socket参数对性能的影响

今天发现线上一台机器的cilent端很慢，通过打点记录相关耗时：

写道

server:
13-03-26 14:30:12 [INFO] com.duitang.biz.blog.impl.MysqlBlogQueryServiceImpl - queryBlogDetail cost40 ms
13-03-26 14:30:12 [INFO] com.duitang.dboss.remote.nio.DbossServerHandler - dboss invoke cost 45 ms
13-03-26 14:30:12 [INFO] com.duitang.dboss.remote.nio.DbossServerHandler - dboss invoke cost 20 ms

client
13-03-26 14:30:12 [INFO] com.duitang.dboss.client.net.ServerCenter - servercenter invoke cost 86 ms
13-03-26 14:30:12 [INFO] com.duitang.dboss.client.net.ServerCenter - servercenter invoke cost 22 ms

 通过定位发现原因在于socket没有正确设置参数，应该加上：

    public void connect() throws DbossConnectionException {
        if (!isConnected()) {
            try {
                socket = new Socket();
                socket.setReuseAddress(true);
                socket.setKeepAlive(true);
                socket.setTcpNoDelay(true);
                socket.setSoLinger(true, 0);
                socket.connect(new InetSocketAddress(host, port), timeout);
                socket.setSoTimeout(timeout);
            } catch (IOException ex) {
                throw new DbossConnectionException(ex);
            }
        }
    }