如何解释Java线程堆栈？ [英] How to interpret a Java thread stack?
本文介绍了如何解释Java线程堆栈？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
根据这个问题：如何获取堆栈跟踪线程
我想知道是否有人可以指出解释使用 jstack 提取的Java线程堆栈的信息
我的情况是，我有一个在GlassFish v2.1.1上运行的Java EE 5应用程序，定期挂起（每天至少2-3次）。让它再次运行我必须杀死Glassfish进程并再次启动域。应用程序通常会慢慢响应，直到它完全挂起来。一旦挂起，我不能得到一个线程堆栈。我已经能够得到一个线程堆栈，因为它变得越来越慢，但我看不到找到问题或挂起的线程。
这里是最新的线程转储： http://issues.i2m.dk/attachments/66/ threadstack.201103211046.txt
线程转储的代码段：
p：thread-pool-1; w：20daemon prio = 10 tid = 0x00007efd18843800在Object.wait（）中的nid = 0x5f89 $ 0x00007efd03381000
java.lang.Thread.State：TIMED_WAITING对象监视器）
在java.lang.Object.wait（本地方法）
- 等待< 0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork（WorkQueueImpl.java:171）
锁定<0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl $ WorkerThread.run（ThreadPoolImpl.java:528）
TP-Processor83守护进程prio = 10 tid = 0x0000000043179000 nid = 0x5f87 runnable [0x00007efd03583000]
java.lang.Thread.State：RUNNABLE
at java.net.SocketInputStream。 socketRead0（Native Method）
在java.net.SocketInputStream.read（SocketInputStream.java:129）
在java.io.BufferedInputStream.fill（BufferedInputStream.java:218）
在java。 io.BufferedInputStream.read1（BufferedInputStream.java:258）
在java.io.BufferedInputStream.read（BufferedInputStream.java:317）
- 锁定< 0x00007efe72696090> （java.io.BufferedInputStream）
在org.apache.jk.common.ChannelSocket.read（ChannelSocket.java:607）
在org.apache.jk.common.ChannelSocket.receive（ChannelSocket。 java：545）
在org.apache.jk.common.ChannelSocket.processConnection（ChannelSocket.java:672）
在org.apache.jk.common.ChannelSocket $ SocketConnection.runIt（ChannelSocket.java： 876）
在org.apache.tomcat.util.threads.ThreadPool $ ControlRunnable.run（ThreadPool.java:684）
在java.lang.Thread.run（Thread.java:662）
p：thread-pool-1; w：19daemon prio = 10 tid = 0x00007efd18710800在Object.wait（）中为nid = 0x5f86 $ 0x00007efd03684000
java.lang.Thread.State： TIMED_WAITING（在对象监视器上）
在java.lang.Object.wait（本地方法）
- 等待<0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork（WorkQueueImpl.java:171）
锁定<0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl $ WorkerThread.run（ThreadPoolImpl.java:528）
p：thread-pool-1; w：18daemon prio = 10 tid = 0x0000000042a5a000在Object.wait（）中的nid = 0x5f85 $ 0x00007efd03785000
java.lang.Thread.State ：TIMED_WAITING（在对象监视器上）
在java.lang.Object.wait（本地方法）
- 等待< 0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork（WorkQueueImpl.java:171）
锁定<0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl $ WorkerThread.run（ThreadPoolImpl.java:528）
p：thread-pool-1; w：17daemon prio = 10 tid = 0x0000000042a57000在Object.wait（）中的nid = 0x5f84 $ 0x00007efd03886000
java.lang.Thread.State ：TIMED_WAITING（在对象监视器上）
在java.lang.Object.wait（本地方法）
- 等待< 0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork（WorkQueueImpl.java:171）
锁定<0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl $ WorkerThread.run（ThreadPoolImpl.java:528）
p：thread-pool-1; w：16daemon prio = 10 tid = 0x000000004321b000在Object.wait（）中为nid = 0x5f83 $ 0x00007efd03987000
java.lang.Thread.State ：TIMED_WAITING（在对象监视器上）
在java.lang.Object.wait（本地方法）
- 等待< 0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork（WorkQueueImpl.java:171）
锁定<0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl $ WorkerThread.run（ThreadPoolImpl.java:528）
p：thread-pool-1; w：15daemon prio = 10 tid = 0x0000000043219800在Object.wait（）中为nid = 0x5f82 $ 0x00007efd03a88000
java.lang.Thread.State ：TIMED_WAITING（在对象监视器上）
在java.lang.Object.wait（本地方法）
- 等待< 0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork（WorkQueueImpl.java:171）
锁定<0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl $ WorkerThread.run（ThreadPoolImpl.java:528）
p：thread-pool-1; w：14daemon prio = 10 tid = 0x00000000429b6000在Object.wait（）中的nid = 0x5f81 $ 0x00007efd03b89000
java.lang.Thread.State ：TIMED_WAITING（在对象监视器上）
在java.lang.Object.wait（本地方法）
- 等待< 0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork（WorkQueueImpl.java:171）
锁定<0x00007efd480fc228> （com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl）
在com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl $ WorkerThread.run（ThreadPoolImpl.java:528）
