开这个线程池的好处在于什么呢？

我想问一下 https://github.com/alibaba/Sentinel/blob/master/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/SimpleHttpCommandCenter.java#L106

上面这个类中run方法行如下：

@Override public void run() { boolean success = false; ServerSocket serverSocket = getServerSocketFromBasePort(port);

            if (serverSocket != null) {
                CommandCenterLog.info("[CommandCenter] Begin listening at port " + serverSocket.getLocalPort());
                socketReference = serverSocket;
                executor.submit(new ServerThread(serverSocket));
                success = true;
                port = serverSocket.getLocalPort();
            } else {
                CommandCenterLog.info("[CommandCenter] chooses port fail, http command center will not work");
            }

            if (!success) {
                port = PORT_UNINITIALIZED;
            }

            TransportConfig.setRuntimePort(port);
            executor.shutdown();
        }

其中 executor.submit(new ServerThread(serverSocket)); 这段代码是不是用线程池和直接开一个线程一样呢？开线程池还需要其他的开销...

并且 ServerThread 中的代码如下：

    @Override
    public void run() {
        while (true) {	//	一直循环,	单线程不断接收数据
            Socket socket = null;
            try {
            	//	serverSocket阻塞
                socket = this.serverSocket.accept();
                //	设置超时时间
                setSocketSoTimeout(socket);	
                //	每次有新的socket套接字则包装成HttpEventTask, 然后进行业务多线程提交并发执行任务
                HttpEventTask eventTask = new HttpEventTask(socket);
                bizExecutor.submit(eventTask);	//	异步提交执行任务
            } catch (Exception e) {
                CommandCenterLog.info("Server error", e);
                if (socket != null) {
                    try {
                        socket.close();
                    } catch (Exception e1) {
                        CommandCenterLog.info("Error when closing an opened socket", e1);
                    }
                }
                try {
                    // In case of infinite log.
                    Thread.sleep(10);
                } catch (InterruptedException e1) {
                    // Indicates the task should stop.
                    break;
                }
            }
        }
    }

也是就是这个线程一直会阻塞... 所以，我想问的就是 开这个线程池的好处在于什么呢？

原提问者GitHub用户qiaolin-li