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如何识别Java过程的CPU 100％利用率

2015-11-04 98 views
0

我有一个使用几乎100％CPU的Java程序。我已经尝试了java线程转储，但我无法找到代码的任何问题。谁能帮我找到这个问题如何识别Java过程的CPU 100％利用率

2015-11-03 16:24:45 
Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode): 

"RMI TCP Connection(5)-104.130.180.175" #3298 daemon prio=5 os_prio=0 tid=0x000000001633a800 nid=0xf64 in Object.wait() [0x000000001923c000] 
    java.lang.Thread.State: TIMED_WAITING (on object monitor) 
    at java.lang.Object.wait(Native Method) 
    at com.sun.jmx.remote.internal.ArrayNotificationBuffer.fetchNotifications(ArrayNotificationBuffer.java:449) 
    - locked <0x00000000c0a84b30> (a com.sun.jmx.remote.internal.ArrayNotificationBuffer) 
    at com.sun.jmx.remote.internal.ArrayNotificationBuffer$ShareBuffer.fetchNotifications(ArrayNotificationBuffer.java:227) 
    at com.sun.jmx.remote.internal.ServerNotifForwarder.fetchNotifs(ServerNotifForwarder.java:274) 
    at javax.management.remote.rmi.RMIConnectionImpl$3.run(RMIConnectionImpl.java:1268) 
    at javax.management.remote.rmi.RMIConnectionImpl$3.run(RMIConnectionImpl.java:1266) 
    at javax.management.remote.rmi.RMIConnectionImpl.fetchNotifications(RMIConnectionImpl.java:1272) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:497) 
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323) 
    at sun.rmi.transport.Transport$1.run(Transport.java:200) 
    at sun.rmi.transport.Transport$1.run(Transport.java:197) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at sun.rmi.transport.Transport.serviceCall(Transport.java:196) 
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$254(TCPTransport.java:683) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$2/1991638838.run(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - <0x00000000c0a84ed0> (a java.util.concurrent.ThreadPoolExecutor$Worker) 

"RMI TCP Connection(3)-104.130.180.175" #3296 daemon prio=5 os_prio=0 tid=0x000000001633b800 nid=0xf9c runnable [0x000000001903e000] 
    java.lang.Thread.State: RUNNABLE 
    at java.net.SocketInputStream.socketRead0(Native Method) 
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) 
    at java.net.SocketInputStream.read(SocketInputStream.java:170) 
    at java.net.SocketInputStream.read(SocketInputStream.java:141) 
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:246) 
    at java.io.BufferedInputStream.read(BufferedInputStream.java:265) 
    - locked <0x00000000c0a869d8> (a java.io.BufferedInputStream) 
    at java.io.FilterInputStream.read(FilterInputStream.java:83) 
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:550) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$254(TCPTransport.java:683) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$2/1991638838.run(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - <0x00000000c0a86c28> (a java.util.concurrent.ThreadPoolExecutor$Worker) 

"RMI TCP Connection(2)-104.130.180.175" #3295 daemon prio=5 os_prio=0 tid=0x000000001633d000 nid=0xd38 runnable [0x0000000018f3e000] 
    java.lang.Thread.State: RUNNABLE 
    at java.net.SocketInputStream.socketRead0(Native Method) 
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) 
    at java.net.SocketInputStream.read(SocketInputStream.java:170) 
    at java.net.SocketInputStream.read(SocketInputStream.java:141) 
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:246) 
    at java.io.BufferedInputStream.read(BufferedInputStream.java:265) 
    - locked <0x00000000c0a87130> (a java.io.BufferedInputStream) 
    at java.io.FilterInputStream.read(FilterInputStream.java:83) 
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:550) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$254(TCPTransport.java:683) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$2/1991638838.run(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - <0x00000000c0a87270> (a java.util.concurrent.ThreadPoolExecutor$Worker) 

