jpayne@68:     -Xmixed           mixed mode execution (default)
jpayne@68:     -Xint             interpreted mode execution only
jpayne@68:     -Xbootclasspath:<directories and zip/jar files separated by :>
jpayne@68:                       set search path for bootstrap classes and resources
jpayne@68:     -Xbootclasspath/a:<directories and zip/jar files separated by :>
jpayne@68:                       append to end of bootstrap class path
jpayne@68:     -Xbootclasspath/p:<directories and zip/jar files separated by :>
jpayne@68:                       prepend in front of bootstrap class path
jpayne@68:     -Xnoclassgc       disable class garbage collection
jpayne@68:     -Xlog:<opts>      control JVM logging, use -Xlog:help for details
jpayne@68:     -Xbatch           disable background compilation
jpayne@68:     -Xms<size>        set initial Java heap size
jpayne@68:     -Xmx<size>        set maximum Java heap size
jpayne@68:     -Xss<size>        set java thread stack size
jpayne@68:     -Xfuture          enable strictest checks, anticipating future default
jpayne@68:     -Xrs              reduce use of OS signals by Java/VM (see documentation)
jpayne@68:     -Xcheck:jni       perform additional checks for JNI functions
jpayne@68:     -Xshare:off	      do not attempt to use shared class data
jpayne@68:     -Xshare:auto      use shared class data if possible (default)
jpayne@68:     -Xshare:on	      require using shared class data, otherwise fail.
jpayne@68: 
jpayne@68: The -X options are non-standard and subject to change without notice.