{"id":776,"date":"2022-12-28T13:54:13","date_gmt":"2023-11-08T04:28:45","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/java%e7%ba%bf%e7%a8%8b%e8%bd%ac%e5%82%a8-visualvm-jstack-kill-3-jcmd\/"},"modified":"2025-08-03T07:21:45","modified_gmt":"2025-08-02T23:21:45","slug":"java%e7%ba%bf%e7%a8%8b%e8%bd%ac%e5%82%a8-visualvm-jstack-kill-3-jcmd","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%ba%bf%e7%a8%8b%e8%bd%ac%e5%82%a8-visualvm-jstack-kill-3-jcmd\/","title":{"rendered":"Java\u7ebf\u7a0b\u8f6c\u50a8\u5b8c\u5168\u6307\u5357\uff1aVisualVM\u3001jstack\u3001kill-3\u548cjcmd\u5de5\u5177\u4f7f\u7528\u6559\u7a0b"},"content":{"rendered":"

Java\u7ebf\u7a0b\u8f6c\u50a8\u662fJVM\u4e2d\u6240\u6709\u6d3b\u52a8\u7ebf\u7a0b\u7684\u5217\u8868\u3002<\/p>\n

Java\u7ebf\u7a0b\u8f6c\u50a8<\/h2>\n

Java\u7ebf\u7a0b\u8f6c\u50a8\u5728\u5206\u6790\u5e94\u7528\u7a0b\u5e8f\u74f6\u9888\u548c\u6b7b\u9501\u60c5\u51b5\u65b9\u9762\u975e\u5e38\u6709\u5e2e\u52a9\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u5b66\u4e60\u591a\u79cd\u751f\u6210Java\u7a0b\u5e8f\u7684\u7ebf\u7a0b\u8f6c\u50a8\u7684\u65b9\u6cd5\u3002\u8fd9\u4e9b\u8bf4\u660e\u9002\u7528\u4e8e*nix\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4f46\u5728Windows\u4e2d\uff0c\u6b65\u9aa4\u53ef\u80fd\u4f1a\u6709\u4e9b\u4e0d\u540c\u3002<\/p>\n

VisualVM Profiler<\/h3>\n

\u5982\u679c\u4f60\u6b63\u5728\u5206\u6790\u5e94\u7528\u7a0b\u5e8f\u7684\u901f\u5ea6\u6162\u95ee\u9898\uff0c\u4f60\u5fc5\u987b\u4f7f\u7528\u4e00\u4e2a\u5206\u6790\u5668\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528VisualVM Profiler\u8f7b\u677e\u5730\u4e3a\u4efb\u4f55\u8fdb\u7a0b\u751f\u6210\u7ebf\u7a0b\u8f6c\u50a8\u3002\u4f60\u53ea\u9700\u53f3\u952e\u70b9\u51fb\u8fd0\u884c\u4e2d\u7684\u8fdb\u7a0b\uff0c\u7136\u540e\u70b9\u51fb”Thread Dump”\u9009\u9879\u6765\u751f\u6210\u5b83\u3002<\/p>\n

jstack<\/h3>\n

Java\u81ea\u5e26\u4e86jstack\u5de5\u5177\uff0c\u901a\u8fc7\u5b83\u6211\u4eec\u53ef\u4ee5\u4e3a\u4e00\u4e2aJava\u8fdb\u7a0b\u751f\u6210\u7ebf\u7a0b\u8f6c\u50a8\u3002\u8fd9\u662f\u4e00\u4e2a\u4e24\u6b65\u9aa4\u7684\u8fc7\u7a0b\u3002<\/p>\n

