean.SimpleType(name=java.lang.Boolean) originalType boolean MBeanAttributeInfo Attribute: Name ThreadAllocatedMemorySupported Description ThreadAllocatedMemorySupported Readable true Writable false Is true Type boolean
举例 3：查看 mbean 属性信息：
基本用法：mbean java.lang:type=Threading
[arthas@11200]$ mbean java.lang:type=Threading OBJECT_NAME java.lang:type=Threading ---------------------------------------------------------------------------------------------------------------- NAME VALUE ---------------------------------------------------------------------------------------------------------------- ThreadAllocatedMemoryEnabled true ThreadAllocatedMemorySupported true AllThreadIds [36, 30, 29, 27, 26, 25, 24, 23, 22, 20, 19, 18, 17, 16, 15, 14, 4, 3, 2] ThreadContentionMonitoringEnabled false CurrentThreadCpuTime 625145 CurrentThreadUserTime 0 ThreadCpuTimeSupported true ThreadCpuTimeEnabled true ThreadCount 19 TotalStartedThreadCount 28 ThreadContentionMonitoringSupported true CurrentThreadCpuTimeSupported true ObjectMonitorUsageSupported true SynchronizerUsageSupported true PeakThreadCount 19 DaemonThreadCount 15 ObjectName java.lang:type=Threading
[arthas@11200]$
举例 4：mbean 的 name 支持通配符匹配：
基本用法：mbean java.lang:type=Th*
[arthas@11200]$ mbean java.lang:type=Th* OBJECT_NAME java.lang:type=Threading ---------------------------------------------------------------------------------------------------------------- NAME VALUE ---------------------------------------------------------------------------------------------------------------- ThreadAllocatedMemoryEnabled true ThreadAllocatedMemorySupported true AllThreadIds [37, 30, 29, 27, 26, 25, 24, 23, 22, 20, 19, 18, 17, 16, 15, 14, 4, 3, 2] ThreadContentionMonitoringEnabled false CurrentThreadCpuTime 1092010 CurrentThreadUserTime 0 ThreadCpuTimeSupported true ThreadCpuTimeEnabled true ThreadCount 19 TotalStartedThreadCount 29 ThreadContentionMonitoringSupported true CurrentThreadCpuTimeSupported true ObjectMonitorUsageSupported true SynchronizerUsageSupported true PeakThreadCount 19 DaemonThreadCount 15 ObjectName java.lang:type=Threading
[arthas@11200]$
注意
ObjectName 的匹配规则与正常的通配符存在差异，详细参见：javax.management.ObjectName
举例 5：通配符匹配特定的属性字段：
基本用法：mbean java.lang:type=Threading *Count
[arthas@11200]$ mbean java.lang:type=Threading *Count OBJECT_NAME java.lang:type=Threading --------------------------------------------------- NAME VALUE --------------------------------------------------- ThreadCount 19 TotalStartedThreadCount 30 PeakThreadCount 19 DaemonThreadCount 15
[arthas@11200]$
举例 6：使用-E命令切换为正则匹配：
基本用法：mbean -E java.lang:type=Threading PeakThreadCount|ThreadCount|DaemonThreadCount
[arthas@11200]$ mbean -E java.lang:type=Threading PeakThreadCount|ThreadCount|DaemonThreadCount OBJECT_NAME java.lang:type=Threading --------------------------------------------- NAME VALUE --------------------------------------------- ThreadCount 19 PeakThreadCount 19 DaemonThreadCount 15
[arthas@11200]$
举例 7：使用-i命令实时监控：
基本用法：mbean -i 1000 java.lang:type=Threading *Count
[arthas@11200]$ mbean -i 1000 java.lang:type=Threading *Count OBJECT_NAME java.lang:type=Threading --------------------------------------------------- NAME VALUE --------------------------------------------------- ThreadCount 19 TotalStartedThreadCount 32 PeakThreadCount 19 DaemonThreadCount 15
OBJECT_NAME java.lang:type=Threading --------------------------------------------------- NAME VALUE --------------------------------------------------- ThreadCount 19 TotalStartedThreadCount 32 PeakThreadCount 19 DaemonThreadCount 15
OBJECT_NAME java.lang:type=Threading --------------------------------------------------- NAME VALUE --------------------------------------------------- ThreadCount 19 TotalStartedThreadCount 32 PeakThreadCount 19 DaemonThreadCount 15
OBJECT_NAME java.lang:type=Threading
本人其他相关文章链接
1.Arthas 全攻略：让调试变得简单2.Arthas dashboard（当前系统的实时数据面板）3.Arthas thread（查看当前JVM的线程堆栈信息）4.Arthas jvm（查看当前JVM的信息）5.Arthas sysprop（查看和修改JVM的系统属性）6.Arthas sysenv（查看JVM的环境变量）7.Arthas vmoption（查看和修改 JVM里诊断相关的option）8.Arthas getstatic（查看类的静态属性 ）9.Arthas heapdump（dump java heap, 类似 jmap 命令的 heap dump 功能）10.Arthas logger（查看 logger 信息，更新 logger level）11.Arthas mbean（查看 Mbean 的信息）12.Arthas memory（查看 JVM 内存信息）13.Arthas ognl（执行ognl表达式）14.Arthas perfcounter（查看当前 JVM 的 Perf Counter 信息）15.Arthas vmtool（从 jvm 里查询对象，执行 forceGc）16.Arthas jad（字节码文件反编译成源代码 ）17.Arthas mc（Memory Compiler/内存编译器 ）18.Arthas redefine（加载外部的.class文件，redefine到JVM里 ）19.Arthas classloader （查看 classloader 的继承树，urls，类加载信息）20.Arthas sc（查看JVM已加载的类信息 ）21.Arthas sm（查看已加载类的方法信息 ）22.Arthas monitor（方法执行监控）23.Arthas stack （输出当前方法被调用的调用路径）24.Arthas trace （方法内部调用路径，并输出方法路径上的每个节点上耗时）25.Arthas tt（方法执行数据的时空隧道，记录下指定方法每次调用的入参和返回信息，并能对这些不同的时间下调用进行观测）26.Arthas watch （方法执行数据观测）27.Arthas profiler（使用async-profiler对应用采样，生成火焰图）
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