--- a/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/CompilationWrapperTest.java	Sat Aug 05 03:05:06 2017 +0200
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.test/src/org/graalvm/compiler/hotspot/test/CompilationWrapperTest.java	Fri Aug 04 19:59:33 2017 -0700
@@ -82,6 +82,8 @@
                         "test");
     }
 
+    private static final boolean VERBOSE = Boolean.getBoolean(CompilationWrapperTest.class.getSimpleName() + ".verbose");
+
     private static void testHelper(List<String> extraVmArgs, String... mainClassAndArgs) throws IOException, InterruptedException {
         final File dumpPath = new File(CompilationWrapperTest.class.getSimpleName() + "_" + System.currentTimeMillis()).getAbsoluteFile();
         List<String> vmArgs = withoutDebuggerArguments(getVMCommandLine());
@@ -92,7 +94,9 @@
         vmArgs.addAll(extraVmArgs);
 
         Subprocess proc = SubprocessUtil.java(vmArgs, mainClassAndArgs);
-        System.out.println(proc);
+        if (VERBOSE) {
+            System.out.println(proc);
+        }
 
         String forcedCrashString = "Forced crash after compiling";
         String diagnosticOutputFilePrefix = "Graal diagnostic output saved in ";