--- a/runtest.py
+++ b/runtest.py
@@ -92,8 +92,10 @@ try:
     import threading
     try:                        # python3
         from queue import Queue
+        PY3=True
     except ImportError as e:    # python2
         from Queue import Queue
+        PY3=False
     threading_ok = True
 except ImportError:
     print("Can't import threading or queue")
@@ -764,10 +766,13 @@ os.environ["python_executable"] = python
 # but time.time() does a better job on Linux systems, so let that be
 # the non-Windows default.
 
-if sys.platform == 'win32':
-    time_func = time.clock
-else:
-    time_func = time.time
+try:
+    time_func = time.perf_counter
+except AttributeError:
+    if sys.platform == 'win32':
+        time_func = time.clock
+    else:
+        time_func = time.time
 
 if print_times:
     print_time_func = lambda fmt, time: sys.stdout.write(fmt % time)