TP-Processor82daemon prio = 10 tid = 0x0000000043896800 nid = 0x5f80 runnable [0x00007efd03c8a000]
java.lang.Thread.State：RUNNABLE
at java.net.SocketInputStream。 socketRead0（Native Method）
在java.net.SocketInputStream.read（SocketInputStream.java:129）
在java.io.BufferedInputStream.fill（BufferedInputStream.java:218）
在java。 io.BufferedInputStream.read1（BufferedInputStream.java:258）
在java.io.BufferedInputStream.read（BufferedInputStream.java:317）
- 锁定< 0x00007efe72829510> （java.io.BufferedInputStream）
在org.apache.jk.common.ChannelSocket.read（ChannelSocket.java:607）
在org.apache.jk.common.ChannelSocket.receive（ChannelSocket。 java：545）
在org.apache.jk.common.ChannelSocket.processConnection（ChannelSocket.java:672）
在org.apache.jk.common.ChannelSocket $ SocketConnection.runIt（ChannelSocket.java： 876）
在org.apache.tomcat.util.threads.ThreadPool $ ControlRunnable.run（ThreadPool.java:684）
在java.lang.Thread.run（Thread.java:662）
Thread-44980daemon prio = 10 tid = 0x00007efd202c3800 nid = 0x5d74 runnable [0x00007efd067b5000]
java.lang.Thread.State：RUNNABLE
at java.net.SocketInputStream.socketRead0 （Native Method）
在java.net.SocketInputStream.read（SocketInputStream.java:129）
在java.io.BufferedInputStream.fill（BufferedInputStream.java:218）
在java.io .BufferedInputStream.read1（BufferedInputStream.java:258）
在java.io.BufferedInputStream.read（Buffe redInputStream.java:317）
- locked< 0x00007efd78fc0058> （java.io.BufferedInputStream）
在com.sun.jndi.ldap.Connection.run（Connection.java:808）
在java.lang.Thread.run（Thread.java:662）
Thread-44979daemon prio = 10 tid = 0x00007efd20d76000 nid = 0x5d73 runnable [0x00007efd062b0000]
java.lang.Thread.State：RUNNABLE
at java.net.SocketInputStream .socketRead0（Native Method）
在java.net.SocketInputStream.read（SocketInputStream.java:129）
在java.io.BufferedInputStream.fill（BufferedInputStream.java:218）
在java .io.BufferedInputStream.read1（BufferedInputStream.java:258）
在java.io.BufferedInputStream.read（BufferedInputStream.java:317）
- 锁定< 0x00007efd7789a4e0> （java.io.BufferedInputStream）
在com.sun.jndi.ldap.Connection.run（Connection.java:808）
在java.lang.Thread.run（Thread.java:662）
TP-Monitor守护进程prio = 10 tid = 0x00007efd2139f800在Object.wait（）中的nid = 0x5b1 [0x00007efd0d453000]
java.lang.Thread.State：TIMED_WAITING（在对象监视器上）
在java.lang.Object.wait（本机方法）
- 等待< 0x00007efd4d46d6c0> （一个org.apache.tomcat.util.threads.ThreadPool $ MonitorRunnable）
在org.apache.tomcat.util.threads.ThreadPool $ MonitorRunnable.run（ThreadPool.java:561）
- 锁定< ; 0x00007efd4d46d6c0> （一个org.apache.tomcat.util.threads.ThreadPool $ MonitorRunnable）
在java.lang.Thread.run（Thread.java:662）
TP-Monitor守护进程prio = 10 tid = 0x00007efd20143000在Object.wait（）中的nid = 0x5b0 $ 0x00007efd0d554000
java.lang.Thread.State：在对象监视器上的TIMED_WAITING
在java.lang.Object.wait（本机方法）
- 等待< 0x00007efd4d96dcd8> （一个org.apache.tomcat.util.threads.ThreadPool $ MonitorRunnable）
在org.apache.tomcat.util.threads.ThreadPool $ MonitorRunnable.run（ThreadPool.java:561）
- 锁定< ; 0x00007efd4d96dcd8> （一个org.apache.tomcat.util.threads.ThreadPool $ MonitorRunnable）
在java.lang.Thread.run（Thread.java:662）
httpWorkerThread-4848-48 daemon prio = 10 tid = 0x00007efd18a82800在Object.wait（）中的nid = 0x5aa $ 0x00007efd0db5a000
java.lang.Thread.State：WAITING（在对象监视器上）
在java.lang.Object.wait本地方法）
- 等待< 0x00007efd4d09a620> （com.sun.enterprise.web.connector.grizzly.LinkedListPipeline）
在java.lang.Object.wait（Object.java:485）
在com.sun.enterprise.web.connector。 grizzly.LinkedListPipeline.getTask（LinkedListPipeline.java:304）
- 锁定< 0x00007efd4d09a620> （com.sun.enterprise.web.connector.grizzly.LinkedListPipeline）
在com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run（WorkerThreadImpl.java:120）
GrizzlyPipelineStatWorkerThread-4848-2守护进程prio = 10 tid = 0x00007efd20033000 nid = 0x579等待条件[0x00007efd10c8b000]
java.lang.Thread.State：TIMED_WAITING（parking）
at sun .misc.Unsafe.park（Native Method）
- 停车等待< 0x00007efd4d098f30> （java.util.concurrent.locks.AbstractQueuedSynchronizer $ ConditionObject）
在java.util.concurrent.locks.LockSupport.parkNanos（LockSupport.java:198）
