請教：WCF速度似乎比Remoting慢

兩段極為相似的代碼，主要想看看過輸與序列化過程兩者的用時差異，結果10000次的調用，WCF用了11秒多，remoting用了5秒不到！
這是測試的源代碼 

Remoting的服務端

public class RemotCalc : MarshalByRefObject, ICalc
{
    public CalcInfo Calc(CalcInfo pInfo)
    {
        CalcInfo info = new CalcInfo();
        info.Method = string.Format("back_{0}", pInfo.Method);
        info.Para1 = pInfo.Para1;
        info.Para2 = pInfo.Para2;
        info.Result = pInfo.Result + 999;
        return info;
    }
}

WCF的服務端

public class WcfCalc : Srv.Interface.ICalc
{
    public CalcInfo Calc(CalcInfo pInfo)
    {
        CalcInfo info = new CalcInfo();
        info.Method = string.Format("back_{0}", pInfo.Method);
        info.Para1 = pInfo.Para1;
        info.Para2 = pInfo.Para2;
        info.Result = pInfo.Result + 999;
        return info;
    }
}

代碼可以理解為一樣的，以下的客戶端，兩客戶端也可以視為一樣的過程
WCF客戶端

static void Main(string[] args)
{
    using(ChannelFactory<Srv.Interface.ICalc> factory = new ChannelFactory<Srv.Interface.ICalc>("Calc2"))
    {
        Srv.Interface.ICalc calc = factory.CreateChannel();
        CalcInfo info = new CalcInfo();
        info.Method = "test";
        Console.WriteLine("press any key to run...");
        Console.ReadLine();
        int max = 10000;
        Console.WriteLine("it's run...");
        DateTime start = DateTime.Now;
        for (int i = 0; i < max; i++)
        {
            CalcInfo res = calc.Calc(info);
        }
        TimeSpan sp = DateTime.Now - start;
        Console.WriteLine("run {0} times use {1}ms ", max, sp.TotalMilliseconds);
        Console.ReadLine();
    }
}

Remoting客戶端

static void Main(string[] args)
{
    ChannelServices.RegisterChannel(new TcpClientChannel(), false);
    ICalc remoteobj = (ICalc)Activator.GetObject(typeof(ICalc),
    "tcp://localhost:6666/Calc");
    CalcInfo info = new CalcInfo();
    info.Method = "test";
    Console.WriteLine("press any key to run...");
    Console.ReadLine();
    int max = 10000;
    DateTime start = DateTime.Now;
    for (int i = 0; i < max; i++)
    {
        CalcInfo res = remoteobj.Calc(info);
    }
    TimeSpan sp = DateTime.Now - start;
    Console.WriteLine("run {0} times use {1}ms ", max, sp.TotalMilliseconds);
    Console.ReadLine();
}