请教：WCF速度似乎比Remoting慢

两段极为相似的代码，主要想看看过输与序列化过程两者的用时差异，结果10000次的调用，wcf用了11秒多，remoting用了5秒不到！
这是测试的源代码 

remoting的服务端

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的服务端

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;
    }
}

代码可以理解为一样的，以下的客户端，两客户端也可以视为一样的过程
wcf客户端

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客户端

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();
}