--- old/src/share/vm/Xusage.txt	2015-11-19 15:35:00.802129487 +0100
+++ new/src/share/vm/Xusage.txt	2015-11-19 15:35:00.710129490 +0100
@@ -8,7 +8,6 @@
                       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