    \n
  1. \u4f7f\u7528ps -eaf | grep java<\/code>\u547d\u4ee4\u627e\u5230Java\u8fdb\u7a0b\u7684PID\u3002<\/li>\n
  2. \u8fd0\u884cjstack\u5de5\u5177\uff0c\u4f7f\u7528jstack PID<\/code>\u547d\u4ee4\u5c06\u7ebf\u7a0b\u8f6c\u50a8\u7684\u8f93\u51fa\u751f\u6210\u5230\u63a7\u5236\u53f0\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u547d\u4ee4jstack PID >> mydumps.tdump<\/code>\u5c06\u7ebf\u7a0b\u8f6c\u50a8\u8f93\u51fa\u8ffd\u52a0\u5230\u6587\u4ef6\u4e2d\u3002<\/li>\n<\/ol>\n

    kill -3<\/h3>\n

    \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528kill -3 PID<\/code>\u547d\u4ee4\u6765\u751f\u6210\u7ebf\u7a0b\u8f6c\u50a8\u3002\u8fd9\u4e0e\u5176\u4ed6\u751f\u6210\u7ebf\u7a0b\u8f6c\u50a8\u7684\u65b9\u5f0f\u7565\u6709\u4e0d\u540c\u3002\u5f53\u53d1\u51fakill\u547d\u4ee4\u65f6\uff0c\u7ebf\u7a0b\u8f6c\u50a8\u5c06\u751f\u6210\u5230\u7a0b\u5e8f\u7684\u6807\u51c6\u8f93\u51fa\u4e2d\u3002\u6240\u4ee5\u5982\u679c\u662f\u4e00\u4e2a\u5e26\u6709\u63a7\u5236\u53f0\u4f5c\u4e3a\u6807\u51c6\u8f93\u51fa\u7684Java\u7a0b\u5e8f\uff0c\u7ebf\u7a0b\u8f6c\u50a8\u5c06\u6253\u5370\u5728\u63a7\u5236\u53f0\u4e0a\u3002\u5982\u679cJava\u7a0b\u5e8f\u662f\u4e00\u4e2a\u5e26\u6709catalina.out\u4f5c\u4e3a\u6807\u51c6\u8f93\u51fa\u7684Tomcat\u670d\u52a1\u5668\uff0c\u90a3\u4e48\u7ebf\u7a0b\u8f6c\u50a8\u5c06\u4f1a\u751f\u6210\u5230\u6587\u4ef6\u4e2d\u3002<\/p>\n

    jcmd<\/h3>\n

    Java 8\u5f15\u5165\u4e86jcmd\u5b9e\u7528\u7a0b\u5e8f\u3002\u5982\u679c\u4f60\u4f7f\u7528\u7684\u662fJava 8\u6216\u66f4\u9ad8\u7248\u672c\uff0c\u4f60\u5e94\u8be5\u4f7f\u7528\u5b83\u800c\u4e0d\u662fjstack\u3002\u4f7f\u7528jcmd\u751f\u6210\u7ebf\u7a0b\u8f6c\u50a8\u7684\u547d\u4ee4\u662fjcmd PID Thread.print<\/code>\u3002<\/p>\n

    \u4ee5\u4e0b\u662f\u751f\u6210Java\u7ebf\u7a0b\u8f6c\u50a8\u7684\u56db\u79cd\u4e0d\u540c\u65b9\u6cd5\u3002\u901a\u5e38\u6211\u66f4\u559c\u6b22\u4f7f\u7528jstack\u6216jcmd\u547d\u4ee4\u6765\u751f\u6210\u7ebf\u7a0b\u8f6c\u50a8\u5e76\u8fdb\u884c\u5206\u6790\u3002\u8bf7\u6ce8\u610f\uff0c\u65e0\u8bba\u60a8\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\uff0c\u7ebf\u7a0b\u8f6c\u50a8\u59cb\u7ec8\u662f\u76f8\u540c\u7684\u3002<\/p>\n