在java.util.concurrent.locks。 AbstractQueuedSynchronizer $ ConditionObject.awaitNanos（AbstractQueuedSynchronizer.java:2025）
在java.util.concurrent.DelayQueue.take（DelayQueue.java:164）
在java.util.concurrent.ScheduledThreadPoolExecutor $ DelayedWorkQueue.take（ ScheduledThreadPoolExecutor.java:609）
在java.util.concurrent.ScheduledThreadPoolExecutor $ DelayedWorkQueue.take（ScheduledThreadPoolExecutor.java:602）
在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:947）
在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:907）
在com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run（WorkerThreadImpl.java:113）
GrizzlyPipelineStatWorkerThread-4848-1守护进程prio = 10 tid = 0x00007efd2124f000 nid = 0x578等待条件on [0x00007efd10d8c000]
java.lang.Thread.State：TIMED_WAITING（parking）
at sun.misc.Unsafe.park（Native Method）
- 停车等待<0x00007efd4d098f30> （java.util.concurrent.locks.AbstractQueuedSynchronizer $ ConditionObject）
在java.util.concurrent.locks.LockSupport.parkNanos（LockSupport.java:198）
在java.util.concurrent.locks。 AbstractQueuedSynchronizer $ ConditionObject.awaitNanos（AbstractQueuedSynchronizer.java:2025）
在java.util.concurrent.DelayQueue.take（DelayQueue.java:164）
在java.util.concurrent.ScheduledThreadPoolExecutor $ DelayedWorkQueue.take（ ScheduledThreadPoolExecutor.java:609）
在java.util.concurrent.ScheduledThreadPoolExecutor $ DelayedWorkQueue.take（ScheduledThreadPoolExecutor.java:602）
在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:947）
在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:907）
在com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run（WorkerThreadImpl.java:113）
httpSSLWorkerThread-8181-48守护进程prio = 10 tid = 0x0000000042041800在Object.wait（）中为nid = 0x575 [0x00007efd1 108f000]
java.lang.Thread.State：WAITING（在对象监视器上）
在java.lang.Object.wait（本机方法）
- 等待< 0x00007efd4d0c8308> （a com.sun.enterprise.web.connector.grizzly.ssl.SSLPipeline）
在java.lang.Object.wait（Object.java:485）
在com.sun.enterprise.web。 connector.grizzly.LinkedListPipeline.getTask（LinkedListPipeline.java:304）
- locked< 0x00007efd4d0c8308> （com.sun.enterprise.web.connector.grizzly.ssl.SSLPipeline）
在com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run（SSLWorkerThread.java:109）
SelectorThread-4848prio = 10 tid = 0x00007efd207ba800 nid = 0x546 runnable [0x00007efd13fbe000]
java.lang.Thread.State：RUNNABLE
at sun.nio.ch .EPollArrayWrapper.epollWait（Native Method）
at sun.nio.ch.EPollArrayWrapper.poll（EPollArrayWrapper.java:210）
at sun.nio.ch.EPollSelectorImpl.doSelect（EPollSelectorImpl.java:65）
at sun.nio.ch.SelectorImpl.lockAndDoSelect（SelectorImpl.java:69）
- locked< 0x00007efd4d9c24c0> （a sun.nio.ch.Util $ 1）
- locked< 0x00007efd4d9c24a8> （一个java.util.Collections $ UnmodifiableSet）
- locked< 0x00007efd4d9c1d58> （a sun.nio.ch.EPollSelectorImpl）
at sun.nio.ch.SelectorImpl.select（SelectorImpl.java:80）
at com.sun.enterprise.web.connector.grizzly.SelectorThread。 doSelect（SelectorThread.java:1421）
在com.sun.enterprise.web.connector.grizzly.SelectorThread.startListener（SelectorThread.java:1336）
- locked< 0x00007efd4d9c27c0> （a [Ljava.lang.Object;）
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startEndpoint（SelectorThread.java:1299）
at com.sun.enterprise.web。 connector.grizzly.SelectorThread.run（SelectorThread.java:1275）
httpSSLWorkerThread-8080-49守护进程prio = 10 tid = 0x00007efd20bfc800在Object.wait（）中的nid = 0x541 [ 0x00007efd144c3000]
java.lang.Thread.State：WAITING（在对象监视器上）
在java.lang.Object.wait（本机方法）
- 等待< 0x00007efd4d0f97a8> （com.sun.enterprise.web.portunif.PortUnificationPipeline）
在java.lang.Object.wait（Object.java:485）
在com.sun.enterprise.web.connector.grizzly。 LinkedListPipeline.getTask（LinkedListPipeline.java:304）
- 锁定< 0x00007efd4d0f97a8> （com.sun.enterprise.web.portunif.PortUnificationPipeline）
在com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run（SSLWorkerThread.java:109）
SelectorThread-8181prio = 10 tid = 0x00007efd2161c000 nid = 0x50e runnable [0x00007efd177f6000]
java.lang.Thread.State：RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait （Native Method）
at sun.nio.ch.EPollArrayWrapper.poll（EPollArrayWrapper.java:210）