"JMX server connection timeout 3294" #3294 daemon prio=5 os_prio=0 tid=0x000000001633d800 nid=0xf14 in Object.wait() [0x0000000016f6f000] 
    java.lang.Thread.State: TIMED_WAITING (on object monitor) 
    at java.lang.Object.wait(Native Method) 
    at com.sun.jmx.remote.internal.ServerCommunicatorAdmin$Timeout.run(ServerCommunicatorAdmin.java:168) 
    - locked <0x00000000c0a8fe08> (a [I) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - None 

"RMI Scheduler(0)" #3293 daemon prio=5 os_prio=0 tid=0x0000000016339000 nid=0x7dc waiting on condition [0x0000000016d6f000] 
    java.lang.Thread.State: TIMED_WAITING (parking) 
    at sun.misc.Unsafe.park(Native Method) 
    - parking to wait for <0x00000000c0a90128> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) 
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215) 
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078) 
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093) 
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809) 
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - None 

"RMI TCP Accept-0" #3289 daemon prio=5 os_prio=0 tid=0x00000000163c1000 nid=0xd5c runnable [0x000000001696e000] 
    java.lang.Thread.State: RUNNABLE 
    at java.net.DualStackPlainSocketImpl.accept0(Native Method) 
    at java.net.DualStackPlainSocketImpl.socketAccept(DualStackPlainSocketImpl.java:131) 
    at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:404) 
    at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:199) 
    - locked <0x00000000c0a9aa68> (a java.net.SocksSocketImpl) 
    at java.net.ServerSocket.implAccept(ServerSocket.java:545) 
    at java.net.ServerSocket.accept(ServerSocket.java:513) 
    at sun.management.jmxremote.LocalRMIServerSocketFactory$1.accept(LocalRMIServerSocketFactory.java:52) 
    at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:400) 
    at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:372) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - None 

"MySQL Statement Cancellation Timer" #36 daemon prio=5 os_prio=0 tid=0x00000000163bd000 nid=0xc08 in Object.wait() [0x0000000015a8f000] 
    java.lang.Thread.State: WAITING (on object monitor) 
    at java.lang.Object.wait(Native Method) 
    - waiting on <0x00000000c069e780> (a java.util.TaskQueue) 
    at java.lang.Object.wait(Object.java:502) 
    at java.util.TimerThread.mainLoop(Timer.java:526) 
    - locked <0x00000000c069e780> (a java.util.TaskQueue) 
    at java.util.TimerThread.run(Timer.java:505) 

    Locked ownable synchronizers: 
    - None 

"Thread-14" #35 prio=5 os_prio=0 tid=0x00000000163bf800 nid=0x7b8 runnable [0x000000001746f000] 
    java.lang.Thread.State: RUNNABLE 
    at java.net.DualStackPlainSocketImpl.accept0(Native Method) 
    at java.net.DualStackPlainSocketImpl.socketAccept(DualStackPlainSocketImpl.java:131) 
    at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:404) 
    at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:199) 
    - locked <0x00000000c069eae8> (a java.net.SocksSocketImpl) 
    at java.net.ServerSocket.implAccept(ServerSocket.java:545) 
    at java.net.ServerSocket.accept(ServerSocket.java:513) 
    at com.teleai.smsg.gateway.SocketServer.run(SocketServer.java:20) 

    Locked ownable synchronizers: 
    - None 

"Monitor Thread" #34 prio=5 os_prio=0 tid=0x00000000163bf000 nid=0x43c waiting on condition [0x000000001736f000] 
    java.lang.Thread.State: TIMED_WAITING (sleeping) 
    at java.lang.Thread.sleep(Native Method) 
    at com.teleai.smsg.gateway.Monitor.run(Monitor.java:24) 

    Locked ownable synchronizers: 
    - None 

"Timer-0" #33 daemon prio=5 os_prio=0 tid=0x00000000163bb000 nid=0x6e0 in Object.wait() [0x000000001716f000] 
    java.lang.Thread.State: TIMED_WAITING (on object monitor) 
    at java.lang.Object.wait(Native Method) 
    at java.util.TimerThread.mainLoop(Timer.java:552) 
    - locked <0x00000000c069f678> (a java.util.TaskQueue) 
    at java.util.TimerThread.run(Timer.java:505) 

