--- old/test/gc/g1/TestShrinkDefragmentedHeap.java	2014-11-13 20:37:11.202622845 +0400
+++ new/test/gc/g1/TestShrinkDefragmentedHeap.java	2014-11-13 20:37:11.134621725 +0400
@@ -59,6 +59,7 @@
                 "-XX:MaxHeapFreeRatio=11",
                 "-XX:+UseG1GC",
                 "-XX:G1HeapRegionSize=" + REGION_SIZE,
+                "-XX:-ExplicitGCInvokesConcurrent",
                 "-verbose:gc",
                 GCTest.class.getName()
         );