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Performance and scalability: Heap Analysis Tool - Error

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  1. Heap Analysis Tool - Error (2 messages)

    • Posted by: Jamil Khan
    • Posted on: May 17 2004 11:21 EDT
    Hello Group - I am using the Sun's Heap Analysis Tool ( HAT ) to analyse the memory leaks in our Appserver.

    I enabled Hprof option while the server starts up and it created a binary file java.hprof.jamil.

    But when i try to use the HAT using this file, i am getting this following error:

    Started HTTP server on port 7000
    Reading from /apps/websphere/AppServer/java.hprof.jamil...
    Dump file created Fri May 14 15:46:46 EDT 2004
    java.io.EOFException
            at java.lang.Throwable.fillInStackTrace(Native Method)
            at java.lang.Throwable.fillInStackTrace(Compiled Code)
            at java.lang.Throwable.<init>(Compiled Code)
            at java.lang.Exception.<init>(Compiled Code)
            at java.io.IOException.<init>(IOException.java:28)
            at java.io.EOFException.<init>(EOFException.java:36)
            at java.io.DataInputStream.readUnsignedByte(Compiled Code)
            at hat.parser.HprofReader.skipBytes(Compiled Code)
            at hat.parser.HprofReader.read(Compiled Code)
            at hat.parser.Reader.readFile(Reader.java:91)
            at hat.Main.main(Compiled Code)


    Have anyone encountered this error. Looks like there seems to be problem in the format of the file created.

    Any help is appreciated.

    Thanks in Advance.
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    Threaded Messages (2)

  2. Heap Analysis Tool - Error[ Go to top ]

    hi,

    This may be the problem in the creation of a binary file.

    Check out this article (which has source code of HAT to help you debug the problem )

    http://java.sun.com/developer/onlineTraining/Programming/JDCBook/perf3.html

    Bhagvan K
    http://www.architectcorner.com
    Reply to this Reply to original

  3. EOFException while reading binary file[ Go to top ]

    I am also getting the same issue, have you resolved this, if yes, please help. Thanks in advance
    Reply to this Reply to original