    Locked ownable synchronizers: 
    - None 

"QueueProcessor Thread Telco: 236" #32 prio=5 os_prio=0 tid=0x00000000163bb800 nid=0xdb8 runnable [0x000000001706e000] 
    java.lang.Thread.State: RUNNABLE 
    at com.teleai.smsg.gateway.QueueProcessor.run(QueueProcessor.java:92) 
    - locked <0x00000000c069fa50> (a com.teleai.smsg.gateway.QueueProcessor) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - None 

"QueueProcessor Thread Telco: 162" #28 prio=5 os_prio=0 tid=0x00000000163ba000 nid=0xe98 runnable [0x0000000016e6f000] 
    java.lang.Thread.State: RUNNABLE 
    at com.teleai.smsg.gateway.QueueProcessor.run(QueueProcessor.java:92) 
    - locked <0x00000000c06a6440> (a com.teleai.smsg.gateway.QueueProcessor) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - None 

"QueueProcessor Thread Telco: 158" #24 prio=5 os_prio=0 tid=0x00000000163e1000 nid=0x93c runnable [0x0000000016c6f000] 
    java.lang.Thread.State: RUNNABLE 
    at com.teleai.smsg.gateway.QueueProcessor.run(QueueProcessor.java:92) 
    - locked <0x00000000c06a7050> (a com.teleai.smsg.gateway.QueueProcessor) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - None 

"QueueProcessor Thread Telco: 4" #20 prio=5 os_prio=0 tid=0x0000000016519800 nid=0xc7c runnable [0x0000000016a6e000] 
    java.lang.Thread.State: RUNNABLE 
    at com.teleai.smsg.gateway.QueueProcessor.run(QueueProcessor.java:92) 
    - locked <0x00000000c06c1f80> (a com.teleai.smsg.gateway.QueueProcessor) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - None 

"DestroyJavaVM" #14 prio=5 os_prio=0 tid=0x0000000001180800 nid=0xe6c waiting on condition [0x0000000000000000] 
    java.lang.Thread.State: RUNNABLE 

    Locked ownable synchronizers: 
    - None 

"Wrapper-Connection" #13 daemon prio=10 os_prio=2 tid=0x00000000154c3800 nid=0xa48 runnable [0x0000000015b8f000] 
    java.lang.Thread.State: RUNNABLE 
    at java.net.SocketInputStream.socketRead0(Native Method) 
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) 
    at java.net.SocketInputStream.read(SocketInputStream.java:170) 
    at java.net.SocketInputStream.read(SocketInputStream.java:141) 
    at java.net.SocketInputStream.read(SocketInputStream.java:223) 
    at java.io.DataInputStream.readByte(DataInputStream.java:265) 
    at org.tanukisoftware.wrapper.WrapperManager.handleSocket(WrapperManager.java:3737) 
    at org.tanukisoftware.wrapper.WrapperManager.run(WrapperManager.java:4084) 
    at java.lang.Thread.run(Thread.java:745) 

    Locked ownable synchronizers: 
    - None 

"Wrapper-Control-Event-Monitor" #11 daemon prio=5 os_prio=0 tid=0x000000001541b800 nid=0xfbc waiting on condition [0x000000001598e000] 
    java.lang.Thread.State: TIMED_WAITING (sleeping) 
    at java.lang.Thread.sleep(Native Method) 
    at org.tanukisoftware.wrapper.WrapperManager$3.run(WrapperManager.java:731) 

    Locked ownable synchronizers: 
    - None 

"Service Thread" #9 daemon prio=9 os_prio=0 tid=0x00000000151c0800 nid=0x6b8 runnable [0x0000000000000000] 
    java.lang.Thread.State: RUNNABLE 

    Locked ownable synchronizers: 
    - None 

"C1 CompilerThread2" #8 daemon prio=9 os_prio=2 tid=0x0000000013952000 nid=0xb10 waiting on condition [0x0000000000000000] 
    java.lang.Thread.State: RUNNABLE 

    Locked ownable synchronizers: 
    - None 

"C2 CompilerThread1" #7 daemon prio=9 os_prio=2 tid=0x000000001394e000 nid=0xd0 waiting on condition [0x0000000000000000] 
    java.lang.Thread.State: RUNNABLE 

