src/share/vm/gc/parallel/psParallelCompact.cpp

@@ -2101,29 +2101,38 @@
     }
 
     gc_tracer->report_gc_reference_stats(stats);
   }
 
-  GCTraceTime(Trace, gc) tm_m("Class Unloading", &_gc_timer);
-
   // This is the point where the entire marking should have completed.
   assert(cm->marking_stacks_empty(), "Marking should have completed");
 
+  {
+    GCTraceTime(Debug, gc) tm_m("Class Unloading", &_gc_timer);
+
   // Follow system dictionary roots and unload classes.
   bool purged_class = SystemDictionary::do_unloading(is_alive_closure());
 
   // Unload nmethods.
   CodeCache::do_unloading(is_alive_closure(), purged_class);
 
   // Prune dead klasses from subklass/sibling/implementor lists.
   Klass::clean_weak_klass_links(is_alive_closure());
+  }
 
+  {
+    GCTraceTime(Debug, gc) t("Scrub String Table", &_gc_timer);
   // Delete entries for dead interned strings.
   StringTable::unlink(is_alive_closure());
+  }
 
+  {
+    GCTraceTime(Debug, gc) t("Scrub Symbol Table", &_gc_timer);
   // Clean up unreferenced symbols in symbol table.
   SymbolTable::unlink();
+  }
+
   _gc_tracer.report_object_count_after_gc(is_alive_closure());
 }
 
 void PSParallelCompact::adjust_roots(ParCompactionManager* cm) {
   // Adjust the pointers to reflect the new locations