at sun.nio.ch.EPollSelectorImpl.doSelect（EPollSelectorImpl.java:65）
at sun.nio.ch.SelectorImpl.lockAndDoSelect（SelectorImpl.java:69）
- locked< 0x00007efd4d3a6800> （a sun.nio.ch.Util $ 1）
- locked< 0x00007efd4d3a67e8> （java.util.Collections $ UnmodifiableSet）
- locked< 0x00007efd4d3a6098> （a sun.nio.ch.EPollSelectorImpl）
at sun.nio.ch.SelectorImpl.select（SelectorImpl.java:80）
at com.sun.enterprise.web.connector.grizzly.SelectorThread。 doSelect（SelectorThread.java:1421）
在com.sun.enterprise.web.connector.grizzly.SelectorThread.startListener（SelectorThread.java:1336）
- locked< 0x00007efd4d3a6b00> （a [Ljava.lang.Object;）
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startEndpoint（SelectorThread.java:1299）
at com.sun.enterprise.web。 connector.grizzly.SelectorThread.run（SelectorThread.java:1275）
GrizzlyPipelineStatWorkerThread-8080-1守护进程prio = 10 tid = 0x00007efd20f4c800 nid = 0x50a等待条件[0x00007efd17bfa000]
java .lang.Thread.State：TIMED_WAITING（parking）
at sun.misc.Unsafe.park（Native Method）
- 停车等待< 0x00007efd4d120680> （java.util.concurrent.locks.AbstractQueuedSynchronizer $ ConditionObject）
在java.util.concurrent.locks.LockSupport.parkNanos（LockSupport.java:198）
在java.util.concurrent.locks。 AbstractQueuedSynchronizer $ ConditionObject.awaitNanos（AbstractQueuedSynchronizer.java:2025）
在java.util.concurrent.DelayQueue.take（DelayQueue.java:164）
在java.util.concurrent.ScheduledThreadPoolExecutor $ DelayedWorkQueue.take（ ScheduledThreadPoolExecutor.java:609）
在java.util.concurrent.ScheduledThreadPoolExecutor $ DelayedWorkQueue.take（ScheduledThreadPoolExecutor.java:602）
在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:947）
在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:907）
在com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run（WorkerThreadImpl.java:113）
GrizzlyPipelineStatWorkerThread-8080-0守护进程prio = 10 tid = 0x00007efd20966800 nid = 0x509等待条件on [0x00007efd17cfb000]
java.lang.Thread.State：TIMED_WAITING（parking）
at sun.misc.Unsafe.park（Native Method）
- 停车等待<0x00007efd4d120680> （java.util.concurrent.locks.AbstractQueuedSynchronizer $ ConditionObject）
在java.util.concurrent.locks.LockSupport.parkNanos（LockSupport.java:198）
在java.util.concurrent.locks。 AbstractQueuedSynchronizer $ ConditionObject.awaitNanos（AbstractQueuedSynchronizer.java:2025）
在java.util.concurrent.DelayQueue.take（DelayQueue.java:164）
在java.util.concurrent.ScheduledThreadPoolExecutor $ DelayedWorkQueue.take（ ScheduledThreadPoolExecutor.java:609）
在java.util.concurrent.ScheduledThreadPoolExecutor $ DelayedWorkQueue.take（ScheduledThreadPoolExecutor.java:602）
在java.util.concurrent.ThreadPoolExecutor.getTask（ThreadPoolExecutor.java:947）
在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:907）
在com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run（WorkerThreadImpl.java:113）
SelectorThread-8080prio = 10 tid = 0x00007efd201a0800 nid = 0x508 runnable [0x00007efd17dfc000]
java.l ang.Thread.State：RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait（Native Method）
at sun.nio.ch.EPollArrayWrapper.poll（EPollArrayWrapper.java:210）
在sun.nio.ch.EPollSelectorImpl.doSelect（EPollSelectorImpl.java:65）
at sun.nio.ch.SelectorImpl.lockAndDoSelect（SelectorImpl.java:69）
- locked <0x00007efd4dc827a0> （a sun.nio.ch.Util $ 1）
- locked< 0x00007efd4dc82788> （一个java.util.Collections $ UnmodifiableSet）
- locked< 0x00007efd4dc82088> （a sun.nio.ch.EPollSelectorImpl）
at sun.nio.ch.SelectorImpl.select（SelectorImpl.java:80）
at com.sun.enterprise.web.connector.grizzly.SelectorThread。 doSelect（SelectorThread.java:1421）
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startListener（SelectorThread.java:1336）
- locked< 0x00007efd4dc82aa0> （a [Ljava.lang.Object;）
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startEndpoint（SelectorThread.java:1299）
at com.sun.enterprise.web。 connector.grizzly.SelectorThread.run（SelectorThread.java:1275）
ContainerBackgroundProcessor [StandardEngine [com.sun.appserv]]daemon prio = 10 tid = 0x00007efd207af800 nid = 0x503等待条件[0x00007efd1c76c000 ]
java.lang.Thread.State：TIMED_WAITING（sleep）
在java.lang.Thread.sleep（本机方法）
