查看jvm线程日志

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最新推荐文章于 2024-11-03 22:42:33 发布

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分类专栏： java 文章标签： java jvm 线程日志

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本文介绍了如何通过`netstat`命令找到指定端口对应的进程ID，然后利用`jstack`工具查看该进程的JVM线程日志。通过`jstack 10303 > 111.log`可以将线程状态输出到111.log文件中，特别适合分析线程阻塞和GC超时问题。

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这个命令能看到端口对应的pid sudo netstat -lunpt | grep 8080

查看线程日志
./jstack 10303 即可如果想把内容打印到文本里即 ./jstack pid >111.log 打印到 111.log文件中

2018-12-25 10:30:32
Full thread dump Java HotSpot(TM) 64-Bit Server VM (16.0-b13 mixed mode):

"Attach Listener" daemon prio=10 tid=0x00007fda50001800 nid=0x6fd6 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"resin-214" daemon prio=10 tid=0x00007fda3805d000 nid=0x6d9c waiting on condition [0x00007fd979cdb000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:283)
	at com.caucho.env.thread2.ResinThread2.park(ResinThread2.java:196)
	at com.caucho.env.thread2.ResinThread2.runTasks(ResinThread2.java:147)
	at com.caucho.env.thread2.ResinThread2.run(ResinThread2.java:118)
"resin-port-80-183" daemon prio=10 tid=0x00007fda38041000 nid=0x6968 runnable [0x00007fd97aceb000]
   java.lang.Thread.State: RUNNABLE
	at com.caucho.vfs.JniSocketImpl.nativeAccept(Native Method)
	at com.caucho.vfs.JniSocketImpl.accept(JniSocketImpl.java:150)
	- locked <0x00007fdcb73e0a18> (a java.lang.Object)
	at com.caucho.vfs.JniServerSocketImpl.accept(JniServerSocketImpl.java:267)
	at com.caucho.network.listen.TcpPort.accept(TcpPort.java:1373)
	at com.caucho.network.listen.TcpSocketLink.accept(TcpSocketLink.java:1020)
	at com.caucho.network.listen.TcpSocketLink.handleAcceptTaskImpl(TcpSocketLink.java:970)
	at com.caucho.network.listen.ConnectionTask.runThread(ConnectionTask.java:117)
	at com.caucho.network.listen.ConnectionTask.run(ConnectionTask.java:93)
	at com.caucho.network.listen.SocketLinkThreadLauncher.handleTasks(SocketLinkThreadLauncher.java:169)
	at com.caucho.network.listen.TcpSocketAcceptThread.run(TcpSocketAcceptThread.java:61)
	at com.caucho.env.thread2.ResinThread2.runTasks(ResinThread2.java:173)
	at com.caucho.env.thread2.ResinThread2.run(ResinThread2.java:118)
"com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1" daemon prio=10 tid=0x00007fda0c188000 nid=0x6964 in Object.wait() [0x00007fd97b0ef000]
   java.lang.Thread.State: TIMED_WAITING (on object monitor)
	at java.lang.Object.wait(Native Method)
	- waiting on <0x00007fdcb6c89320> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
	at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:534)
	- locked <0x00007fdcb6c89320> (a com.mchange.v2.async.ThreadPoolAsynchronousRunner)
"VM Thread" prio=10 tid=0x00007fdccc06b000 nid=0x684a runnable 

"GC task thread#0 (ParallelGC)" prio=10 tid=0x00007fdccc01b000 nid=0x6842 runnable

上述日志为线程发生阻塞并超时被gc