--- old/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	2010-04-27 08:04:19.000000000 -0700
+++ new/src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp	2010-04-27 08:04:19.000000000 -0700
@@ -2079,7 +2079,12 @@
     // Let the size policy know we're done
     size_policy->major_collection_end(old_gen->used_in_bytes(), gc_cause);
 
-    if (UseAdaptiveSizePolicy) {
+    if (PSResizeByFreeRatioWithSystemGC &&
+        gc_cause == GCCause::_java_lang_system_gc) {
+      ParallelScavengeHeap* heap = (ParallelScavengeHeap*) Universe::heap();
+      heap->resize_by_free_ratio(true);
+
+    } else if (UseAdaptiveSizePolicy) {
       if (PrintAdaptiveSizePolicy) {
         gclog_or_tty->print("AdaptiveSizeStart: ");
         gclog_or_tty->stamp();
@@ -2132,6 +2137,9 @@
         gclog_or_tty->print_cr("AdaptiveSizeStop: collection: %d ",
                        heap->total_collections());
       }
+    } else {
+      ParallelScavengeHeap* heap = (ParallelScavengeHeap*) Universe::heap();
+      heap->resize_by_free_ratio(true);
     }
 
     if (UsePerfData) {