--- old/test/java/util/concurrent/ConcurrentHashMap/ConcurrentAssociateTest.java	2015-07-20 14:08:23.839018642 -0700
+++ new/test/java/util/concurrent/ConcurrentHashMap/ConcurrentAssociateTest.java	2015-07-20 14:08:23.679018638 -0700
@@ -120,7 +120,8 @@
             }
         };
 
-        int ps = Runtime.getRuntime().availableProcessors();
+        // Bound concurrency to avoid degenerate performance
+        int ps = Math.min(Runtime.getRuntime().availableProcessors(), 32);
         Stream<CompletableFuture> runners = IntStream.range(0, ps)
                 .mapToObj(i -> sr.get())
                 .map(CompletableFuture::runAsync);