for (int i = 0; i < reps; i++) {
      executor.execute(countingRunnable);
    }
    return countingRunnable.integer.get();
  }

  @Benchmark
  int timeContendedExecute(int reps) {
    Executor executor = this.executor;
    for (Thread thread : threads) {
      if (!thread.isAlive()) {
        thread.start();
      }
    }