在org.apache.catalina.core.ContainerBase $ ContainerBackgroundProcessor。 run（ContainerBase.java:1813）
java.lang.Thread.run（Thread.java:662）
Timer-13守护进程prio = 10 tid = 0x00007efd202d2800在Object.wait（）中的nid = 0x4fe（0x00007efd1c96e000）
java.lang.Thread.State：WAITING（在对象监视器上）
在java.lang.Object.wait（Native Method）
- 等待< 0x00007efd4ab21998> （java.util.TaskQueue）
在java.lang.Object.wait（Object.java:485）
在java.util.TimerThread.mainLoop（Timer.java:483）
- 锁定<0x00007efd4ab21998> （一个java.util.TaskQueue）
在java.util.TimerThread.run（Timer.java:462）
Timer-9守护进程prio = 10 tid = 0x00007efd209ad000 nid = 0x4f9在Object.wait（）[0x00007efd1d7d1000]
java.lang.Thread.State：TIMED_WAITING（在对象监视器上）
在java.lang.Object.wait（本机方法）
- 等待< 0x00007efd4a82c750> （java.util.TaskQueue）
在java.util.TimerThread.mainLoop（Timer.java:509）
- 锁定< 0x00007efd4a82c750> （java.util.TaskQueue）
java.util.TimerThread.run（Timer.java:462）
Thread-11守护进程prio = 10 tid = 0x00007efd183f6800 nid = 0x4c0等待条件[0x00007efd1efe7000]
java.lang.Thread.State：WAITING（parking）
at sun.misc.Unsafe.park（Native Method）
- 停车等待<0x00007efd48273738> ; （java.util.concurrent.locks.AbstractQueuedSynchronizer $ ConditionObject）
在java.util.concurrent.locks.LockSupport.park（LockSupport.java:158）
在java.util.concurrent.locks。 AbstractQueuedSynchronizer $ ConditionObject.await（AbstractQueuedSynchronizer.java:1987）
在java.util.concurrent.LinkedBlockingQueue.take（LinkedBlockingQueue.java:399）
在com.sun.enterprise.management.support.LoaderRegThread。 processFOREVER（LoaderRegThread.java:263）
在com.sun.enterprise.management.support.LoaderRegThread.run（LoaderRegThread.java:311）
SelectorThread守护程序prio = 10 tid = 0x00007efd183ff800 nid = 0x4ba runnable [0x00007efd1f5ed000]
java.lang.Thread.State：RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait（Native Method）
at sun。 nio.ch.EPollArrayWrapper.poll（EPollArrayWrapper.java:210）
at sun.nio.ch.EPollSelectorImpl.doSelect（EPollSelectorImpl.java:65）
at sun.nio.ch.SelectorImpl.lockAndDoSelect（选择器I mpl.java:69）
- locked< 0x00007efd48171e70> （a sun.nio.ch.Util $ 1）
- locked< 0x00007efd48171e58> （一个java.util.Collections $ UnmodifiableSet）
- locked< 0x00007efd48171a98> （a sun.nio.ch.EPollSelectorImpl）
at sun.nio.ch.SelectorImpl.select（SelectorImpl.java:80）
at com.sun.corba.ee.impl.transport.SelectorImpl。运行（SelectorImpl.java:283）
我正在寻找有关解释转储的一般信息，以便我可以在未来诊断问题。谢谢。
解决方案
可能有助于您的一些事情
- 以下是不同的线程状态解释为像BLOCKED，WAITING等。
- Java会为您找到死锁，您将看到如使用'jstack'检测Java线程死锁。
- 您可能有实时锁定。在这里，您需要有关系统的信息，并通过转储和源代码。
如何推进当前问题？ p>
- 根据这个转储，我可以告诉你有几个被多个线程锁定和等待的对象。寻找字符串' - 等待'和' - 锁定'。我不知道您的应用程序的逻辑更多。
In line with this question: How to get stack trace of a thread
I am wondering if anyone could point to information about interpreting Java thread stacks extracted with jstack.
My situation is that I've got a Java EE 5 application running on GlassFish v2.1.1 that hangs periodically (at least 2 -3 times a day).To get it running again I have to kill the Glassfish process and start the domain again. The application usually gets slower and slower responding until it finally hangs completely. Once it has hung I can't get a thread stack. I've been able to get a thread stack as it gets slower and slower but I can't see to locate the problem or the threads that have hung.
Here is the latest thread dump: http://issues.i2m.dk/attachments/66/threadstack.201103211046.txt
Snippet of thread dump:
"p: thread-pool-1; w: 20" daemon prio=10 tid=0x00007efd18843800 nid=0x5f89 in Object.wait() [0x00007efd03381000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork(WorkQueueImpl.java:171)
- locked <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:528)
"TP-Processor83" daemon prio=10 tid=0x0000000043179000 nid=0x5f87 runnable [0x00007efd03583000]
java.lang.Thread.State: RUNNABLE
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
- locked <0x00007efe72696090> (a java.io.BufferedInputStream)
at org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:607)
at org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:545)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:672)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:662)