    Java\u7ebf\u7a0b\u8f6c\u50a8\u793a\u4f8b<\/h3>\n

    \u5728\u6211\u7684\u6700\u540e\u4e00\u7bc7\u535a\u6587\u4e2d\uff0c\u6211\u89e3\u91ca\u4e86Java\u8ba1\u65f6\u5668\uff0c\u8fd9\u91cc\u662f\u540c\u4e00\u7a0b\u5e8f\u751f\u6210\u7684\u7ebf\u7a0b\u8f6c\u50a8\u3002<\/p>\n

    2012-12-26 22:28:39\r\nFull thread dump Java HotSpot(TM) 64-Bit Server VM (23.5-b02 mixed mode):\r\n\r\n\"Attach Listener\" daemon prio=5 tid=0x00007fb7d8000000 nid=0x4207 waiting on condition [0x0000000000000000]\r\n   java.lang.Thread.State: RUNNABLE\r\n\r\n\"Timer-0\" daemon prio=5 tid=0x00007fb7d4867000 nid=0x5503 waiting on condition [0x00000001604d9000]\r\n   java.lang.Thread.State: TIMED_WAITING (sleeping)\r\n\tat java.lang.Thread.sleep(Native Method)\r\n\tat com.Olivia.threads.MyTimerTask.completeTask(MyTimerTask.java:19)\r\n\tat com.Olivia.threads.MyTimerTask.run(MyTimerTask.java:12)\r\n\tat java.util.TimerThread.mainLoop(Timer.java:555)\r\n\tat java.util.TimerThread.run(Timer.java:505)\r\n\r\n\"Service Thread\" daemon prio=5 tid=0x00007fb7d482c000 nid=0x5303 runnable [0x0000000000000000]\r\n   java.lang.Thread.State: RUNNABLE\r\n\r\n\"C2 CompilerThread1\" daemon prio=5 tid=0x00007fb7d482b800 nid=0x5203 waiting on condition [0x0000000000000000]\r\n   java.lang.Thread.State: RUNNABLE\r\n\r\n\"C2 CompilerThread0\" daemon prio=5 tid=0x00007fb7d4829800 nid=0x5103 waiting on condition [0x0000000000000000]\r\n   java.lang.Thread.State: RUNNABLE\r\n\r\n\"Signal Dispatcher\" daemon prio=5 tid=0x00007fb7d4828800 nid=0x5003 runnable [0x0000000000000000]\r\n   java.lang.Thread.State: RUNNABLE\r\n\r\n\"Finalizer\" daemon prio=5 tid=0x00007fb7d4812000 nid=0x3f03 in Object.wait() [0x000000015fd26000]\r\n   java.lang.Thread.State: WAITING (on object monitor)\r\n\tat java.lang.Object.wait(Native Method)\r\n\t- waiting on <0x0000000140a25798> (a java.lang.ref.ReferenceQueue$Lock)\r\n\tat java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)\r\n\t- locked <0x0000000140a25798> (a java.lang.ref.ReferenceQueue$Lock)\r\n\tat java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)\r\n\tat java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:177)\r\n\r\n\"Reference Handler\" daemon prio=5 tid=0x00007fb7d4811800 nid=0x3e03 in Object.wait() [0x000000015fc23000]\r\n   java.lang.Thread.State: WAITING (on object monitor)\r\n\tat java.lang.Object.wait(Native Method)\r\n\t- waiting on <0x0000000140a25320> (a java.lang.ref.Reference$Lock)\r\n\tat java.lang.Object.wait(Object.java:503)\r\n\tat java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)\r\n\t- locked <0x0000000140a25320> (a java.lang.ref.Reference$Lock)\r\n\r\n\"main\" prio=5 