static void oneRun(BlockingQueue<Runnable> q, int nThreads, int iters, boolean print) throws Exception { ThreadPoolExecutor pool = new ThreadPoolExecutor(nThreads + 1, Integer.MAX_VALUE, 1L, TimeUnit.SECONDS, q); CountDownLatch done = new CountDownLatch(iters); remaining.set(nThreads - 1); pool.prestartAllCoreThreads(); Task t = new Task(pool, done); long start = System.nanoTime(); pool.execute(t); done.await(); long time = System.nanoTime() - start; if (print) System.out.println("\t: " + LoopHelpers.rightJustify(time / iters) + " ns per task"); q.clear(); Thread.sleep(100); pool.shutdown(); Thread.sleep(100); pool.shutdownNow(); }