"p: thread-pool-1; w: 19" daemon prio=10 tid=0x00007efd18710800 nid=0x5f86 in Object.wait() [0x00007efd03684000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork(WorkQueueImpl.java:171)
- locked <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:528)
"p: thread-pool-1; w: 18" daemon prio=10 tid=0x0000000042a5a000 nid=0x5f85 in Object.wait() [0x00007efd03785000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork(WorkQueueImpl.java:171)
- locked <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:528)
"p: thread-pool-1; w: 17" daemon prio=10 tid=0x0000000042a57000 nid=0x5f84 in Object.wait() [0x00007efd03886000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork(WorkQueueImpl.java:171)
- locked <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:528)
"p: thread-pool-1; w: 16" daemon prio=10 tid=0x000000004321b000 nid=0x5f83 in Object.wait() [0x00007efd03987000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork(WorkQueueImpl.java:171)
- locked <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:528)
"p: thread-pool-1; w: 15" daemon prio=10 tid=0x0000000043219800 nid=0x5f82 in Object.wait() [0x00007efd03a88000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork(WorkQueueImpl.java:171)
- locked <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:528)
"p: thread-pool-1; w: 14" daemon prio=10 tid=0x00000000429b6000 nid=0x5f81 in Object.wait() [0x00007efd03b89000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl.requestWork(WorkQueueImpl.java:171)
- locked <0x00007efd480fc228> (a com.sun.corba.ee.impl.orbutil.threadpool.WorkQueueImpl)
at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:528)
"TP-Processor82" daemon prio=10 tid=0x0000000043896800 nid=0x5f80 runnable [0x00007efd03c8a000]
java.lang.Thread.State: RUNNABLE
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
- locked <0x00007efe72829510> (a java.io.BufferedInputStream)
at org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:607)
at org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:545)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:672)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:662)
"Thread-44980" daemon prio=10 tid=0x00007efd202c3800 nid=0x5d74 runnable [0x00007efd067b5000]
java.lang.Thread.State: RUNNABLE
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
- locked <0x00007efd78fc0058> (a java.io.BufferedInputStream)
at com.sun.jndi.ldap.Connection.run(Connection.java:808)
at java.lang.Thread.run(Thread.java:662)
"Thread-44979" daemon prio=10 tid=0x00007efd20d76000 nid=0x5d73 runnable [0x00007efd062b0000]
java.lang.Thread.State: RUNNABLE
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
- locked <0x00007efd7789a4e0> (a java.io.BufferedInputStream)
at com.sun.jndi.ldap.Connection.run(Connection.java:808)
at java.lang.Thread.run(Thread.java:662)
"TP-Monitor" daemon prio=10 tid=0x00007efd2139f800 nid=0x5b1 in Object.wait() [0x00007efd0d453000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd4d46d6c0> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:561)
- locked <0x00007efd4d46d6c0> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at java.lang.Thread.run(Thread.java:662)
"TP-Monitor" daemon prio=10 tid=0x00007efd20143000 nid=0x5b0 in Object.wait() [0x00007efd0d554000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd4d96dcd8> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:561)
- locked <0x00007efd4d96dcd8> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at java.lang.Thread.run(Thread.java:662)
"httpWorkerThread-4848-48" daemon prio=10 tid=0x00007efd18a82800 nid=0x5aa in Object.wait() [0x00007efd0db5a000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd4d09a620> (a com.sun.enterprise.web.connector.grizzly.LinkedListPipeline)
at java.lang.Object.wait(Object.java:485)
at com.sun.enterprise.web.connector.grizzly.LinkedListPipeline.getTask(LinkedListPipeline.java:304)
- locked <0x00007efd4d09a620> (a com.sun.enterprise.web.connector.grizzly.LinkedListPipeline)
