My jdk version is 1.8. I checked the jetty code and found that jetty does some work for jvm bugs in jdk1.6 and 1.7. But what I use is jdk 1.8. This should be a bug of jetty.
The workearounds jetty takes is to check the time cost of JAVA NIO selector's select operation, and thinks it's BUG appearing when the time cost is too small. see https://wiki.eclipse.org/Jetty/Feature/JVM_NIO_Bug According to jetty code, some system property can be set to control the behaviour of this workearound. I'v set "-Dorg.mortbay.io.nio.JVMBUG_THRESHHOLD=2147483647 -Dorg.mortbay.io.nio.MONITOR_PERIOD=0", maybe it cound work.
