如何确定我的Java线程正在等待什么?

时间:2018-09-11 16:43:30

标签: java multithreading locking wait dump

我在Amazon Linux上将JDK 8与Wildfly 11一起使用。我已经安装了jstack。我试图弄清楚为什么CPU使用率会上升,而执行线程转储会显示类似这样的情况

"default task-80" #266 prio=5 os_prio=0 tid=0x00000000090f0000 nid=0x2458 waiting on condition [0x00007f32204d7000]
   java.lang.Thread.State: WAITING (parking)
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0x0000000181c9e470> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
        at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)

如何确定线程正在等待什么条件或锁定?

0 个答案:

没有答案