Question

我正在尝试将安装了jdk1.7.0_04的jvisualvm连接到本地运行的java进程。当我这样做时，jvisualvm在左下角显示一个进度条，表示它与进程的连接，然后再也没有响应。

我正在尝试连接的java进程仍然很好并且正常工作。

我可以使用jstack获取visualvm的threaddump，显示1个被阻塞的线程。

AWT-EventQueue-0" prio=6 tid=0x04a1a000 nid=0x1110 waiting for monitor entry [0x062af000]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at com.sun.tools.visualvm.core.model.ModelFactory.getModel(ModelFactory.java:76)
        - waiting to lock <0x289584f0> (a com.sun.tools.visualvm.jvmstat.application.JvmstatApplication)
        at com.sun.tools.visualvm.core.datasource.descriptor.DataSourceDescriptorFactory.getDescriptor(DataSourceDescriptorFactory.java:49)

我无法连接到任何java进程，即使只是等待用户输入的微不足道的进程。我对jdk1.6.0_32也有同样的问题。

- 更新我发现这只会影响我从eclipse启动的java进程。可以从调试透视图启动命令eclipse并打开进程属性。从命令提示符启动相同的进程（使用我从eclipse复制的命令）允许从jvisualvm和jconsole连接。

完整的线程转储：

2012-05-10 13:18:47
Full thread dump Java HotSpot(TM) Client VM (23.0-b21 mixed mode, sharing):

"Inactive RequestProcessor thread [Was:TimedSoftReference/org.openide.util.TimedSoftReference]" daemon prio=2 tid=0x00e12800 nid=0xa5c in Object.wait() [0x0587f000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x22d6a578> (a java.lang.Object)
    at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1880)
    - locked <0x22d6a578> (a java.lang.Object)

Locked ownable synchronizers:
    - None

"pool-4-thread-1" prio=6 tid=0x063ddc00 nid=0x1a70 waiting on condition [0x0750f000]
java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x23440068> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)

Locked ownable synchronizers:
    - None

"pool-3-thread-1" prio=6 tid=0x00fe7400 nid=0x16a0 waiting on condition [0x05a7f000]
java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x28a7ccd8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)

Locked ownable synchronizers:
    - None

"Timer-1" daemon prio=2 tid=0x04c63800 nid=0x1f00 in Object.wait() [0x07f1f000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x289e6688> (a java.util.TaskQueue)
    at java.util.TimerThread.mainLoop(Timer.java:552)
    - locked <0x289e6688> (a java.util.TaskQueue)
    at java.util.TimerThread.run(Timer.java:505)

Locked ownable synchronizers:
    - None

"TimerQueue" daemon prio=6 tid=0x04b82c00 nid=0x124 waiting on condition [0x070df000]
java.lang.Thread.State: TIMED_WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x285f8b20> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082)
    at java.util.concurrent.DelayQueue.take(DelayQueue.java:220)
    at javax.swing.TimerQueue.run(TimerQueue.java:171)
    at java.lang.Thread.run(Thread.java:722)

Locked ownable synchronizers:
    - <0x2862c110> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)

"Thread-3" daemon prio=6 tid=0x04b7b400 nid=0x1c18 in Object.wait() [0x06edf000]
java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x28562950> (a java.util.LinkedList)
    at java.lang.Object.wait(Object.java:503)
    at java.util.prefs.AbstractPreferences$EventDispatchThread.run(AbstractPreferences.java:1476)
    - locked <0x28562950> (a java.util.LinkedList)

