gc overhead limit exceeded

[haolinl...@gmail.com]

Using the grammar for java 8 given in the antlr grammar library, trying to lex, parse and generate a parse tree of a java program with about 1k lines of code or more 

breaks my GC. Ive uploaded a screen shot of the error message i get.  I also sometimes get out of memory error, although i increase the heap space of the GC.

Would anyone know any solution or where the problem originates from? 

[Eric Vergnaud]

Maybe not enough memory allocated to the java process?

[Jim Idle]

You don't say what options you are supplying to the invocation.  

C:>java -X

    -Xmixed           mixed mode execution (default)

    -Xint             interpreted mode execution only

    -Xbootclasspath:<directories and zip/jar files separated by ;>

                      set search path for bootstrap classes and resources

    -Xbootclasspath/a:<directories and zip/jar files separated by ;>

                      append to end of bootstrap class path

    -Xbootclasspath/p:<directories and zip/jar files separated by ;>

                      prepend in front of bootstrap class path

    -Xdiag            show additional diagnostic messages

    -Xnoclassgc       disable class garbage collection

    -Xincgc           enable incremental garbage collection

    -Xloggc:<file>    log GC status to a file with time stamps

    -Xbatch           disable background compilation

    -Xms<size>        set initial Java heap size

    -Xmx<size>        set maximum Java heap size

    -Xss<size>        set java thread stack size

    -Xprof            output cpu profiling data

    -Xfuture          enable strictest checks, anticipating future default

    -Xrs              reduce use of OS signals by Java/VM (see documentation)

    -Xcheck:jni       perform additional checks for JNI functions

    -Xshare:off       do not attempt to use shared class data

    -Xshare:auto      use shared class data if possible (default)

    -Xshare:on        require using shared class data, otherwise fail.

    -XshowSettings    show all settings and continue

    -XshowSettings:all

                      show all settings and continue

    -XshowSettings:vm show all vm related settings and continue

    -XshowSettings:properties

                      show all property settings and continue

    -XshowSettings:locale

                      show all locale related settings and continue

You probably need something like -Xmx2G -Xss256K

Or some variant. 

Jim

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[haolinl...@gmail.com]

As im running my project in intellij, it gives me the options to change heap size within the IDE, ive set the size for the heap to 2.5gb. However im still getting this issue

[Jim Idle]

Thread stack is different though. Try changing that. Could be s bug but I would think that someone would have found it by now. Maybe not

[haolinl...@gmail.com]

unfortunately i still that error anymore ideas?