    Locked ownable synchronizers: 
    - None 

"C2 CompilerThread0" #6 daemon prio=9 os_prio=2 tid=0x000000001395b000 nid=0x6b4 waiting on condition [0x0000000000000000] 
    java.lang.Thread.State: RUNNABLE 

    Locked ownable synchronizers: 
    - None 

"Attach Listener" #5 daemon prio=5 os_prio=2 tid=0x0000000013959000 nid=0x74 waiting on condition [0x0000000000000000] 
    java.lang.Thread.State: RUNNABLE 

    Locked ownable synchronizers: 
    - None 

"Signal Dispatcher" #4 daemon prio=9 os_prio=2 tid=0x0000000013957800 nid=0x478 runnable [0x0000000000000000] 
    java.lang.Thread.State: RUNNABLE 

    Locked ownable synchronizers: 
    - None 

"Finalizer" #3 daemon prio=8 os_prio=1 tid=0x0000000001277000 nid=0x7a8 in Object.wait() [0x0000000014c9e000] 
    java.lang.Thread.State: WAITING (on object monitor) 
    at java.lang.Object.wait(Native Method) 
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) 
    - locked <0x00000000c07b0768> (a java.lang.ref.ReferenceQueue$Lock) 
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164) 
    at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209) 

    Locked ownable synchronizers: 
    - None 

"Reference Handler" #2 daemon prio=10 os_prio=2 tid=0x000000000126e800 nid=0x8e4 in Object.wait() [0x0000000014b9f000] 
    java.lang.Thread.State: WAITING (on object monitor) 
    at java.lang.Object.wait(Native Method) 
    at java.lang.Object.wait(Object.java:502) 
    at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157) 
    - locked <0x00000000c078db68> (a java.lang.ref.Reference$Lock) 

    Locked ownable synchronizers: 
    - None 

"VM Thread" os_prio=2 tid=0x0000000013917800 nid=0x958 runnable 

"GC task thread#0 (ParallelGC)" os_prio=0 tid=0x0000000001196800 nid=0xc3c runnable 

"GC task thread#1 (ParallelGC)" os_prio=0 tid=0x0000000001198000 nid=0xa80 runnable 

"GC task thread#2 (ParallelGC)" os_prio=0 tid=0x0000000001199800 nid=0x474 runnable 

"GC task thread#3 (ParallelGC)" os_prio=0 tid=0x000000000119b800 nid=0x8c8 runnable 

"VM Periodic Task Thread" os_prio=2 tid=0x00000000139ae800 nid=0xb7c waiting on condition 

JNI global references: 255

我也有使用进程管理器来识别线程，下面是一个快照 enter image description here

我用视觉VM并得到如下结果 enter image description here

以下是围绕线程的情况enter image description here

我对于遵循的方向仍然无能为力，任何人都可以指出我正确的方向。

我试过的更多的事情是通过在从进程管理器获取线程ID后将其转换为hexa来识别线程转储内的线程ID。这样我就能够识别代码中的确切行号。

来源

2015-11-04 hellowahab

+1

我建议你使用详细的分析器。检查VisualVM https://visualvm.java.net/ –

+0

使用visualvm时，请确保查看堆空间使用情况 - 您可能内存不足，并且GC继续运行并使用CPU。 –

+0

堆空间使用量为43MB，而1GB可用。没有任何内存不足 – hellowahab

回答

1

CPU使用率截图中的准确行号显示使用CPU的4个线程，线程转储在com.teleai.smsg.gateway.QueueProcessor.run(QueueProcessor.java:92)显示4个线程。不仅仅是巧合，我敢肯定它是罪魁祸首。

来源

2015-11-04 10:36:39

0

我已经使用进程探索来识别上述进程管理器中提到的线程ID，并将它们转换为十六进制，如下所示。 3196 C7C 3736 E98 3512 DB8 2364 93C

这可以帮助我找到转储即QueueProcessor.java:92）

来源

2015-11-04 10:36:11 hellowahab

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