Too many open files?

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My linux box has already extend the limit of no. of open files to 8192. From the output of "lsof" command, there are less than 2500 opened files. Yet I still got the following problem.

SEVERE com.gigaspaces.lrmi: cant create a selector for async calls
java.io.IOException: Too many open files
    at sun.nio.ch.EPollArrayWrapper.epollCreate(Native Method)
    at sun.nio.ch.EPollArrayWrapper.<init>(EPollArrayWrapper.java:68)
    at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:52)
    at sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
    at java.nio.channels.Selector.open(Selector.java:209)
    at com.gigaspaces.lrmi.nio.selector.handler.AbstractSelectorThread.<init>(AbstractSelectorThread.java:37)
....

I'm using XAP6.6.3. No. of GSC is 4.

Any clue?

Thank you very much,

Joe

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