Locked ownable synchronizers:
    - None

"DataSourceWindowManager Processor" daemon prio=2 tid=0x04b28c00 nid=0x11e0 runnable [0x06cdf000]
java.lang.Thread.State: RUNNABLE
    at sun.tools.attach.WindowsVirtualMachine.connectPipe(Native Method)
    at sun.tools.attach.WindowsVirtualMachine.execute(WindowsVirtualMachine.java:100)
    at sun.tools.attach.HotSpotVirtualMachine.loadAgentLibrary(HotSpotVirtualMachine.java:58)
    at sun.tools.attach.HotSpotVirtualMachine.loadAgentLibrary(HotSpotVirtualMachine.java:79)
    at sun.tools.attach.HotSpotVirtualMachine.loadAgent(HotSpotVirtualMachine.java:103)
    at com.sun.tools.visualvm.jmx.impl.JmxModelImpl$LocalVirtualMachine.loadManagementAgent(JmxModelImpl.java:676)
    - locked <0x23440218> (a com.sun.tools.visualvm.jmx.impl.JmxModelImpl$LocalVirtualMachine)
    at com.sun.tools.visualvm.jmx.impl.JmxModelImpl$LocalVirtualMachine.startManagementAgent(JmxModelImpl.java:633)
    - locked <0x23440218> (a com.sun.tools.visualvm.jmx.impl.JmxModelImpl$LocalVirtualMachine)
    at com.sun.tools.visualvm.jmx.impl.JmxModelImpl$ProxyClient.tryConnect(JmxModelImpl.java:450)
    at com.sun.tools.visualvm.jmx.impl.JmxModelImpl$ProxyClient.connect(JmxModelImpl.java:420)
    at com.sun.tools.visualvm.jmx.impl.JmxModelImpl.connect(JmxModelImpl.java:200)
    at com.sun.tools.visualvm.jmx.impl.JmxModelImpl.<init>(JmxModelImpl.java:170)
    at com.sun.tools.visualvm.jmx.impl.JmxModelProvider.createModelFor(JmxModelProvider.java:45)
    at com.sun.tools.visualvm.jmx.impl.JmxModelProvider.createModelFor(JmxModelProvider.java:22)
    at com.sun.tools.visualvm.core.model.ModelFactory.getModel(ModelFactory.java:91)
    - locked <0x289f8fe0> (a com.sun.tools.visualvm.jvmstat.application.JvmstatApplication)
    at com.sun.tools.visualvm.tools.jmx.JmxModelFactory.getJmxModelFor(JmxModelFactory.java:49)
    at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.resolveThreads(ApplicationThreadsViewProvider.java:63)
    at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.supportsViewFor(ApplicationThreadsViewProvider.java:29)
    at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.supportsViewFor(ApplicationThreadsViewProvider.java:25)
    at com.sun.tools.visualvm.core.ui.DataSourceViewsManager.getViews(DataSourceViewsManager.java:116)
    at com.sun.tools.visualvm.core.ui.DataSourceWindowManager.openWindowAndAddView(DataSourceWindowManager.java:169)
    at com.sun.tools.visualvm.core.ui.DataSourceWindowManager.access$000(DataSourceWindowManager.java:30)
    at com.sun.tools.visualvm.core.ui.DataSourceWindowManager$1.run(DataSourceWindowManager.java:80)
    at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1385)
    at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1929)

Locked ownable synchronizers:
    - None

"AWT-EventQueue-0" prio=6 tid=0x049fa000 nid=0x1b90 waiting on condition [0x062af000]
java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x28310488> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
    at java.awt.EventQueue.getNextEvent(EventQueue.java:511)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:213)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)

Locked ownable synchronizers:
    - None

"AWT-Windows" daemon prio=6 tid=0x049cc000 nid=0x12b0 runnable [0x0608f000]
java.lang.Thread.State: RUNNABLE
    at sun.awt.windows.WToolkit.eventLoop(Native Method)
    at sun.awt.windows.WToolkit.run(WToolkit.java:299)
    at java.lang.Thread.run(Thread.java:722)

Locked ownable synchronizers:
    - None

"AWT-Shutdown" prio=6 tid=0x049cb400 nid=0x1954 in Object.wait() [0x05e8f000]
java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x28430620> (a java.lang.Object)
    at java.lang.Object.wait(Object.java:503)
    at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:287)
    - locked <0x28430620> (a java.lang.Object)
    at java.lang.Thread.run(Thread.java:722)

Locked ownable synchronizers:
    - None

"Java2D Disposer" daemon prio=10 tid=0x010a4000 nid=0x1dd4 in Object.wait() [0x05c8f000]
java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x28378258> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
    - locked <0x28378258> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
    at sun.java2d.Disposer.run(Disposer.java:145)
    at java.lang.Thread.run(Thread.java:722)

Locked ownable synchronizers:
    - None

"CLI Requests Server" daemon prio=6 tid=0x01058000 nid=0x1a58 runnable [0x0567f000]
java.lang.Thread.State: RUNNABLE
    at java.net.TwoStacksPlainSocketImpl.socketAccept(Native Method)
    at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398)
    at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:183)
    - locked <0x28378700> (a java.net.SocksSocketImpl)
    at java.net.ServerSocket.implAccept(ServerSocket.java:522)
    at java.net.ServerSocket.accept(ServerSocket.java:490)
    at org.netbeans.CLIHandler$Server.run(CLIHandler.java:1042)

