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  1. JDK
  2. JDK-6481709

(se) epoll based Selector throws java.io.IOException: Operation not permitted during load

    Details

    • Subcomponent:
    • Resolved In Build:
      b03
    • CPU:
      generic, x86
    • OS:
      linux
    • Verification:
      Not verified

      Backports

        Description

        FULL PRODUCT VERSION :
        robo@troll:~/src/java/RabbIT3$ ~/pkg/java/jdk1.6.0/bin/java -version
        java version "1.6.0-rc"
        Java(TM) SE Runtime Environment (build 1.6.0-rc-b100)
        Java HotSpot(TM) 64-Bit Server VM (build 1.6.0-rc-b100, mixed mode)

        ADDITIONAL OS VERSION INFORMATION :
        Linux troll 2.6.15-23-amd64-generic #1 SMP PREEMPT Tue May 23 13:45:47 UTC 2006 x86_64 GNU/Linux

        A DESCRIPTION OF THE PROBLEM :
        Trying to run ab2 to benchmark the rabbit proxy, http://www.khelekore.org/rabbit/

        Download the proxy, and start it, then run:
        ab2 -n10000 -c50 -X localhost:9666 http://www.khelekore.org/~robo/arcs.png

        With java/5 (1.5.0._08) everything works without problems.

        With java/6 I get frequent but random:
        java.io.IOException: Operation not permitted
                at sun.nio.ch.EPollArrayWrapper.epollCtl(Native Method)
                at sun.nio.ch.EPollArrayWrapper.updateRegistrations(EPollArrayWrapper.java:202)
                at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:183)
                at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
                at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
                at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
                at rabbit.proxy.HttpProxy.run(HttpProxy.java:394)
                at java.lang.Thread.run(Thread.java:619)


        And ab2 say something like
        Benchmarking www.khelekore.org [through localhost:9666] (be patient)
        apr_recv: (104)
          Total of 399 requests completed


        STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
        Download the proxy from http://www.khelekore.org/rabbit/ and start it, then run:
        ab2 -n10000 -c50 -X localhost:9666 http://www.khelekore.org/~robo/arcs.png



        EXPECTED VERSUS ACTUAL BEHAVIOR :
        EXPECTED -
        No errors.
        ACTUAL -
        proxy crashes and fails to respond.

        ERROR MESSAGES/STACK TRACES THAT OCCUR :
        ava.io.IOException: Operation not permitted
                at sun.nio.ch.EPollArrayWrapper.epollCtl(Native Method)
                at sun.nio.ch.EPollArrayWrapper.updateRegistrations(EPollArrayWrapper.java:202)
                at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:183)
                at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
                at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
                at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
                at rabbit.proxy.HttpProxy.run(HttpProxy.java:394)
                at java.lang.Thread.run(Thread.java:619)


        REPRODUCIBILITY :
        This bug can be reproduced often.

        CUSTOMER SUBMITTED WORKAROUND :
        stay with java/5

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                • Assignee:
                  alanb Alan Bateman
                  Reporter:
                  ndcosta Nelson Dcosta (Inactive)
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