--- jsr166/src/test/loops/FutileTimedTryLockLoops.java	2014/12/31 17:00:58	1.2
+++ jsr166/src/test/loops/FutileTimedTryLockLoops.java	2015/01/26 17:40:39	1.4
@@ -51,7 +51,7 @@ public final class FutileTimedTryLockLoo
                     continue nextArg;
                 }
             }
-            throw new Error("Usage: FutileTimedTryLockLoops minThreads=n maxThreads=n Threads=n nanos=n iters=n");
+            throw new Error("Usage: FutileTimedTryLockLoops minThreads=n maxThreads=n threads=n nanos=n iters=n");
         }
         final ExecutorService pool = Executors.newCachedThreadPool();
         final ReentrantLock lock = new ReentrantLock();
@@ -59,6 +59,10 @@ public final class FutileTimedTryLockLoo
         lock.lock();
 
         for (int i = minThreads; i <= maxThreads; i += (i+1) >>> 1) {
+            // warmup
+            if (i == minThreads)
+                pool.invokeAll(Collections.nCopies(i, task));
+
             long startTime = System.nanoTime();
             pool.invokeAll(Collections.nCopies(i, task));
             long elapsed = System.nanoTime() - startTime;