Locked ownable synchronizers:
    - None

"Active Reference Queue Daemon" daemon prio=2 tid=0x01028c00 nid=0x17b4 in Object.wait() [0x049af000]
java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x28378878> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
    - locked <0x28378878> (a java.lang.ref.ReferenceQueue$Lock)
    at org.openide.util.lookup.implspi.ActiveQueue$Impl.run(ActiveQueue.java:64)
    at java.lang.Thread.run(Thread.java:722)

Locked ownable synchronizers:
    - None

"Timer-0" daemon prio=6 tid=0x01015400 nid=0x1ce8 in Object.wait() [0x047af000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x28378910> (a java.util.TaskQueue)
    at java.util.TimerThread.mainLoop(Timer.java:552)
    - locked <0x28378910> (a java.util.TaskQueue)
    at java.util.TimerThread.run(Timer.java:505)

Locked ownable synchronizers:
    - None

"Service Thread" daemon prio=6 tid=0x00e7b400 nid=0x4a8 runnable [0x00000000]
java.lang.Thread.State: RUNNABLE

Locked ownable synchronizers:
    - None

"C1 CompilerThread0" daemon prio=10 tid=0x00e76000 nid=0x13e0 waiting on condition [0x00000000]
java.lang.Thread.State: RUNNABLE

Locked ownable synchronizers:
    - None

"Attach Listener" daemon prio=10 tid=0x00e74400 nid=0x448 waiting on condition [0x00000000]
java.lang.Thread.State: RUNNABLE

Locked ownable synchronizers:
    - None

"Signal Dispatcher" daemon prio=10 tid=0x00e73000 nid=0x1eb4 runnable [0x00000000]
java.lang.Thread.State: RUNNABLE

Locked ownable synchronizers:
    - None

"Finalizer" daemon prio=8 tid=0x00e60400 nid=0x1f28 in Object.wait() [0x03b1f000]
java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x28378b58> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
    - locked <0x28378b58> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
    at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:177)

Locked ownable synchronizers:
    - None

"Reference Handler" daemon prio=10 tid=0x00e5ec00 nid=0x1d40 in Object.wait() [0x0391f000]
java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x283782e8> (a java.lang.ref.Reference$Lock)
    at java.lang.Object.wait(Object.java:503)
    at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
    - locked <0x283782e8> (a java.lang.ref.Reference$Lock)

Locked ownable synchronizers:
    - None

"main" prio=6 tid=0x00db8000 nid=0x12f0 waiting on condition [0x00000000]
java.lang.Thread.State: RUNNABLE

Locked ownable synchronizers:
    - None

"VM Thread" prio=10 tid=0x00e5d000 nid=0xbf8 runnable 

"VM Periodic Task Thread" prio=10 tid=0x00e7e800 nid=0x1fcc waiting on condition 

JNI global references: 656

Answer 1

请检查您的网络配置。

我遇到了同样的问题。当我使用“No Proxy”设置网络配置时，它可以工作。主菜单：tools/options/network/no proxy。

Answer 2

尝试将以下VM参数添加到“运行配置”：

-Djava.rmi.server.hostname=localhost

Answer 3

在VisualVM邮件列表上找到它：https://java.net/projects/visualvm/lists/users/archive/2016-06/message/7

补充说：

-J-Dorg.netbeans.profiler.separateConsole=true

到我的jvisualvm.exe快捷方式，它可以工作！

Answer 4

我遇到了同样的问题，我在代理服务器后面。选择“无代理”或“手动代理设置”可以解决问题。

这么简单，我浪费了几个小时......

Answer 5

在我的情况下，解决方案是使用32位jsdk。
使用param --trace来诊断启动jvisualvm ..

我的日志包含：
Cannot load C:\Program Files\Java\jdk1.7.0_45\jre\bin\server\jvm.dll. %1 is not a valid Win32 application. (193) Falling back to running Java in a separate process; DLL cannot be loaded (64-bit DLL?).

Answer 6

有时候，Skype会坐在奇怪的端口上......至少有两次，当它选择了8080时，这让我头疼不已，而且我认为我的Tomcat已经损坏了。事实证明（经过一个小时左右的完全无能和毫无防备），Skype正在使用该端口......

还有一个问题：你是否从Eclipse开始以“运行”或“调试”模式运行程序？

Answer 7

在eclipse runConfigurations augments选项卡中添加follwing参数

-XX：+ StartAttachListener

这将允许visualVM立即连接，样本和分析将起作用。

Java VisualVM挂起连接到从eclipse启动的本地进程

7 个答案: