我们正在使用JDK 1.8版本运行WildFly 12。由于java.exe的CPU使用率很高（超过90％），我们在Web应用程序中遇到门户关闭/运行缓慢的问题。然后，我们使用JStack进行了线程转储，并且大多数高级CPU线程都指向“ org.xnio.nio”
门户网站在 HTTPS
中运行CPU： 8核
总RAM： 24 GB
分配的JVM内存：从1 GB（最小）到5 GB（最大）
进行线程转储时占用的JVM内存： 4 GB
数据库位于单独的计算机中
以下是线程转储结果（高CPU线程数）：
"default I/O-1" #95 prio=5 os_prio=0 tid=0x00000000260bf800 nid=0x1988 runnable [0x000000002e49f000]
java.lang.Thread.State: RUNNABLE
at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:147)
at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136)
at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:59)
at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
at io.undertow.conduits.ReadTimeoutStreamSourceConduit$2.readReady(ReadTimeoutStreamSourceConduit.java:89)
at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1145)
at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
at org.xnio.nio.WorkerThread.run(WorkerThread.java:591)
"default I/O-13" #108 prio=5 os_prio=0 tid=0x0000000022186000 nid=0x2310 runnable [0x000000002f09f000]
java.lang.Thread.State: RUNNABLE
at java.lang.Object.notifyAll(Native Method)
at sun.nio.ch.WindowsSelectorImpl$StartLock.startThreads(WindowsSelectorImpl.java:189)
- locked <0x00000006618ae440> (a sun.nio.ch.WindowsSelectorImpl$StartLock)
at sun.nio.ch.WindowsSelectorImpl$StartLock.access$300(WindowsSelectorImpl.java:181)
at sun.nio.ch.WindowsSelectorImpl.doSelect(WindowsSelectorImpl.java:153)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
- locked <0x000000066508ea18> (a sun.nio.ch.Util$3)
- locked <0x000000066508ea08> (a java.util.Collections$UnmodifiableSet)
- locked <0x0000000665082b98> (a sun.nio.ch.WindowsSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
at org.xnio.nio.WorkerThread.run(WorkerThread.java:551)
"default I/O-13" #108 prio=5 os_prio=0 tid=0x0000000022186000 nid=0x2310 runnable [0x000000002f09e000]
java.lang.Thread.State: RUNNABLE
at java.util.AbstractCollection.toArray(AbstractCollection.java:183)
at sun.nio.ch.Util$3.toArray(Util.java:322)
at org.xnio.nio.WorkerThread.run(WorkerThread.java:570)
- locked <0x000000066508ea18> (a sun.nio.ch.Util$3)
- locked <0x0000000665082b98> (a sun.nio.ch.WindowsSelectorImpl)
"default I/O-5" #100 prio=5 os_prio=0 tid=0x00000000260c0000 nid=0x858 runnable [0x000000002e89e000]
java.lang.Thread.State: RUNNABLE
at org.xnio.nio.WorkerThread.run(WorkerThread.java:480)
该问题发生了（2-5）天一次。
预先感谢