at com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run(WorkerThreadImpl.java:120)
"GrizzlyPipelineStatWorkerThread-4848-2" daemon prio=10 tid=0x00007efd20033000 nid=0x579 waiting on condition [0x00007efd10c8b000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00007efd4d098f30> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
at java.util.concurrent.DelayQueue.take(DelayQueue.java:164)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:609)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:602)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run(WorkerThreadImpl.java:113)
"GrizzlyPipelineStatWorkerThread-4848-1" daemon prio=10 tid=0x00007efd2124f000 nid=0x578 waiting on condition [0x00007efd10d8c000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00007efd4d098f30> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
at java.util.concurrent.DelayQueue.take(DelayQueue.java:164)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:609)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:602)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run(WorkerThreadImpl.java:113)
"httpSSLWorkerThread-8181-48" daemon prio=10 tid=0x0000000042041800 nid=0x575 in Object.wait() [0x00007efd1108f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd4d0c8308> (a com.sun.enterprise.web.connector.grizzly.ssl.SSLPipeline)
at java.lang.Object.wait(Object.java:485)
at com.sun.enterprise.web.connector.grizzly.LinkedListPipeline.getTask(LinkedListPipeline.java:304)
- locked <0x00007efd4d0c8308> (a com.sun.enterprise.web.connector.grizzly.ssl.SSLPipeline)
at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:109)
"SelectorThread-4848" prio=10 tid=0x00007efd207ba800 nid=0x546 runnable [0x00007efd13fbe000]
java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:210)
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
- locked <0x00007efd4d9c24c0> (a sun.nio.ch.Util$1)
- locked <0x00007efd4d9c24a8> (a java.util.Collections$UnmodifiableSet)
- locked <0x00007efd4d9c1d58> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.doSelect(SelectorThread.java:1421)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startListener(SelectorThread.java:1336)
- locked <0x00007efd4d9c27c0> (a [Ljava.lang.Object;)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startEndpoint(SelectorThread.java:1299)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.run(SelectorThread.java:1275)
"httpSSLWorkerThread-8080-49" daemon prio=10 tid=0x00007efd20bfc800 nid=0x541 in Object.wait() [0x00007efd144c3000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd4d0f97a8> (a com.sun.enterprise.web.portunif.PortUnificationPipeline)
at java.lang.Object.wait(Object.java:485)
at com.sun.enterprise.web.connector.grizzly.LinkedListPipeline.getTask(LinkedListPipeline.java:304)
- locked <0x00007efd4d0f97a8> (a com.sun.enterprise.web.portunif.PortUnificationPipeline)
at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:109)
"SelectorThread-8181" prio=10 tid=0x00007efd2161c000 nid=0x50e runnable [0x00007efd177f6000]
java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:210)
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
- locked <0x00007efd4d3a6800> (a sun.nio.ch.Util$1)
- locked <0x00007efd4d3a67e8> (a java.util.Collections$UnmodifiableSet)
- locked <0x00007efd4d3a6098> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.doSelect(SelectorThread.java:1421)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startListener(SelectorThread.java:1336)
- locked <0x00007efd4d3a6b00> (a [Ljava.lang.Object;)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startEndpoint(SelectorThread.java:1299)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.run(SelectorThread.java:1275)
"GrizzlyPipelineStatWorkerThread-8080-1" daemon prio=10 tid=0x00007efd20f4c800 nid=0x50a waiting on condition [0x00007efd17bfa000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00007efd4d120680> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
