--- old/test/serviceability/tmtools/jstat/GcCauseTest02.java	2016-11-16 21:46:14.068572267 +0300
+++ new/test/serviceability/tmtools/jstat/GcCauseTest02.java	2016-11-16 21:46:13.960572271 +0300
@@ -27,6 +27,7 @@
  *          Test scenario:
  *          tests forces debuggee application eat ~70% of heap and runs jstat.
  *          jstat should show that ~70% of heap (OC/OU ~= 70%).
+ * @requires vm.opt.ExplicitGCInvokesConcurrent != true
  * @modules java.base/jdk.internal.misc
  * @library /test/lib
  * @library ../share
--- old/test/serviceability/tmtools/jstat/GcTest02.java	2016-11-16 21:46:14.460572252 +0300
+++ new/test/serviceability/tmtools/jstat/GcTest02.java	2016-11-16 21:46:14.352572256 +0300
@@ -28,6 +28,7 @@
  *          Test scenario:
  *          tests forces debuggee application eat ~70% of heap and runs jstat.
  *          jstat should show that ~70% of heap is utilized (OC/OU ~= 70%).
+ * @requires vm.opt.ExplicitGCInvokesConcurrent != true
  * @modules java.base/jdk.internal.misc
  * @library /test/lib
  * @library ../share