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[jetty-users] high cpu load NIO (Jetty7.6.0)
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Hi there,
after running for 2 days, we have suddenly high cpu (permanent 100%), even there's no traffic, cpu usage wouldnt go down even there's no traffic.
env:
jetty 7.6.0 (embedded)
linux 64bit (opensuse, kernel 2.6.37.1-1.2
oracle-jdk 1.6.0.31
from jconsole i got these 2 threads, each use 50-60% cpu:
sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:210)
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
org.eclipse.jetty.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:564)
org.eclipse.jetty.io.nio.SelectorManager$1.run(SelectorManager.java:285)
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
java.lang.Thread.run(Thread.java:662)
sun.nio.ch.EPollArrayWrapper.interrupt(Native Method)
sun.nio.ch.EPollArrayWrapper.interrupt(EPollArrayWrapper.java:256)
sun.nio.ch.EPollSelectorImpl.wakeup(EPollSelectorImpl.java:175)
org.eclipse.jetty.io.nio.SelectorManager$SelectSet.wakeup(SelectorManager.java:817)
org.eclipse.jetty.io.nio.SelectChannelEndPoint.updateKey(SelectChannelEndPoint.java:520)
org.eclipse.jetty.io.nio.SelectChannelEndPoint.close(SelectChannelEndPoint.java:698)
org.eclipse.jetty.io.nio.SslConnection.process(SslConnection.java:377)
org.eclipse.jetty.io.nio.SslConnection.access$900(SslConnection.java:43)
org.eclipse.jetty.io.nio.SslConnection$SslEndPoint.flush(SslConnection.java:718)
org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:85)
org.eclipse.jetty.io.nio.SslConnection.handle(SslConnection.java:191)
org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
java.lang.Thread.run(Thread.java:662)
any hints ?
thanx