at java.util.concurrent.DelayQueue.take(DelayQueue.java:164)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:609)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:602)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run(WorkerThreadImpl.java:113)
"GrizzlyPipelineStatWorkerThread-8080-0" daemon prio=10 tid=0x00007efd20966800 nid=0x509 waiting on condition [0x00007efd17cfb000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00007efd4d120680> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
at java.util.concurrent.DelayQueue.take(DelayQueue.java:164)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:609)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:602)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run(WorkerThreadImpl.java:113)
"SelectorThread-8080" prio=10 tid=0x00007efd201a0800 nid=0x508 runnable [0x00007efd17dfc000]
java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:210)
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
- locked <0x00007efd4dc827a0> (a sun.nio.ch.Util$1)
- locked <0x00007efd4dc82788> (a java.util.Collections$UnmodifiableSet)
- locked <0x00007efd4dc82088> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.doSelect(SelectorThread.java:1421)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startListener(SelectorThread.java:1336)
- locked <0x00007efd4dc82aa0> (a [Ljava.lang.Object;)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.startEndpoint(SelectorThread.java:1299)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.run(SelectorThread.java:1275)
"ContainerBackgroundProcessor[StandardEngine[com.sun.appserv]]" daemon prio=10 tid=0x00007efd207af800 nid=0x503 waiting on condition [0x00007efd1c76c000]
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1813)
at java.lang.Thread.run(Thread.java:662)
"Timer-13" daemon prio=10 tid=0x00007efd202d2800 nid=0x4fe in Object.wait() [0x00007efd1c96e000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd4ab21998> (a java.util.TaskQueue)
at java.lang.Object.wait(Object.java:485)
at java.util.TimerThread.mainLoop(Timer.java:483)
- locked <0x00007efd4ab21998> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:462)
"Timer-9" daemon prio=10 tid=0x00007efd209ad000 nid=0x4f9 in Object.wait() [0x00007efd1d7d1000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00007efd4a82c750> (a java.util.TaskQueue)
at java.util.TimerThread.mainLoop(Timer.java:509)
- locked <0x00007efd4a82c750> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:462)
"Thread-11" daemon prio=10 tid=0x00007efd183f6800 nid=0x4c0 waiting on condition [0x00007efd1efe7000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00007efd48273738> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
at com.sun.enterprise.management.support.LoaderRegThread.processFOREVER(LoaderRegThread.java:263)
at com.sun.enterprise.management.support.LoaderRegThread.run(LoaderRegThread.java:311)
"SelectorThread" daemon prio=10 tid=0x00007efd183ff800 nid=0x4ba runnable [0x00007efd1f5ed000]
java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:210)
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
- locked <0x00007efd48171e70> (a sun.nio.ch.Util$1)
- locked <0x00007efd48171e58> (a java.util.Collections$UnmodifiableSet)
- locked <0x00007efd48171a98> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
at com.sun.corba.ee.impl.transport.SelectorImpl.run(SelectorImpl.java:283)
I'm looking for general information about interpreting the dump so that I can diagnose problems in the future. Thanks.
解决方案
Couple of things that might help you
- Here are the different thread states explained like BLOCKED, WAITING and etc.
- Java will find dead locks for you and you will see output like described in Detecting Java Thread Deadlocks with 'jstack'.
- You probably have a live lock. Here you need information on your system and going through the dump and the source code.
How to move forward with current problem?
- Based on this dump I can tell you there are couple of objects that are locked and waited on from multiple threads. Look for strings '- waiting on' and '- locked'. I don't know the logic of your app to tell much more.
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