String numThreadsProp = System.getProperty("test.concurrency.num.threads");
if (numThreadsProp != null) {
numThreads = Integer.valueOf(numThreadsProp);
}
setScheduler(new ConcurrentScheduler(newFixedThreadPool(numThreads, new ConcurrentTestRunnerThreadFactory())));
System.err.println(">>> ConcurrenTestRunner initialize with " + numThreads + " threads");
System.err.flush();
}