src/share/vm/Xusage.txt

*** 6,16 ****
                        append to end of bootstrap class path
      -Xbootclasspath/p:<directories and zip/jar files separated by ;>
                        prepend in front of bootstrap class path
      -Xnoclassgc       disable class garbage collection
      -Xlog:<opts>      control JVM logging, use -Xlog:help for details
-     -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
--- 6,15 ----