--- old/src/share/vm/trace/trace.xml	2013-03-25 14:37:13.252253051 +0100
+++ new/src/share/vm/trace/trace.xml	2013-03-25 14:37:13.172253055 +0100
@@ -189,6 +189,13 @@
       <value type="ULONG" field="count" label="Total Count" />
     </event>
 
+    <event id="ObjectCountAfterGC" path="vm/gc/detailed/object_count_after_gc" is_instant="true" label="Object Count After GC">
+      <value type="ULONG" field="gcId"  label="GC ID" relation="GC_ID" />
+      <value type="CLASS" field="class" label="Class" />
+      <value type="LONG" field="count" label="Count" />
+      <value type="BYTES64" field="totalSize" label="Total Size" />
+    </event>
+
     <event id="PromotionFailed" path="vm/gc/detailed/promotion_failed" label="Promotion Failed" is_instant="true"
            description="Promotion of an object failed">
       <value type="ULONG" field="gcId" label="GC ID" relation="GC_ID"/>