tid=0x00007fb7d5000800 nid=0x1703 waiting on condition [0x0000000106116000]\r\n   java.lang.Thread.State: TIMED_WAITING (sleeping)\r\n\tat java.lang.Thread.sleep(Native Method)\r\n\tat com.Olivia.threads.MyTimerTask.main(MyTimerTask.java:33)\r\n\r\n\"VM Thread\" prio=5 tid=0x00007fb7d480f000 nid=0x3d03 runnable \r\n\r\n\"GC task thread#0 (ParallelGC)\" prio=5 tid=0x00007fb7d500d800 nid=0x3503 runnable \r\n\r\n\"GC task thread#1 (ParallelGC)\" prio=5 tid=0x00007fb7d500e000 nid=0x3603 runnable \r\n\r\n\"GC task thread#2 (ParallelGC)\" prio=5 tid=0x00007fb7d5800000 nid=0x3703 runnable \r\n\r\n\"GC task thread#3 (ParallelGC)\" prio=5 tid=0x00007fb7d5801000 nid=0x3803 runnable \r\n\r\n\"GC task thread#4 (ParallelGC)\" prio=5 tid=0x00007fb7d5801800 nid=0x3903 runnable \r\n\r\n\"GC task thread#5 (ParallelGC)\" prio=5 tid=0x00007fb7d5802000 nid=0x3a03 runnable \r\n\r\n\"GC task thread#6 (ParallelGC)\" prio=5 tid=0x00007fb7d5802800 nid=0x3b03 runnable \r\n\r\n\"GC task thread#7 (ParallelGC)\" prio=5 tid=0x00007fb7d5803800 nid=0x3c03 runnable \r\n\r\n\"VM Periodic Task Thread\" prio=5 tid=0x00007fb7d481e800 nid=0x5403 waiting on condition \r\n\r\nJNI global references: 116\r\n<\/code><\/pre>\n
    \u7ebf\u7a0b\u8f6c\u50a8\u662f\u6240\u6709\u7ebf\u7a0b\u7684\u5217\u8868\uff0c\u6bcf\u4e2a\u6761\u76ee\u6309\u51fa\u73b0\u987a\u5e8f\u663e\u793a\u7ebf\u7a0b\u7684\u4fe1\u606f\uff0c\u5176\u4e2d\u5305\u62ec\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n
      \n
    • \u7ebf\u7a0b\u540d\u79f0<\/strong>\uff1a\u7ebf\u7a0b\u7684\u540d\u79f0<\/li>\n
    • \u7ebf\u7a0b\u4f18\u5148\u7ea7<\/strong>\uff1a\u7ebf\u7a0b\u7684\u4f18\u5148\u7ea7<\/li>\n
    • \u7ebf\u7a0bID<\/strong>\uff1a\u8868\u793a\u7ebf\u7a0b\u7684\u552f\u4e00ID<\/li>\n
    • \u7ebf\u7a0b\u72b6\u6001<\/strong>\uff1a\u63d0\u4f9b\u5f53\u524d\u7ebf\u7a0b\u7684\u72b6\u6001\uff0c\u4f8b\u5982\u53ef\u8fd0\u884c\uff0c\u7b49\u5f85\uff0c\u963b\u585e\u3002\u5728\u5206\u6790\u6b7b\u9501\u65f6\uff0c\u67e5\u770b\u88ab\u963b\u585e\u7684\u7ebf\u7a0b\u4ee5\u53ca\u5b83\u4eec\u5c1d\u8bd5\u83b7\u53d6\u9501\u5b9a\u7684\u8d44\u6e90\u3002<\/li>\n
    • \u7ebf\u7a0b\u8c03\u7528\u6808<\/strong>\uff1a\u63d0\u4f9b\u7ebf\u7a0b\u7684\u5173\u952e\u5806\u6808\u4fe1\u606f\u3002\u8fd9\u662f\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u7ebf\u7a0b\u83b7\u5f97\u7684\u9501\u4ee5\u53ca\u5b83\u662f\u5426\u6b63\u5728\u7b49\u5f85\u4efb\u4f55\u9501\u7684\u5730\u65b9\u3002<\/li>\n<\/ul>\n
      \u8fd9\u5c31\u662f\u6709\u5173Java\u7ebf\u7a0b\u8f6c\u50a8\u7684\u6240\u6709\u5185\u5bb9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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