issue 10237
Increase the default timout of the barries used in the barrier tests.  This should solve unexpected timeouts on some machines.
diff --git a/Lib/test/lock_tests.py b/Lib/test/lock_tests.py
index f256a80..9fd0fe7 100644
--- a/Lib/test/lock_tests.py
+++ b/Lib/test/lock_tests.py
@@ -606,7 +606,7 @@
     N = 5
 
     def setUp(self):
-        self.barrier = self.barriertype(self.N, timeout=0.1)
+        self.barrier = self.barriertype(self.N, timeout=0.5)
     def tearDown(self):
         self.barrier.abort()