diff -r 4b4ac8b31e3e -r fa21c9537e6e src/share/vm/trace/trace.xml
--- a/src/share/vm/trace/trace.xml	Thu Apr 10 15:11:37 2014 -0700
+++ b/src/share/vm/trace/trace.xml	Wed Mar 26 14:15:02 2014 +0100
@@ -185,7 +185,7 @@
     </event>
 
     <struct id="MetaspaceSizes">
-      <value type="BYTES64" field="capacity" label="Capacity" description="Total available memory to allocate in" />
+      <value type="BYTES64" field="committed" label="Committed" description="Committed memory for this space" />
       <value type="BYTES64" field="used" label="Used" description="Bytes allocated by objects in the space" />
       <value type="BYTES64" field="reserved" label="Reserved" description="Reserved memory for this space" />
     </struct>