public void createThreads() {
		this.threads = new ArrayList<Thread>();
		Runnable runnable = new Runnable() {
			@Override
			public void run() {
				long time_ms = instance.processSearch();
				time_ms = System.currentTimeMillis() - time_ms;
				timesInMs.add(time_ms);
			}
		};
		for (int index = 0; index < nbrOfThreads; index++) { //create some Threads
			threads.add(new Thread(runnable));
		}
	}