--- a/graal/com.oracle.graal.test/src/com/oracle/graal/test/GraalJUnitCore.java	Mon May 05 16:07:20 2014 +0200
+++ b/graal/com.oracle.graal.test/src/com/oracle/graal/test/GraalJUnitCore.java	Mon May 05 11:34:11 2014 +0200
@@ -48,11 +48,14 @@
         List<Class<?>> classes = new ArrayList<>();
         List<Failure> missingClasses = new ArrayList<>();
         boolean verbose = false;
+        boolean enableTiming = false;
         for (String each : args) {
             if (each.charAt(0) == '-') {
                 // command line arguments
                 if (each.contentEquals("-JUnitVerbose")) {
                     verbose = true;
+                } else if (each.contentEquals("-JUnitEnableTiming")) {
+                    enableTiming = true;
                 } else {
                     system.out().println("Unknown command line argument: " + each);
                 }
@@ -74,6 +77,9 @@
         } else {
             graalListener = new GraalVerboseTextListener(system);
         }
+        if (enableTiming) {
+            graalListener = new TimingDecorator(graalListener);
+        }
         junitCore.addListener(GraalTextListener.createRunListener(graalListener));
         Result result = junitCore.run(classes.toArray(new Class[0]));
         for (Failure each : missingClasses) {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.graal.test/src/com/oracle/graal/test/TimingDecorator.java	Mon May 05 11:34:11 2014 +0200
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2014, 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.graal.test;
+
+import org.junit.runner.*;
+
+/**
+ * Timing support for JUnit test runs.
+ */
+public class TimingDecorator extends GraalJUnitRunListenerDecorator {
+
+    private long startTime;
+    private long classStartTime;
+
+    public TimingDecorator(GraalJUnitRunListener l) {
+        super(l);
+    }
+
+    @Override
+    public void testClassStarted(Class<?> clazz) {
+        classStartTime = System.nanoTime();
+        super.testClassStarted(clazz);
+    }
+
+    @Override
+    public void testClassFinished(Class<?> clazz) {
+        long totalTime = System.nanoTime() - classStartTime;
+        super.testClassFinished(clazz);
+        getWriter().print(' ' + valueToString(totalTime));
+    }
+
+    @Override
+    public void testStarted(Description description) {
+        startTime = System.nanoTime();
+        super.testStarted(description);
+    }
+
+    @Override
+    public void testFinished(Description description) {
+        long totalTime = System.nanoTime() - startTime;
+        super.testFinished(description);
+        getWriter().print(" " + valueToString(totalTime));
+    }
+
+    private static String valueToString(long value) {
+        return String.format("%d.%d ms", value / 1000000, (value / 100000) % 10);
+    }
+
+}

--- a/mx/mx_graal.py	Mon May 05 16:07:20 2014 +0200
+++ b/mx/mx_graal.py	Mon May 05 11:34:11 2014 +0200
@@ -946,7 +946,7 @@
         f_testfile.close()
         harness(projectscp, vmArgs)
 
-def _unittest(args, annotations, prefixcp="", whitelist=None, verbose=False):
+def _unittest(args, annotations, prefixcp="", whitelist=None, verbose=False, enable_timing=False):
     mxdir = dirname(__file__)
     name = 'JUnitWrapper'
     javaSource = join(mxdir, name + '.java')
@@ -956,7 +956,11 @@
         (_, testfile) = tempfile.mkstemp(".testclasses", "graal")
         os.close(_)
     corecp = mx.classpath(['com.oracle.graal.test'])
-    coreArgs = ['-JUnitVerbose'] if verbose else []
+    coreArgs = []
+    if verbose:
+        coreArgs.append('-JUnitVerbose')
+    if enable_timing:
+        coreArgs.append('-JUnitEnableTiming')
 
     def harness(projectscp, vmArgs):
         if not exists(javaClass) or getmtime(javaClass) < getmtime(javaSource):
@@ -986,6 +990,7 @@
       --whitelist            run only testcases which are included
                              in the given whitelist
       --verbose              enable verbose JUnit output
+      --enable-timing        enable JUnit test timing
 
     To avoid conflicts with VM options '--' can be used as delimiter.
 
@@ -1024,6 +1029,7 @@
         )
     parser.add_argument('--whitelist', help='run testcases specified in whitelist only', metavar='<path>')
     parser.add_argument('--verbose', help='enable verbose JUnit output', action='store_true')
+    parser.add_argument('--enable-timing', help='enable JUnit test timing', action='store_true')
 
     ut_args = []
     delimiter = False
@@ -1050,7 +1056,7 @@
         except IOError:
             mx.log('warning: could not read whitelist: ' + parsed_args.whitelist)
 
-    _unittest(args, ['@Test', '@Parameters'], whitelist=whitelist, verbose=parsed_args.verbose)
+    _unittest(args, ['@Test', '@Parameters'], whitelist=whitelist, verbose=parsed_args.verbose, enable_timing=parsed_args.enable_timing)
 
 def shortunittest(args):
     """alias for 'unittest --whitelist test/whitelist_shortunittest.txt'{0}"""