switchPortStatsUpdated = new LinkedBlockingQueue<Long>(INITIAL_SIZE);
switchSupportsVendorExtStats = new ConcurrentHashMap<Long, Boolean>(INITIAL_SIZE);
txRates = new HashMap<Long, Map<Short, TxRates>>(INITIAL_SIZE);
switchPortStatsUpdated = new LinkedBlockingQueue<Long>(INITIAL_SIZE);
switchSupportsVendorExtStats = new ConcurrentHashMap<Long, Boolean>(INITIAL_SIZE);
txRates = new HashMap<Long, Map<Short, TxRates>>(INITIAL_SIZE);